******************************************************************************************
SOLAR SYSTEM
******************************************************************************************
==========================================================================================
Proposal Number: 08100480
Proposal Title: X-Ray Observations of Jupiter in Support of the New Horizons
Flyby
PI: G. Gladstone
Subject Category: SOLAR SYSTEM
Abstract: On February 28th 2007, the New Horizons (NH) spacecraft will flyby
Jupiter for a gravity assist to Pluto. Closest approach (C/A) is 32 Jupiter
radii, but the NH instruments will conduct intensive studies from C/A-52d to
C/A+100d. Important new studies of auroral and magnetospheric physics are planned
that may be well-supported by Chandra observations. Chandra support of the
Cassini flyby of Jupiter in 2000 led to a major revision of our understanding of
Jupiter's x-ray aurora. We propose 108ks of Chandra time to support three planned
NH investigations; a time-variability study during approach, a multi-spectral
morphology study near C/A, and a magnetotail dynamics study as NH heads to Pluto.
In addition, we request 72ks of XMM-Newton time to investigate spectral
differences at low energy.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
Jupiter ACIS-S NONE 18.0000
Jupiter ACIS-S NONE 18.0000
Jupiter ACIS-S NONE 18.0000
Jupiter ACIS-S NONE 18.0000
Jupiter ACIS-S NONE 18.0000
Jupiter ACIS-S NONE 18.0000
==========================================================================================
Proposal Number: 08100802
Proposal Title: Solar wind charge exchange induced X-rays at Venus during the
Messenger flyby
PI: Konrad Dennerl
Subject Category: SOLAR SYSTEM
Abstract: The interaction of the solar wind with planetary atmospheres has
important consequences for their evolution. This process can be studied
particularly well at Venus, because there the solar wind flow is not attenuated
by a planetary magnetic field and interacts directly with its atmosphere. The
discovery of cometary X-ray emission has demonstrated that charge exchange
induced X-rays of heavy solar wind ions can be used as an efficient tracer of low
density gas, offering a unique window on this interaction, with many diagnostic
qualities. We propose to utilize the exceptional opportunity provided by the
Messenger flyby in June 2007 and the presence of Venus Express for combining
local measurements with the global view provided by Chandra for a pioneering
X-ray study of this interaction.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
Venus ACIS-I NONE 80.0000
******************************************************************************************
NORMAL STARS AND WD
******************************************************************************************
==========================================================================================
Proposal Number: 08200053
Proposal Title: High Resolution Studies of Pre-Main Sequence Stars in Orion
PI: Claude Canizares
Subject Category: STARS AND WD
Abstract: The Trapezium Cluster at the center of the Orion Nebula Cluster (ONC)
is one of the youngest and closest (440 pc) star-forming regions. Many of the
properties we know today are derived from X-ray signatures. Here we study highly
resolved X-ray spectra of a large ensemble of very young and chemically similar
PMS stars in terms of their magnetic and accretion properties. This is the second
of three installments of our Orion HETG program, the first one was for 100 ks in
AO6, a third one for 150 ks will follow in AO9. In these pointings we add more
counts to our current sample of Orion stars, which so far include 4 spectra of
massive Trapezium stars and 2 late-type PMS stars. A series of 6 pointings will
result in at least 6 additional PMS spectra and higher quality Trapezium
spectra.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
05:35:16.10 -05:21:09.50 Orion Trapezium Clus ACIS-S HETG 25.0000
05:35:16.80 -05:24:04.20 Orion Trapezium Clus ACIS-S HETG 25.0000
05:35:17.20 -05:23:16.40 Orion Trapezium Clus ACIS-S HETG 25.0000
05:35:17.20 -05:21:31.70 Orion Trapezium Clus ACIS-S HETG 25.0000
05:35:18.00 -05:22:05.10 Orion Trapezium Clus ACIS-S HETG 25.0000
05:35:18.80 -05:22:45.90 Orion Trapezium Clus ACIS-S HETG 25.0000
==========================================================================================
Proposal Number: 08200106
Proposal Title: THE FASTEST CORONA IN TOWN
PI: DAVID GARCIA-ALVAREZ
Subject Category: STARS AND WD
Abstract: The young (12 Myr) Beta Pic moving group member HD 199143 (F8V) has the
largest v sini of any known solar-like star accessible to Chandra gratings and
represents a unique opportunity to study surface magnetic and coronal structure
on a young solar analogue. Our proposed HETG+ACIS-S will probe the scale height
of the hot magnetised outer atmosphere coronal through Doppler rotational line
broadening. Rotationally-induced Doppler shifts will probe the presence of
dominant coronal features at lower latitudes. Provide plasma temperature
structure, density and chemical composition. The results will be used to
complement and test 3-D coronal models deduced from extrapolation of photospheric
magnetic fields from a contemporaneous Zeeman-Doppler imaging study.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
20:55:47.70 -17:06:51.00 HD 199143 ACIS-S HETG 135.0000
==========================================================================================
Proposal Number: 08200110
Proposal Title: Burn Out or Fade Away? Probing the X-ray Death of Intermediate
Mass Stars
PI: Jeremy Drake
Subject Category: STARS AND WD
Abstract: We propose HRC-I snapshots of the very young early A-type stars HR4796A
(8 Myr) and beta Pic (~20 Myr) to search for remnant X-ray activity from the
Herbig Ae phase. Both stars have dusty disks and are in the epoch of planet
formation. They are the youngest A-type main-sequence stars for which accurate
ages have been determined, are devoid of stellar companions and are the best
available candidates to probe the mystery of how early A stars decline in X-ray
luminosity at least 100,000 fold from 10^31 erg/s to L_X < 10^26 erg/s in a few
million years. The results will be important for understanding the formation of
stars and planets at intermediate stellar masses, and the evolution of their high
energy environments and magnetic activity.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:36:01.00 -39:52:10.20 HR4796 HRC-I NONE 20.0000
==========================================================================================
Proposal Number: 08200158
Proposal Title: X-Ray Emission from Low-Mass Protostars in Small Dark Clouds
PI: Theodore Simon
Subject Category: STARS AND WD
Abstract: A handful of Class I protostars have been detected in X rays, but no
firmly established Class 0 object has ever been detected as an X ray source. I am
proposing to obtain 60 ks pointings with the ACIS-I camera of four small dark
cloud regions, each of which is known to harbor high-velocity molecular outflows,
long chains of HH emission knots, and low-luminosity Class 0 IRAS sources. The
goal is to determine whether the X ray and other physical properties of these
objects are different from those of embedded protostars that form in much more
massive clouds. Because of their lower density and mass, these small clouds may
be more transparent to X rays and hence more easily probed than a dense cloud
like Orion.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
22:38:47.00 +75:11:30.00 L1251B-VLA3 ACIS-I NONE 60.0000
==========================================================================================
Proposal Number: 08200171
Proposal Title: A search for cool gas in the X-ray emitting wind of O-stars
PI: Ton Raassen
Subject Category: STARS AND WD
Abstract: Pollock and Raassen developed a new paradigm for X-ray emission in
O-stars. It implies that the X-ray emission originates from proton-excitations
far out in the wind in an area with non-equilibrium plasma, while generally is
assumed that the X-rays are emitted in hot plasma in equilibrium near the stellar
surface. We use LETGS spectra to search for this cool gas in O-star wind
detectable by CV, OVI, NeVIII, MgVIII-MgX, SiIX-SiXII, SXII, SXIII, FeXVI above
37 Angstrom (the cut-off of XMM-Newton). Our first goal is to identify these
cooler (low-ionized) ions upto 80 Angstrom as indication for non-equilibrium
plasma. No O-stars have been studied extensively thusfar above 37 Angstrom. Delta
Ori is chosen, because of its low interstellar absorption.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
05:32:00.40 -00:17:56.70 delta Ori HD 36486 HRC-S LETG 100.0000
==========================================================================================
Proposal Number: 08200188
Proposal Title: Resolving the X-ray Emission from Massive Protostars in the NGC
2071 Cluster Core
PI: Stephen Skinner
Subject Category: STARS AND WD
Abstract: One of the most spectacular star-forming regions in Orion is the young
infrared cluster in NGC 2071. Its importance derives from the presence of several
massive protostars in a dense central subgroup known as NGC 2071-IR, which are
some of the closest such objects known. A recent XMM-Newton observation resulted
in the surprising detection of hard X-ray emission accompanied by a strong
fluorescent Fe I line from the central group of massive protostars. The emission
is likely associated with the massive embedded protostar IRS-1, which drives a
powerful bipolar outflow. We propose a follow-up Chandra observation that will
provide the high angular resolution needed to reliably identify IR counterparts
in the crowded cluster core and search for signatures of shock-related emission.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
05:47:04.80 +00:21:42.80 NGC2071-IRS1 ACIS-I NONE 70.0000
==========================================================================================
Proposal Number: 08200206
Proposal Title: Evolution of Magnetic Activity and the Accretion History in
Taurus-Auriga Multiple Systems
PI: Manuel Guedel
Subject Category: STARS AND WD
Abstract: We request Chandra observing time to survey pre-main sequence binary
and multiple systems in the Taurus-Auriga Molecular Cloud (TMC) that can be
studied exclusively by Chandra. These systems show separations between components
in the range of ~1-5". TMC contains an anomalously high fraction of binaries and
is therefore a testbed for binary formation theories. X-ray studies provide
important diagnostics related to accretion processes and evolution of the TMC
sample. This Chandra project will be an integral part of a large, deep survey of
the TMC that has been conducted with the Spitzer Space Telescope, XMM-Newton, and
optical and near-infrared ground-based telescopes.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
04:03:49.20 +26:10:54.00 HBC 358/59 ACIS-S NONE 10.0000
04:33:54.70 +26:13:28.00 IT Tau ACIS-S NONE 5.0000
==========================================================================================
Proposal Number: 08200213
Proposal Title: Is W40 the Richest Nearby Young Stellar Cluster after Orion?
PI: Konstantin Getman
Subject Category: STARS AND WD
Abstract: There is now recent evidence that the poorly studied HII region W40 is
one of the richest young stellar clusters near the Sun. We propose a 40ks ACIS-I
Chandra exposure to study the underlying stellar population of W40. We will
detect the X-ray brighter, higher-mass individual members of the region down to
0.4Msun and, through XLF analysis, establish the population of undetected
lower-mass objects. Combining Chandra data with our deep JHK/H2 images obtained
at the UKIRT telescope on Mauna Kea will allow us information about the IMF of
cluster members, their protoplanetary disks, and protostars undergoing outflow
events. Likely being the richest star forming cloud within 600 pc after Orion,
W40 has the potential to offer us a different window to the formation processes
of stars in clusters.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
18:31:23.90 -02:05:29.50 W40 ACIS-I NONE 40.0000
==========================================================================================
Proposal Number: 08200263
Proposal Title: Hot Gas in the Eskimo Nebula: Shocked Fast Stellar Wind or Fast
Collimated Outflows?
PI: Martin Guerrero
Subject Category: STARS AND WD
Abstract: It is commonly accepted that fast stellar winds and fast collimated
outflows are responsible for the shaping of planetary nebulae (PNe). Both fast
stellar winds and collimated outflows can produce shock-heated gas that emits
diffuse X-rays; thus, X-ray observations of PNe can be used to gain insight into
the formation and shaping of PNe. Few PNe, however, show detectable diffuse X-ray
emission and in only two cases this can be attributed to fast collimated
outflows. Our XMM-Newton observations of the Eskimo Nebula reveal diffuse X-ray
emission that may originate from both its fast stellar wind and from its bipolar
outflows. We request Chandra ACIS observations to resolve the X-ray emission from
the Eskimo Nebula and to determine its origin.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
07:29:10.80 +20:54:42.50 NGC 2392 ACIS-S NONE 60.0000
==========================================================================================
Proposal Number: 08200400
Proposal Title: Hot gas and cool dust around B[e] Supergiants
PI: Joel Kastner
Subject Category: STARS AND WD
Abstract: We propose a joint Chandra/ACIS and Spitzer/IRS survey of plasma and
thermal dust emission from CI Cam and five other galactic B[e] supergiant systems
that are bright mid-IR sources. The results will test the hypothesis that many
such stars harbor quiescent, "CI Cam-like" X-ray sources, and that these sources
may be intimately related to the presence of binary companions as well as to the
dusty disks recently detected in IRS spectoscopy of B[e] supergiants. ACIS
spectrscopy will establish the presence and strength of any Fe fluorescence line
emission in these systems. In parallel, the proposed joint Spitzer IRS
observations will provide the means to ascertain the origin and evolution of
dusty disks around B[e] supergiants.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
10:15:21.90 -57:51:42.70 CPD -57 9243 ACIS-I NONE 20.0000
16:07:02.00 -53:03:45.80 CPD -52 9243 ACIS-I NONE 20.0000
17:15:15.30 -40:20:06.70 HD 327083 ACIS-I NONE 20.0000
==========================================================================================
Proposal Number: 08200445
Proposal Title: The shock physics at the colliding winds in WR 146
PI: Julian Pittard
Subject Category: STARS AND WD
Abstract: WR+O star binary systems produce a region of hot shocked plasma where
the stellar winds collide - the wind-collision region (WCR). The hot plasma
produces thermal X-ray emission, while synchrotron radio emission arises from
relativistic electrons believed to be accelerated at the shocks bounding the WCR.
Such systems provide an excellent laboratory for the study of shock
thermalization and particle acceleration, with the same physical processes as
observed in SNRs, but at much higher mass, photon, and magnetic energy densities.
We propose an X-ray observation of WR146 to search for signs of weak shock
heating and shock modification, and to determine the non-thermal particle
distribution, providing insight into the nature of particle acceleration and its
feedback on the shock structure.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
20:35:47.10 +41:22:44.70 WR146 ACIS-I NONE 20.0000
==========================================================================================
Proposal Number: 08200495
Proposal Title: Evolution of Accretion and X-Rays in Lynds 1228
PI: Manuel Guedel
Subject Category: STARS AND WD
Abstract: We propose to observe two centers of low-mass star formation in the
Lynds 1228 dark cloud. L1228 is one of the most active star-formation regions
within the Cepheus giant molecular cloud complex. Recent Spitzer Space Telescope
observations have shown a wide variety of pre-main sequence stars at various
stages of evolution, ranging from embedded, jet+outflow driving protostars to
classical and weak-lined T Tauri stars with very different circumstellar-disk
characteristics. We aim at studying the influence of accretion and disk
parameters on X-ray production in a region with characteristics intermediate
between the Taurus and the Orion star-forming regions.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
20:57:11.70 +77:35:47.90 L1228 core ACIS-I NONE 40.0000
==========================================================================================
Proposal Number: 08200531
Proposal Title: The Full Picture of Magnetic Activity in Ultracool Dwarfs:
Simultaneous Observations of Coronae and Chromospheres
PI: Edo Berger
Subject Category: STARS AND WD
Abstract: Only a decade ago, theoretical expectation was that magnetic activity
would disappaer beyond M5. While we now know that stellar activity exists in some
late-M dwarfs, only a few such objects have been observed in the X-rays. Thus,
the ubiquity and physics of coronae and magnetic fields remain unclear. This is
exacerbated by the shift to flaring emission, whose properties are poorly
characterized due to the lack of simultaneous observations. It is therefore time
to produce a complete picture of the coronae and chromospheres in ultracool
dwarfs, and directly implicate magnetic fields in this activity. Here we propose
to delineate the underlying physics of the magnetic activity with fully
simultaneous observations in the X-ray, radio, and H-alpha bands.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
15:01:08.20 +22:50:02.00 TVLM513-46546 ACIS-S NONE 30.0000
16:55:35.40 -08:23:42.30 VB8 ACIS-S NONE 30.0000
19:16:57.70 +05:09:00.00 VB10 ACIS-S NONE 30.0000
==========================================================================================
Proposal Number: 08200549
Proposal Title: Understanding X-ray super-saturation
PI: Gaitee Hussain
Subject Category: STARS AND WD
Abstract: X-ray emission is commonly used to measure magnetic activity in cool
stars. While X-ray levels and magnetic activity levels rise with stellar rotation
rate, X-ray luminosities actually decline or "super-saturate" in the most rapidly
rotating stars. Conflicting theories have been used to explain this: e.g.,
magnetic dynamos are inhibited, surface fields are more confined or their heating
is less efficient, or emission is reduced due to centrifugal stripping of the
outer corona. We will test different explanations of super-saturation through a
multi-wavelength study of the star, AP 139. By comparing rotational modulation in
its X-ray lightcurves and temperatures with maps of surface activity we can learn
if and how this phenomenon is related to changes in the star's surface fields.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
03:22:06.00 +47:34:07.50 AP 139 ACIS-S NONE 69.0000
==========================================================================================
Proposal Number: 08200589
Proposal Title: X-ray spectral diagnostics of accretion processes in pre-main
sequence stars: TWA14
PI: Paola Testa
Subject Category: STARS AND WD
Abstract: We propose to obtain a 160 ks Chandra LETG+ACIS-S spectrum of TWA14,
one of the very few accreting pre-main sequence stars easily accessible to
high-resolution spectroscopy, being in the nearby TW Hydrae Association and X-ray
bright. This observation will provide unique X-ray diagnostics of accretion and
grain depletion of accreting gas, and will determine the role of accretion and
star-disk interaction in the high energy emission of classical T Tauri stars.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
11:13:26.20 -45:23:42.70 TWA14 ACIS-S LETG 160.0000
==========================================================================================
Proposal Number: 08200625
Proposal Title: The Fainting of Alpha Cen A
PI: Thomas Ayres
Subject Category: STARS AND WD
Abstract: Alpha Centauri (G2V+K1V) is the nearest system of solar-like stars; the
primary has long been regarded a solar twin. Historical X-ray missions have been
able to separate the coronal point sources (14" apart in Y2000), although the
orbit now is closing rapidly and beyond 2006 can only be resolved by Chandra. The
35 year X-ray record has revealed striking long term changes in the Alpha Cen
coronae, likely related to analogs of the still mysterious solar sunspot cycle.
Recent work suggests that the K star is rising out of a cycle minimum, while the
G star has experienced a startling, unprecedented plunge in its X-ray luminosity
that calls into question our understanding of stellar dynamos. A deep LETGS
spectrum, and two short HRC-I snapshots, will build on this remarkable coronal
narrative.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
14:39:32.30 -60:50:02.00 Alpha Centauri HRC-I NONE 5.0000
14:39:32.30 -60:50:02.00 Alpha Centauri HRC-I NONE 5.0000
14:39:32.30 -60:50:02.00 Alpha Centauri HRC-S LETG 120.0000
==========================================================================================
Proposal Number: 08200704
Proposal Title: Accretion or a Corona? Definitive Observations of the Young
Accreting Star TW Hydrae
PI: Nancy Brickhouse
Subject Category: STARS AND WD
Abstract: We propose a 500 ks observation of the prototypical accreting young
star TW Hydrae to determine whether the X-ray emission is from a hot corona or an
accretion shock. In the short archival spectrum, O VII and Ne IX forbidden to
intercombination lines signal either extremely high densities that must be
associated with a shock, or photoexcitation by UV continuum emission. The
definitive measurement for the density is the analogous Mg XI line ratio. We will
also measure velocity shifts and line broadening, search for rotational
modulation, and determine elemental abundances using standard emission measure
distribution techniques. This deep spectrum will probe the density and structure
of the magnetic regions associated with the accretion process during star
formation.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
11:01:52.00 -34:42:16.90 TW Hya ACIS-S HETG 20.0000
11:01:52.00 -34:42:16.90 TW Hya ACIS-S HETG 160.0000
11:01:52.00 -34:42:16.90 TW Hya ACIS-S HETG 160.0000
11:01:52.00 -34:42:16.90 TW Hya ACIS-S HETG 160.0000
==========================================================================================
Proposal Number: 08200733
Proposal Title: Hot Gas and Thermal Conduction in Planetary Nebulae
PI: Robert Gruendl
Subject Category: STARS AND WD
Abstract: Planetary nebulae (PNe) consist of the material ejected by stars with
masses less than 8-10 Msun near the end of their evolution. Shock-heated gas
fills the central cavity of PNe and should be detectable in X-rays. The few
existing detections of diffuse X-ray emission from PNe appear to suggest that the
X-ray luminosity and plasma temperature decrease as a PN evolves. We have used
FUSE detections of nebular OVI emission or absorption to identify 3x10E5 K gas
from the interface between a hot PN interior and its nebular shell to identify
PNe most likely to possess X-ray-emitting gas. We request Chandra observations of
two such PNe. These PNe have intermediate ages and can be used to study the role
of thermal conduction in PNe as well as better establish how the hot gas evolves
with time.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
05:27:28.00 -12:41:50.00 IC 418 ACIS-S NONE 50.0000
19:44:48.00 +50:31:30.00 NGC 6826 ACIS-S NONE 50.0000
==========================================================================================
Proposal Number: 08200759
Proposal Title: MAGNETIC FIELDS ON 'ALIEN DWARFS' - II : CORONAL ACTIVITY IN THE
ARCTURUS MOVING GROUP
PI: Alexander Brown
Subject Category: STARS AND WD
Abstract: The Arcturus Moving Group (AMG) is very likely a remnant of the merger
of a dwarf galaxy with the Milky Way Galaxy in the distant past. This
kinematically distinct group has members located very close to the Sun, allowing
study of coronal activity on very old stars that would typically not be possible.
We detected 2 AMG dwarfs with ACIS-S in Cycle 7 with L_x somewhat less than the
minimum solar L_x. We propose to observe three additional AMG dwarf members with
the aim of determining their X-ray luminosities, coronal temperatures, and the
effects of low metallicity on coronal spectra. Our targets have metallicities
between 0.4 and 0.04 solar, spectral types F9 - K0, and are at distances less
than 30 pc from the Sun.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
10:28:03.90 +48:46:59.40 HD90508 ACIS-S NONE 25.0000
16:13:47.80 -57:34:23.70 HD145417 ACIS-S NONE 35.0000
==========================================================================================
Proposal Number: 08200767
Proposal Title: Triggered Star-Formation in W5 East
PI: Marc Gagne
Subject Category: STARS AND WD
Abstract: W5 is the easternmost portion of an enormous complex of HII regions,
star clusters and molecular clouds located at 2 kpc in the Perseus arm. Spitzer
mid-infrared images of the "Mountains of Creation" (the bright-rimmed cloud AFGL
4029) are a stunning demonstration of sequential star-formation. Class I
protostars are tightly clustered in three regions with slightly older T Tauri
stars dispersed about the clusters just ahead of the ionization front advancing
into and eroding the molecular cloud. The region is a zoo of high- and low-mass
young stellar objects, outflows and nebulae. We propose to image the three
clusters with ACIS to characterize X-ray emission from the YSOs, particularly the
Class III weak-lined T Tauri stars that cannot be identified through near- and
mid-infrared searches.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
03:01:31.40 +60:29:13.00 AFGL 4029 ACIS-I NONE 85.0000
==========================================================================================
Proposal Number: 08200787
Proposal Title: The high-mass star forming region DR21
PI: Francesco Damiani
Subject Category: STARS AND WD
Abstract: We propose two 100-ksec ACIS-I observations of the extremely young,
dense, massive star-forming region DR21 in the Cygnus X complex. We aim at
studying how strongly the presence of a cluster of very young massive stars
influences the formation and early evolution of lower-mass cluster stars
(efficiently selected from ACIS X-ray images), and their circumstellar
environment (already being studied with Spitzer data). The DR21 region and the
nearby cluster DB16 are a very good laboratory for an observational study of
sequential/triggered star formation, to be compared with existing theoretical
pictures. We will perform X-ray spectral and variability analysis for the most
intense sources. We will also search for diffuse hot gas, found in star-forming
regions with similar chaaracteristics.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
20:39:00.70 +42:18:56.80 DR 21 ACIS-I NONE 100.0000
==========================================================================================
Proposal Number: 08200821
Proposal Title: Colliding Wind Geometry and Dynamics in Eta Carinae: A New Cycle
PI: Michael Corcoran
Subject Category: STARS AND WD
Abstract: X-rays from the supermassive star Eta Car are produced along a ``bow
shock'' due to the collision of the wind from the primary star with the faster
wind from a hotter, less luminous companion. The 2-10 keV X-ray emission is
unique since it's the only radiation which can be clearly localized in the system
and it acts as an in-situ probe of the primary star. With the tragic loss of the
X-ray Spectrometer on Suzaku, for the foreseeable future the HETGS is the only
instrument capable of diagnosing the line emission in this crucial spectral
region. We propose to obtain 1 HETGS spectrum of Eta Car in AO8 to compare to our
previous HETGS spectra and to provide a clearer measure of the change in the flow
as the star approaches periastron/X-ray maximum in January 2009.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
10:45:03.60 -59:41:04.30 Eta Car ACIS-S HETG 100.0000
==========================================================================================
Proposal Number: 08200904
Proposal Title: Deep Chandra Observations of The Nearest Globular Cluster:
Obtaining a Complete Sample of Primordial Binaries
PI: David Pooley
Subject Category: STARS AND WD
Abstract: We propose to extend our ongoing efforts to understand the internal
dynamics of globular clusters by observing a primordial population of binaries in
M4. Our recent work has shown that the active main-sequence binaries in this
cluster are largely primordial, rather than dynamically formed (as the low mass
X-ray binaries and cataclysmic variables are). A deep Chandra observation will
uncover ~90% of this population. This will constitute the first nearly complete
and well-defined sample of primordial binaries in a globular cluster.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
16:23:35.50 -26:31:31.00 M4 ACIS-S NONE 50.0000
16:23:35.50 -26:31:31.00 M4 ACIS-S NONE 50.0000
==========================================================================================
Proposal Number: 08200925
Proposal Title: The Age of a Stellar System Surrounded by Colliding
Planetesimals
PI: Benjamin Zuckerman
Subject Category: STARS AND WD
Abstract: BD+20 307 is, by more than an order of magnitude, the dustiest main
sequence star known. The dust appears to have been produced by the violent
reduction of the equivalent of a ~300 km diameter object into tiny particles
within the last 1000 yr. Such events should be rare in something the age of our
solar system, but could have been much more common at earlier epochs. To gain
insight into the evolution of solar-type planetary systems, we are proposing to
constrain the age of BD +20 307 by measuring its X-ray luminosity.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
01:54:50.30 +21:18:22.50 BD +20 307 ACIS-S NONE 5.0000
==========================================================================================
Proposal Number: 08201040
Proposal Title: Nature vs. Nurture: The influence of OB star environments on
proto-planetary disk evolution
PI: Jeroen Bouwman
Subject Category: STARS AND WD
Abstract: We propose a combined IRAC/IRS study of a large, well-defined and
unbiased X-ray selected sample of pre-main-sequence stars in three OB
associations: Pismis 24 in NGC 6357, NGC 2244 in the Rosette Nebula, and IC 1795
in the W3 complex. The samples are based on recent Chandra X-ray Observatory
studies which reliably identify hundreds of cluster members and were carefully
chosen to avoid high infrared nebular background. A new Chandra exposure of IC
1795 is requested, and an optical followup to characterise the host stars is
planned.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
02:26:34.40 +62:00:43.00 IC 1795 ACIS-I NONE 50.0000
******************************************************************************************
WD BINARIES AND CV
******************************************************************************************
==========================================================================================
Proposal Number: 08300002
Proposal Title: Monitoring the supersoft source state of many optical novae in
the core of M 31
PI: Wolfgang Pietsch
Subject Category: WD BINARIES AND CV
Abstract: We propose to monitor the M31 core with four 23ks XMM-Newton EPIC and
four 20ks Chandra HRC-I observations equally distributed over AO5 to determine
the duration of the SSS state of optical novae. Detected sources will be
correlated with optical nova positions from the WeCAPP program covering the same
area. EPIC will determine the SSS nature of sources using hardness ratios, HRC-I
will enable continuous monitoring and separate nova candidates from bright X-ray
sources. With a nova rate in the field of ~25/yr and SSS phase sometimes lasting
for years we will simultaneously follow many nova light curves. The durations of
the nova SSS state will allow us to constrain envelope and WD masses. We will
also monitor time variability of ~200 M31 centre X-ray sources (mostly XRBs).
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:42:44.30 +41:16:09.40 M31 HRC-I NONE 20.0000
00:42:44.30 +41:16:09.40 M31 HRC-I NONE 20.0000
00:42:44.30 +41:16:09.40 M31 HRC-I NONE 20.0000
00:42:44.30 +41:16:09.40 M31 HRC-I NONE 20.0000
==========================================================================================
Proposal Number: 08300134
Proposal Title: Testing the Physics of Magnetic Accretion: EX Hydrae from the
Shock to the White Dwarf Surface
PI: Ronnie Hoogerwerf
Subject Category: WD BINARIES AND CV
Abstract: We propose to observe the magnetic Cataclysmic Variable (CV) EX Hydrae
with the HETG to make a direct measurement of the temperature and density
structure of its accretion columns and study the physics of the shock and
subsequent cooling flow. The accretion column structure, crucial to our
understanding of accretion physics, remains one of the last unexplored components
of CVs and other accreting objects. The accretion columns of EX Hydrae are
unobscured and are periodically occulted by the body of the white dwarf, making
it the ideal target for this study. We will use high signal-to-noise light curves
for individual spectral lines to measure the temperature and density structure.
The result will be applicable to a broad range of objects from clusters of
galaxies to T Tauri stars.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:52:24.20 -29:14:56.70 EX Hydrae ACIS-S HETG 20.0000
12:52:24.20 -29:14:56.70 EX Hydrae ACIS-S HETG 160.0000
12:52:24.20 -29:14:56.70 EX Hydrae ACIS-S HETG 160.0000
12:52:24.20 -29:14:56.70 EX Hydrae ACIS-S HETG 160.0000
==========================================================================================
Proposal Number: 08300374
Proposal Title: Determining the population of Cataclysmic Variables in the
Globular Cluster NGC2808
PI: Remon Cornelisse
Subject Category: WD BINARIES AND CV
Abstract: Close binaries, and in particular cataclysmic variables (CVs), play a
vital role in the dynamical evolution of globular clusters. It is, therefore,
important to understand the formation of these systems in the core of a cluster.
Here we propose to test the dynamical formation scenarios of CVs by observing NGC
2808 in the X-rays with Chandra. In combination with already existing FUV imaging
with the Hubble Space Telescope on this globular cluster it will be possible to
unambiguously identify the CVs, and thereby test the formation scenarios for the
first time.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
09:12:02.60 -64:51:46.20 NGC 2808 ACIS-I NONE 60.0000
==========================================================================================
Proposal Number: 08300601
Proposal Title: X-ray Measures of Two New Double-Degenerate, Ultracompact AM CVn
Binaries
PI: Scott Anderson
Subject Category: WD BINARIES AND CV
Abstract: AM CVns are extremely rare double-degenerate cataclysmic variables,
encompassing the shortest-period binaries known. They are of high interest as
possible supernova progenitors, and especially as likely sources of gravity
waves. We have found five new AM CVns in the Sloan Digital Sky Survey (SDSS), a
very significant expansion of this elite subclass. We propose initial Chandra
flux measures for our two most recent discoveries (the others are slated for
cycle 7). Chandra data will constrain their mass accretion rates, a key parameter
in understanding the evolutionary interplay between mass-transfer and
gravitational radiation. The proposed observations will also sensitively assess
the feasibility of follow-on, more detailed X-ray timing and/or spectral
studies.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:08:42.00 +35:50:25.10 SDSS J1208+3550 ACIS-S NONE 3.0000
14:11:18.30 +48:12:57.60 SDSS J1411+4812 ACIS-S NONE 3.0000
==========================================================================================
Proposal Number: 08300667
Proposal Title: Supersoft Sources at Low Metallicity: SMC 13
PI: Thierry Lanz
Subject Category: WD BINARIES AND CV
Abstract: The identification of SN Ia progenitors remains elusive. A promising
channel leading to a SN Ia event involves accreting white dwarfs (WD) that
sustain steady nuclear burning. They are observed as close binary X-ray sources
with a supersoft spectrum (CBSS). We propose to obtain the first Chandra LETGS
spectrum of SMC 13, a CBSS in the SMC. From absorption line spectroscopy, we will
achieve significant advances in determing the properties of SMC 13 and provide
unique data to constrain new evolutionary calculations of accreting hot white
dwarfs. At low metallicities, the population of SN Ia progenitors shifts toward
systems with higher initial WD masses and lower mass donor stars. This difference
might turn out to be crucial to understanding the physics of local vs. distant SN
Ia.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:37:19.00 -72:14:14.00 SMC 13 HRC-S LETG 90.0000
==========================================================================================
Proposal Number: 08300712
Proposal Title: X-ray Observation of a Transient Symbiotic-Star Jet
PI: Jennifer Sokoloski
Subject Category: WD BINARIES AND CV
Abstract: Astrophysical jets are ubiquitous in the universe, yet the collimation
and acceleration mechanism for these outflows are unclear. Accretion disks,
however, are likely to play a key role. White dwarf have possibly the
best-understood disks, so symbiotic stars (SS), which are a recently identified
class of jet-producing objects, are promising targets. The two SS X-ray jets that
have been discovered to date (R Aqr and CH Cyg) both show X-ray structure more
extended than their radio jets. To further study the X-ray properties of SS jets,
most of which are transient, plus investigate changes in the central object when
a jet is ejected, we propose a Chandra TOO observation (slow turn-around) of the
next SS jet that is discovered. This proposal was accepted in AO5-AO7 but not
triggered.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
Transient Symbiotic- ACIS-S NONE 100.0000
==========================================================================================
Proposal Number: 08300829
Proposal Title: Primordial formation of close binaries in globular clusters with
low density cores
PI: Albert Kong
Subject Category: WD BINARIES AND CV
Abstract: The primordial binary population is a key input parameter for any
realistic model of dense star cluster dynamics. However, the number of primordial
binaries and its direct implications for the formation rate of close binaries
remain poorly understood. Theoretical calculations show that cataclysmic
variables can be formed directly from primordial binaries in or near the core of
low core density globular clusters. We propose to use Chandra/HST to study low
density core globular clusters systematically and to test the prediction that
low-luminosity X-ray sources can be formed from primordial binaries in the
cluster core. This project will complement our successful Chandra/HST program to
study the dynamical formation of X-ray sources in high core density globular
clusters.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
09:20:59.30 -77:16:57.00 E3 ACIS-S NONE 20.0000
16:27:14.10 -26:01:29.00 NGC6144 ACIS-S NONE 60.0000
==========================================================================================
Proposal Number: 08300851
Proposal Title: RS Oph: Exploring the Site of a Recurrent Symbiotic Nova
Explosion
PI: Sumner Starrfield
Subject Category: WD BINARIES AND CV
Abstract: RS Oph is a Recurrent Symbiotic Nova in which a white dwarf orbits
inside the outer atmosphere of a red giant and repeatedly explodes on human
timescales. Its last outburst began on 12 February 2006 and it is being observed
from X-ray wavelengths through to the radio. The X-ray emission is that of a
shock moving through the red giant atmosphere and RS Oph is evolving analogously
to that of a low-energy Type II Supernova explosion (but faster). By the
beginning of Cycle 8, it should be nearly to quiescence and we, therefore,
propose two 50 ksec grating observations, separated by about 6 months, in order
to study the hot white dwarf and the emission lines from the cooling gas.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:50:13.20 -06:42:28.50 RS Oph HRC-S LETG 20.0000
17:50:13.20 -06:42:28.50 RS Oph HRC-S LETG 40.0000
17:50:13.20 -06:42:28.50 RS Oph HRC-S LETG 40.0000
==========================================================================================
Proposal Number: 08300935
Proposal Title: Core Collapse Deep Survey: NGC6397
PI: Jonathan Grindlay
Subject Category: WD BINARIES AND CV
Abstract: We propose an ultra-deep survey of the core collapse cluster NGC 6397.
At only 2.3kpc, it can be surveyed ~6X deeper (down to Lx=6E28 erg/s) than any
globular done with Chandra (e.g. 47Tuc) and with significantly reduced central
crowding. Combined with two very deep surveys (V~25-30) just conducted in HST
cycle 13, we shall provide the first, and only possible, globular cluster survey
for the lowest luminosity cataclysmic variables (CVs: AM CVns and Polars) and
millisecond pulsars (MSPs) known in the field. The doubly-recycled MSP (and a
second candidate) as well as magnetic CVs will be studied in detail. This compact
binary survey will provide a complete census and set of identifications of a
large fraction of the cluster's compact binaries, the central engine of core
collapse.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:40:42.00 -53:40:27.90 NGC6397 ACIS-S NONE 90.0000
17:40:42.00 -53:40:27.90 NGC6397 ACIS-S NONE 160.0000
==========================================================================================
Proposal Number: 08301010
Proposal Title: A grating spectrum of a bright nova in outburst
PI: Marina Orio
Subject Category: WD BINARIES AND CV
Abstract: We propose to observe a classical or recurrent nova in outburst with
the Chandra LETG grating, if it is observed to turn into a luminous supersoft
X-ray source using Swift. We also define alternative criteria to trigger the
observation in case an observation with XMM-Newton is possible. Our aims are: a)
Analyse the spectra of the hot white dwarf (WD) atmosphere, deriving effective
temperature, abundances and effective gravity, b) Assess how common it is to find
a significant leftover mass on the WD after a nova outburst, c) Measure the short
term variability due to non radial oscillations of the white dwarf, d) Possibly
also study the supersoft X-ray emission originating in the ejected nebula.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
A new nova HRC-S LETG 35.0000
******************************************************************************************
BH AND NS BINARIES
******************************************************************************************
==========================================================================================
Proposal Number: 08400027
Proposal Title: Localizing ill-studied LMXBs
PI: Mariano Mendez
Subject Category: BH AND NS BINARIES
Abstract: The goal is to localize several LMXBs with sub-arcsecond accuracy to
enable the identification of the optical counterpart, and to monitor RX
J1718-4029.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
09:24:18.10 -31:42:12.00 1RXS J092418.0-31421 HRC-I NONE 1.0000
17:18:24.10 -40:29:33.00 1RXS J171824.2-40293 ACIS-S NONE 2.5000
17:18:24.10 -40:29:33.00 1RXS J171824.2-40293 ACIS-S NONE 2.5000
==========================================================================================
Proposal Number: 08400031
Proposal Title: Chandra follow-up of weak persistent sources found in INTEGRAL
maps
PI: Mariano Mendez
Subject Category: BH AND NS BINARIES
Abstract: We propose to obtain a 1 ksec exposure of up to 4 newly found
unclassified INTEGRAL sources which are weak persistent X-ray binaries (we
exclude from this proposal bright new transients discovered by INTEGRAL). The
unique Chandra positional capabilities will allow for an optical follow-up study.
Follow-up observations are of paramount importance for the classification of the
sources (e.g. as HMXBs/LMXBs, pulsars or in a few rare cases as AXP or DIM). The
timing capabilities of the HRC will allow us to search for (slow) pulsations in
case the compact object is a neutron star while pile-up which would complicate
source localization is no problem.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
IGR persisent weak T HRC-I NONE 1.0000
IGR persisent weak T HRC-I NONE 1.0000
IGR persisent weak T HRC-I NONE 1.0000
IGR persisent weak T HRC-I NONE 1.0000
==========================================================================================
Proposal Number: 08400032
Proposal Title: Chandra follow-up of weak persistent sources
PI: Mariano Mendez
Subject Category: BH AND NS BINARIES
Abstract: We propose to obtain short exposures of a sample of unclassified
sources which are likely weak persistent X-ray binaries. The unique Chandra
positional capabilities will allow for an optical follow-up study. Follow-up
observations are of paramount importance for the classification of the sources
(e.g. as HMXBs/LMXBs, pulsars or in a few rare cases as AXP or DIM). The timing
capabilities of the HRC will allow us to search for (slow) pulsations in case the
compact object is a neutron star while pile-up which would complicate source
localization is no problem.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
16:48:06.90 -45:12:05.30 IGR J16479-4514 HRC-I NONE 1.0000
17:59:46.00 -22:00:54.00 IGR J17597-2201 HRC-I NONE 1.0000
18:48:17.00 -03:10:18.00 IGR J18483-0311 HRC-I NONE 1.0000
==========================================================================================
Proposal Number: 08400061
Proposal Title: A Pilot Study of X-ray Emission from Candidate Massive Star
Clusters
PI: Gordon Garmire
Subject Category: BH AND NS BINARIES
Abstract: We propose to continue a pilot study by observing three candidate young
(< 10 Myr) clusters of massive (>20 Msun) stars for 10 ks apiece with ACIS-I. The
ages, initial mass functions, and total masses, will be determined as part of an
LTSA-funded project to study the populations of massive stars in 130 clusters
with the VLA, HST, SOFIA, Keck, and Gemini. The observations will (1) identify
pulsars, magnetars, and HMXBs, so that we can determine the masses of the
progenitors of compact objects, (2) reveal X-ray emisison from colliding-wind
binaries, so that we can constrain the binary fraction of massive stars, and (3)
measure diffuse X-rays from clusters with a variety of ages, so that we can
understand how the winds of the massive stars in clusters interact with their
surrounding ISM.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
01:06:45.00 +59:40:36.00 BDSB2003+50 ACIS-I NONE 10.0000
04:11:10.00 +51:09:58.00 BDSB2003+65 ACIS-I NONE 10.0000
04:36:50.00 +50:52:46.00 BDSB2003+66 ACIS-I NONE 10.0000
==========================================================================================
Proposal Number: 08400062
Proposal Title: A Pilot Study of X-ray Emission from Candidate Massive Star
Clusters
PI: Gordon Garmire
Subject Category: BH AND NS BINARIES
Abstract: We propose to continue a pilot study by observing three candidate young
(< 10 Myr) clusters of massive (>20 Msun) stars for 10 ks apiece with ACIS-I. The
ages, initial mass functions, and total masses, will be determined as part of an
LTSA-funded project to study the populations of massive stars in 130 clusters
with the VLA, HST, SOFIA, Keck, and Gemini. The observations will (1) identify
pulsars, magnetars, and HMXBs, so that we can determine the masses of the
progenitors of compact objects, (2) reveal X-ray emisison from colliding-wind
binaries, so that we can constrain the binary fraction of massive stars, and (3)
measure diffuse X-rays from clusters with a variety of ages, so that we can
understand how the winds of the massive stars in clusters interact with their
surrounding ISM.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
04:40:39.00 +50:27:39.00 BDSB2003+67 ACIS-I NONE 10.0000
06:15:53.00 +14:16:08.00 BDSB2003+81 ACIS-I NONE 10.0000
06:57:15.00 -08:19:48.00 BDSB2003+93 ACIS-I NONE 10.0000
==========================================================================================
Proposal Number: 08400081
Proposal Title: Chandra follow-up of weak persistent sources
PI: Mariano Mendez
Subject Category: BH AND NS BINARIES
Abstract: We propose to obtain short exposures of a sample of unclassified
sources which are likely weak persistent X-ray binaries. The unique Chandra
positional capabilities will allow for an optical follow-up study. Follow-up
observations are of paramount importance for the classification of the sources
(e.g. as HMXBs/LMXBs, pulsars or in a few rare cases as AXP or DIM). The timing
capabilities of the HRC will allow us to search for (slow) pulsations in case the
compact object is a neutron star while pile-up which would complicate source
localization is no problem.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:29:03.00 +59:34:19.00 IGR J00291+5934 ACIS-S NONE 3.0000
07:50:35.30 -15:47:16.00 IGR J07506-1547 HRC-I NONE 1.0000
11:11:25.00 -67:23:31.00 IGR J11114-6723 HRC-I NONE 1.0000
16:19:25.90 -28:09:36.00 IGR J16194-2810 HRC-I NONE 1.0000
16:50:01.20 -33:06:57.00 IGR J16500-3307 HRC-I NONE 1.0000
17:43:00.20 -36:22:51.00 XTE J1743-363 HRC-I NONE 1.0000
18:49:04.00 -00:01:30.00 IGR J18490-0000 HRC-I NONE 1.0000
19:30:46.10 +05:30:07.00 IGR J19308+0530 HRC-I NONE 1.0000
==========================================================================================
Proposal Number: 08400113
Proposal Title: A Red Giant Companion for the Transient 7.8 s Pulsar XTE
J1829-098 ?
PI: JULES HALPERN
Subject Category: BH AND NS BINARIES
Abstract: The transient 7.8 s pulsar XTE J1829-098 was discovered in a PCA scan
of the Galactic plane, and despite its serendipitous detection by XMM-Newton, we
have not been able to identify it optically with the expected Be star or OB
supergiant. Neither are its X-ray properties compatible with an anomalous X-ray
pulsar (magnetar). A more accurate Chandra position is needed to select among
plausible candidates around the XMM error circle, one of which is an extremely
cool M9-10 red giant, and apparently a long-period variable. If this star is the
companion of XTE J1829-098, it would be the coolest red giant/X-ray binary, and
its radial pulsations could cause episodic accretion onto the neutron star, whose
X-ray luminosity varies by at least a factor of 1000.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
18:29:44.10 -09:51:23.30 XTE J1829-098 ACIS-I NONE 5.0000
18:29:44.10 -09:51:23.30 XTE J1829-098 ACIS-I NONE 5.0000
18:29:44.10 -09:51:23.30 XTE J1829-098 ACIS-I NONE 5.0000
==========================================================================================
Proposal Number: 08400166
Proposal Title: X-Ray Jets in Microquasars
PI: Stephane Corbel
Subject Category: BH AND NS BINARIES
Abstract: We propose Target of Opportunity (ToO) observations for detailed
studies of X-ray jets from microquasars. We describe our discovery of radio/X-ray
jets in two microquasars, why X-ray jets are probably much more common than
previously thought, and transient X-ray jets offer an exciting new way to probe
the physics of relativistic jets from black holes. The proposed ToO observations
are optimized to discover and study (flux evolution, morphology, SED, proper
motion, ...) of new X-ray jets from microquasars, triggered by their detection as
radio lobes. This will have implications not only for the study of jets from
Galactic X-ray binaries, but also for our understanding of relativistic jets from
active galactic nuclei (AGN).
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
X-ray Jets ACIS-S NONE 30.0000
X-ray Jets ACIS-S NONE 50.0000
X-ray Jets ACIS-S NONE 60.0000
==========================================================================================
Proposal Number: 08400356
Proposal Title: High Resolution Spectroscopy of GRS 1915+105 in the 'Soft' State
PI: Yoshihiro Ueda
Subject Category: BH AND NS BINARIES
Abstract: We propose to perform a TOO observation of GRS 1915+105 in the soft
state with Chandra/HETGS. Investigation of iron-K absorption lines provide us
with powerful diagnostics of highly ionized plasma associated with the accretion
flow of microquasars. Although such features were discovered firstly from
superluminal sources, the nature of the highly ionized plasma in GRS 1915+105 and
its possible relation to relativistic jet ejection still remains unclear. This is
because the source stays mostly in the low/hard state, where the ions are fully
ionized by the strong hard X-ray flux and a very weak feature from H-like Fe ions
is observable. Previous ASCA observations indicate that the iron-K absorption
features become prominent in this state, thus best suited for detailed plasma
diagnostics.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
19:15:11.60 +10:56:44.90 GRS 1915+105 ACIS-S HETG 50.0000
==========================================================================================
Proposal Number: 08400359
Proposal Title: Following a black hole candidate X-ray transient to quiescence
PI: Peter Jonker
Subject Category: BH AND NS BINARIES
Abstract: There is increasing evidence that the quiescent state of BH X-ray
binaries is different from the hard state that is observed at higher
luminosities. Our recent Chandra campaigns on BH transient decays suggest that a
transition takes place when the luminosity suddenly drops by almost three orders
of magnitude during a period of only a few weeks. This transition has so far not
been resolved, but there is strong evidence that the spectrum softens during this
rapid decay. Both the decay and spectral evolution can provide important
constraints for jet-dominated and ADAF-like models. We propose a more aggressive
program than before and request 6 simultaneous Chandra/VLA TOO observations that
aim to cover this rapid transition in full detail for the first time with X-ray
and radio observations.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
TOO ACIS-S HETG 7.0000
TOO ACIS-S HETG 7.0000
TOO ACIS-S NONE 7.0000
TOO ACIS-S NONE 15.0000
TOO ACIS-S NONE 35.0000
TOO ACIS-S NONE 100.0000
==========================================================================================
Proposal Number: 08400362
Proposal Title: Quasi-persistent neutron-star X-ray binaries in quiescence
PI: Rudy Wijnands
Subject Category: BH AND NS BINARIES
Abstract: We propose to observe the next (quasi-)persistent neutron-star low-mass
X-ray binary that turns off and becomes quiescent. This will provide an excellent
opportunity to study the effects of prolonged accretion on the neutron-star
properties (i.e., crust and core and thus the properties of ultradense matter)
and the quiescent properties of low-mass X-ray binaries. Two follow-up
observations taken several months later will provide important information about
the time evolution of the quiescent properties. In particular, if indeed the
quiescent X-rays are emitted by the crust, we will be able to study its evolution
in time,thus setting strong constraints on the crust cooling models and the exact
structure of the crust.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
Quiescent source ACIS-S NONE 30.0000
Quiescent source ACIS-S NONE 30.0000
Quiescent source ACIS-S NONE 30.0000
==========================================================================================
Proposal Number: 08400404
Proposal Title: Chandra observations of the 2007 PSR B1259-63 periastron
passage.
PI: Maria Chernyakova
Subject Category: BH AND NS BINARIES
Abstract: PSR B1259-63 is a unique binary system with a radio pulsar from which
unpulsed X-ray, Gamma-ray, and radio emission was observed. The pulsar is in a
highly eccentric 3.4 year orbit with a Be star. Collision of the pulsar wind with
the wind of Be star plays a crucial role in generation of the observed emission.
The goal of this proposal is to investigate spectral evolution of the system as
the pulsar passes through the Be star disk, and with the help of the received
data to reconstruct the physical processes governing the system.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
13:02:47.60 -63:50:08.70 PSR B1259-63 ACIS-S NONE 3.0000
13:02:47.60 -63:50:08.70 PSR B1259-63 ACIS-S HETG 5.0000
13:02:47.60 -63:50:08.70 PSR B1259-63 ACIS-S HETG 5.0000
13:02:47.60 -63:50:08.70 PSR B1259-63 ACIS-S HETG 7.0000
==========================================================================================
Proposal Number: 08400470
Proposal Title: Using Chandra to investigate the X-ray properties of the
enigmatic, bipolar TeV source HESS J1841-053
PI: Gerd Puehlhofer
Subject Category: BH AND NS BINARIES
Abstract: From a population of Galactic TeV gamma-ray sources newly detected with
the H.E.S.S. telescope system, HESS J1841-053 is the only object which shows an
extended, bipolar TeV morphology, together with an X-ray binary at the core of
the source. We propose to use Chandra observations on the lobes of HESS J1841-053
to identify the nature of the TeV source and to verify its association with the
central object. If the suggested identification holds, HESS J1841-053 would
represent a new type of X-ray/TeV source.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
18:39:25.00 -05:48:20.00 HESS J1841-053-SW ACIS-I NONE 20.0000
18:41:60.00 -05:22:04.00 HESS J1841-053-NE ACIS-I NONE 20.0000
==========================================================================================
Proposal Number: 08400583
Proposal Title: Bright edge-on LMXB transients to map ionized disk atmospheres
PI: Laurence Boirin
Subject Category: BH AND NS BINARIES
Abstract: With the discovery of Fe XXV and Fe XXVI lines in several binaries
viewed close to the disk plane, XMM and Chandra have revealed the existence of a
highly-ionized atmosphere above the accretion disk. We have further demonstrated
that the spectral changes during dips from dipping LMXBs, both in the lines and
in the continuum could be explained by a decrease in the ionization level of this
plasma. We want to investigate the presence of such a highly ionized plasma in
three other binaries viewed close to the disk plane should these currently quiet
transient sources turn on. We wish to constrain the plasma properties (location
in binary, stationary or outflow) as a function of binary parameters
(inclination, period) and luminosity.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:02:06.50 -29:56:44.10 MXB 1659-298 ACIS-S HETG 90.0000
17:58:40.00 -33:48:27.00 4U 1755-33 ACIS-S HETG 90.0000
21:31:26.20 +47:17:02.00 4U 2129+47 ACIS-S HETG 90.0000
==========================================================================================
Proposal Number: 08400666
Proposal Title: Precise Localization of Neutron Star Soft X-ray Transients
PI: Deepto Chakrabarty
Subject Category: BH AND NS BINARIES
Abstract: We propose to observe four neutron star (NS) soft X-ray transients in
outburst to obtain accurate source positions, continuing a successful program
from the previous 2 cycles. This continuing study will allow us to reobserve such
sources in future cycles to study the quiescent X-ray emission in NS SXTs. Recent
results from Chandra and XMM suggest that the standard picture of NS SXT emission
may not be as straightforward as previously thought. This proposal will increase
the number of known SXTs with good positions, providing a more uniform sample of
the population for future work.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
NS SXT HRC-S NONE 1.0000
NS SXT HRC-S NONE 1.0000
NS SXT HRC-S NONE 1.0000
NS SXT HRC-S NONE 1.0000
==========================================================================================
Proposal Number: 08400682
Proposal Title: The Ring of Fire: Constraining the jet power of Cygnus X-1 from
its shocked shell.
PI: Sebastian Heinz
Subject Category: BH AND NS BINARIES
Abstract: We propose a 50ksec ACIS-I oservation of the shocked radio shell
recently found around the black hole X-ray binary Cyg X-1. This shell has been
interpreted as the swept up ISM that is pushed aside by a bubble of relativistic
gas inflated by the jet of Cyg X-1. Detecting the shock in soft X-ray and
measuring its temperature and emission measure will allow us to confirm the
jet-origin of the shell and, for the first time, to unambiguously measure the
average jet power of Cyg X-1. In order to properly model and subtract the diffuse
emission from the dust scattering halo and the wings of the PSF we also propose a
simultaneous 5ksec RXTE observation of the point source.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
19:58:06.60 +35:20:08.00 Cygnus X-1 ACIS-I NONE 50.0000
==========================================================================================
Proposal Number: 08400741
Proposal Title: Understanding the nature of high inclination low mass X-ray
binaries: broad-band and line spectra from A1744-361
PI: Tod Strohmayer
Subject Category: BH AND NS BINARIES
Abstract: We propose to observe the transient dipping LMXB system A1744-361
during an outburst with Chandra HETGS, and contemporaneously with RXTE PCA. This
will be the first observation of A1744-361 with a high resolution spectral
instrument, and will facilitate; (1) sigficant detection of narrow spectral lines
for the first time from A1744-361, (2) detection and line profile measurement of
its broad iron emisson line, (3) unambiguous determination of source orbital
period, (4) unambiguous determination of source position, (5) sigficant detection
of kHz QPOs, and (6) understanding of the ionized plasma in the immediate
environs of A1744-361, and dippers in general. These science goals rely on the
unique qualities of Chandra (e.g., high spectral and angular resolution) and
RXTE.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:48:13.10 -36:07:58.20 A1744-361 ACIS-S HETG 80.0000
==========================================================================================
Proposal Number: 08400768
Proposal Title: Supergiant Fast X-ray Transients: New Candidates and
Characterization of Quiescence
PI: David Smith
Subject Category: BH AND NS BINARIES
Abstract: Supergiant fast x-ray transients (SFXTs) are a recently-discovered
class of high-mass x-ray binary with extremely short, hard x-ray outbursts
(lasting for hours) and blue supergiant companions. They are difficult to
discover, so the class has only now begun to grow, based on monitoring of the
Galactic plane by INTEGRAL and RXTE. Some of the systems contain pulsars; perhaps
all contain neutron stars. Very little is known about the emission outside of
outburst. Here we propose a systematic study of emission in quiescence (or at
least in intervals chosen at random, which might also contain outbursts). We also
propose brief pointings to discover or confirm the counterparts to several
systems which are candidates for the SFXT class.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
11:21:46.90 -59:51:42.00 IGR J11215-5952 ACIS-S NONE 5.0000
12:47:35.00 -60:38:34.00 1A 1244-60 ACIS-I NONE 5.0000
17:49:06.00 -27:33:00.00 AX J1749.1-2733 ACIS-S NONE 5.0000
18:45:02.11 -04:33:55.08 AX 1845.0-0433 ACIS-S NONE 5.0000
==========================================================================================
Proposal Number: 08400783
Proposal Title: Monitoring Faint X-ray Transients in the Galactic Center
PI: Frederick Baganoff
Subject Category: BH AND NS BINARIES
Abstract: We propose eight 5-ks ACIS-I observations of the SgrA* field to monitor
the rate of faint X-ray transients in the central 25 pc of the Galaxy. This
region contains 0.1% of the Galactic stellar mass, making it an ideal location
for studying faint X-ray transients. In 6 years of Chandra observations, we have
detected 7 transients with luminosities greater than 5e+33 erg/s, indicating that
they are either HMXBs or LMXBs containing a black hole or neutron star.
Remarkably, 4 of the transients are located within 1 pc of SgrA*, 20 times
overabundant per unit stellar mass. This may be evidence for a cluster of several
tens of thousands of black holes and neutron stars swarming around the Galactic
supermassive black hole, as predicted by Morris (1993) and Miralda-Escude & Gould
(2000).
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:45:40.00 -29:00:28.00 Sgr A* ACIS-I NONE 5.0000
17:45:40.00 -29:00:28.00 Sgr A* ACIS-I NONE 5.0000
17:45:40.00 -29:00:28.00 Sgr A* ACIS-I NONE 5.0000
17:45:40.00 -29:00:28.00 Sgr A* ACIS-I NONE 5.0000
17:45:40.00 -29:00:28.00 Sgr A* ACIS-I NONE 5.0000
17:45:40.00 -29:00:28.00 Sgr A* ACIS-I NONE 5.0000
==========================================================================================
Proposal Number: 08400789
Proposal Title: Transient LMXBs in Globular Clusters: More Numerous Than We
Thought?
PI: David Pooley
Subject Category: BH AND NS BINARIES
Abstract: Since the discovery of globular cluster LMXBs in the 1970s, it was
assumed that there was only one bright LMXB per cluster. Deep Chandra
observations of several globular clusters have revealed that they contain
numerous quiescent LMXB systems, any of which could go into outburst. Our
observations will determine whether new outbursts from transient LMXBs in NGC
6440, Terzan 5, and Terzan 1 are from the same sources that were previously seen
in outburst.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:35:47.20 -30:28:54.00 Terzan 1 ACIS-S NONE 10.0000
17:48:04.90 -24:46:45.00 Terzan 5 ACIS-S NONE 10.0000
17:48:52.70 -20:21:37.00 NGC 6440 ACIS-S NONE 2.5000
==========================================================================================
Proposal Number: 08400850
Proposal Title: A Chandra HETGS Study of LMC X-4 : Binary Disk and Wind
Properties and Studies of Grain Distribution at Small Angles
PI: Julia Lee
Subject Category: BH AND NS BINARIES
Abstract: We propose a 150 ks (~ a binary period) HETGS observation of LMC X-4 at
a median-to-high flux state to facilitate several independent science goals: (1)
to study the physics of the companion wind feeding the disk, (2) to study the
disk atmosphere and putative wind causing the super-orbital variation, and (3) to
study small angle scattering of the X-ray halo to diagnose ISM grain properties
(the line-of-sight position, size distribution and density of grains) in the
LMC.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
05:32:49.80 -66:22:13.80 LMC X-4 ACIS-S HETG 150.0000
==========================================================================================
Proposal Number: 08400891
Proposal Title: Confirming the Structure of the Nebular Trail of PSR J1614-2230
PI: Mallory Roberts
Subject Category: BH AND NS BINARIES
Abstract: The 3.15ms pulsar PSR J1614-2230 was discovered during a recent radio
survey of unidentified EGRET gamma-ray sources. It is the first true millisecond
pulsar detected with a companion whose minimum mass is as large as 0.4 solar
masses. A short (5ks), exploratory XMM-Newton observation revealed it to be an
X-ray source with an apparent extended nebular trail. Here we request a 20ks
Chandra ACIS-S observation to image the structure of the nebular trail which will
complement spectral studies to be performed with an already accepted deeper
(50ks) observation by XMM-Newton.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
16:14:36.50 -22:30:31.20 PSR J1614-2230 ACIS-S NONE 20.0000
==========================================================================================
Proposal Number: 08400900
Proposal Title: Spectroscopy of a bright burst from 4U 1812-12
PI: Johannes in 't Zand
Subject Category: BH AND NS BINARIES
Abstract: Our goal is to measure with the HETGS a bright type-I X-ray burst with
photospheric radius expansion (PRE), search for signatures of the ashes of
nuclear burning and, if succesful, attempt a measurement of the gravitational
redshift. The target, 4U 1812-12, is an ultracompact X-ray binary whose bursts
are known to be consistently very bright, show strong PRE and are fairly
predictable in occurrence. We request a joint RXTE observation to measure the
neutron star spin via burst oscillations.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
18:15:06.20 -12:05:46.70 4U 1812-12 ACIS-S HETG 86.0000
==========================================================================================
Proposal Number: 08400908
Proposal Title: Measuring the Distance and Dust Distribution to Cen X-3 with
X-Ray Halo Variability
PI: Thomas Thompson
Subject Category: BH AND NS BINARIES
Abstract: X-ray halos can provide information on interstellar grain properties
(size, density, composition) and on the spatial distribution along the line of
sight. Eclipsing X-ray binary systems, in particular, offer unique advantages, as
the evolution of the halo following an abrupt eclipse is the easiest to model,
and this variability can be used to measure the source distance. We propose to
observe Cen X-3, beginning ~5 ks before eclipse egress and ending ~35 ks after
eclipse egress. The X-ray halo variability will be used to determine the distance
and dust distribution to Cen X-3, and will also probe the spatial relationship
between gas and dust along the line of sight.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
11:21:15.80 -60:37:22.70 Cen X-3 ACIS-S NONE 40.0000
==========================================================================================
Proposal Number: 08400979
Proposal Title: X-raying the faintest black hole binaries
PI: Elena Gallo
Subject Category: BH AND NS BINARIES
Abstract: We propose deep Chandra observations of two nearby quiecsent black hole
binaries, in order to test whether 1e30 erg/sec is a limiting luminosity for
short orbital period quiescent systems.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
16:50:01.00 -49:57:45.00 XTE J1650-500 ACIS-S NONE 37.0000
==========================================================================================
Proposal Number: 08400982
Proposal Title: From Super-Eddington to zero: following a Z source into
quiescence
PI: Jeroen Homan
Subject Category: BH AND NS BINARIES
Abstract: XTE J1701-462 is likely the most luminous Galactic transient neutron
star LMXB (NSXB) in the history of X-ray astronomy. Early observations have
already challenged our view on the role of mass accretion rate in NSXBs.
Observing XTE J1701-462 as it returns to quiescence creates a unique opportunity
to study the effects of mass-accretion rate on the spectral/variability
properties in a single NSXB over an unprecedented luminosity range. We propose a
Chandra/XMM-Newton TOO program with two goals: 1) observe the source during the
end of the decay and in quiescence, to complete what might well become a 'Rosetta
stone' for NSXBs and 2) constrain the structure of neutron stars by studying the
effects of super-Eddington accretion on the cooling of the crust/core in
transient NSXBs.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:00:56.00 -46:10:07.00 XTE J1701-462 ACIS-S NONE 5.0000
17:00:56.00 -46:10:07.00 XTE J1701-462 ACIS-S NONE 10.0000
17:00:56.00 -46:10:07.00 XTE J1701-462 ACIS-S NONE 20.0000
17:00:56.00 -46:10:07.00 XTE J1701-462 ACIS-S NONE 30.0000
17:00:56.00 -46:10:07.00 XTE J1701-462 ACIS-S NONE 40.0000
==========================================================================================
Proposal Number: 08401029
Proposal Title: Localization and Spectra of INTEGRAL-Selected Sources in the
Galactic Plane
PI: John Tomsick
Subject Category: BH AND NS BINARIES
Abstract: The INTEGRAL satellite is discovering a large number of new hard X-ray
sources in the Galactic plane. In most cases, the few arcminute INTEGRAL
positions do not allow for identification of these IGR sources at other
wavelengths, leaving their nature unclear. Chandra can make a major contribution
to studies of IGR sources by localizing the sources to allow for the
identification of multi-wavelength counterparts and by constraining their soft
X-ray spectra. Many of the IGR sources that have been identified are High-Mass
X-ray Binaries (HMXBs) with interesting properties. We propose for relatively
short Chandra observations of 20 unidentified IGR sources in the Galactic plane
to search for HMXBs or other unusual Galactic sources.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:23:24.00 +61:41:31.20 IGR J00234+6141 ACIS-S NONE 5.0000
01:36:18.00 +66:10:37.20 IGR J01363+6610 ACIS-S NONE 5.0000
06:07:24.00 +22:04:58.80 IGR J06074+2205 ACIS-S NONE 5.0000
09:02:33.10 -48:11:45.60 IGR J09026-4812 ACIS-S NONE 5.0000
10:10:07.80 -56:54:46.40 IGR J10101-5654 ACIS-S NONE 5.0000
11:30:30.00 -62:55:51.60 IGR J11305-6256 ACIS-I NONE 5.0000
11:43:52.00 -61:08:60.00 IGR J11435-6109 ACIS-S NONE 5.0000
14:51:32.90 -55:42:16.20 IGR J14515-5542 ACIS-S NONE 5.0000
17:20:05.30 -31:17:24.00 IGR J17200-3116 ACIS-S NONE 5.0000
17:28:41.30 -29:22:55.20 IGR J17285-2922 ACIS-S NONE 5.0000
17:33:08.00 -24:06:46.10 IGR J17331-2406 ACIS-S NONE 5.0000
17:40:42.00 -28:07:58.80 IGR J17407-2808 ACIS-S NONE 5.0000
17:44:31.70 -27:46:58.80 IGR J17445-2747 ACIS-S NONE 5.0000
17:50:44.00 -28:56:17.20 IGR J17507-2856 ACIS-S NONE 5.0000
18:19:16.80 -25:42:10.80 IGR J18193-2542 ACIS-S NONE 5.0000
18:21:21.60 -13:18:28.80 IGR J18214-1318 ACIS-S NONE 5.0000
18:25:37.40 -10:35:13.20 IGR J18256-1035 ACIS-S NONE 5.0000
18:25:56.40 -07:06:21.60 IGR J18259-0706 ACIS-S NONE 5.0000
18:32:28.30 -07:56:24.00 IGR J18325-0756 ACIS-S NONE 5.0000
18:53:54.50 +07:27:28.80 IGR J18539+0727 ACIS-S NONE 5.0000
==========================================================================================
Proposal Number: 08401035
Proposal Title: Faint persistent X-ray sources in the Galactic Bulge
PI: Marc Klein-Wolt
Subject Category: BH AND NS BINARIES
Abstract: We propose short (1 ksec) observations with the HRC-I of a selection of
faint persistent X-ray sources in the Galactic Bulge for which very little is
know. These sources are detected in the PCA/RXTE bulge scan project at
luminosities below 10^36 erg/sec and are most likely HMXB or LMXB; they are
either Be/X-ray binaries, and hence candidates to show slow X-ray pulsations, or
they are ultra-compact binaries in which the compact object is accreting from a
degenarate donor and in which case they are candidates to show gravitational
waves. The HRC observations will allow us to search for slow pulsations as well
give for the first time an accurate position that will allow for optical/IR
follow-up studies to determine the binary parameters.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:10:12.00 -28:07:05.90 XTE J1710-281 HRC-I NONE 1.0000
17:12:34.10 -37:38:35.90 SAX J1712.6-3739 HRC-I NONE 1.0000
17:17:25.60 -40:45:43.90 XTE J1717-407 HRC-I NONE 1.0000
17:28:37.70 -29:09:25.20 XTE J1728-295 HRC-I NONE 1.0000
17:33:08.00 -24:06:46.10 IGR J17331-2406 HRC-I NONE 1.0000
17:44:08.40 -23:07:19.20 XTE J1744-230 HRC-I NONE 1.0000
17:52:48.00 -28:00:00.00 XTE J1752-280 HRC-I NONE 1.0000
18:05:37.10 -29:31:15.20 XTE J1805-295 HRC-I NONE 1.0000
18:08:24.50 -23:09:17.60 RXS J180824.5 HRC-I NONE 1.0000
18:12:48.00 -23:00:00.00 XTE J1812-230 HRC-I NONE 1.0000
18:38:01.00 -06:55:55.20 AXJ183800-0655 HRC-I NONE 1.0000
==========================================================================================
Proposal Number: 08401042
Proposal Title: Spitzer-Chandra ToO Observations of a Short/Hard GRB
PI: Kevin Hurley
Subject Category: BH AND NS BINARIES
Abstract: We propose an ambitious multiwavelength approach to the short GRB
mystery, leveraging Spitzer with Chandra as well as numerous ground-based
telescopes. By measuring the broad-band spectrum of the afterglow and any
concurrent "mini-supernova" over a wide range of wavelengths at several epochs,
we can distinguish between models proposed to explain this type of burst. We will
constrain the energetics of the explosion, constrain the short GRB bursting rate
(an important number for gravitational wave observatories), and measure with
unprecedented detail the stellar content of a short burst host galaxy. Given the
high impact nature of these observations and the rarity of short bursts, we are
requesting multiepoch ToO observations on a single event in Spitzer Cycle
3/Chandra Cycle 8.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
Short GRB ACIS-S NONE 10.0000
Short GRB ACIS-S NONE 20.0000
******************************************************************************************
SN, SNR AND ISOLATED NS
******************************************************************************************
==========================================================================================
Proposal Number: 08500003
Proposal Title: A new magnetar in a young supernova remnant
PI: Bryan Gaensler
Subject Category: SN, SNR AND ISOLATED NS
Abstract: Anomalous X-ray Pulsars (AXPs) are an exotic population of pulsating
X-ray sources, which are now thought to be highly magnetized neutron stars
("magnetars"). However, the evolution, demography, and relation of magnetars to
other types of neutron star are all not yet understood. We have identified a new
candidate association between an AXP and a young supernova remnant (SNR), for
which we propose XMM and Chandra observations. These data can confirm our AXP and
SNR identifications, and can thus help constrain the origin, evolution and
physical properties of the magnetar population.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
15:50:54.00 -54:18:25.20 1E 1547.0-5408 ACIS-I NONE 10.0000
==========================================================================================
Proposal Number: 08500010
Proposal Title: A Search for Jet Breaks in Long GRB afterglows
PI: Gordon Garmire
Subject Category: SN, SNR AND ISOLATED NS
Abstract: In the standard 'fireball' model for GRB afterglows, the jet opening
angle can be determined from the jet break time. Previous studies have found jet
break times of the order of a few days, implying jet angles of < 5 degrees.
Surprisingly, the X-ray light curves observed by Swift seem to be in conflict
with earlier results, with no observable jet break for many bursts in the first
10 days. This implies far less collimation than previously thought, and has a
strong impact on the derived explosion energies. In order to search for late jet
breaks, we propose to follow 4 carefully chosen GRB afterglows with late-time
observations by Chandra.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
GRB xxxxxx ACIS-S NONE 12.0000
GRB xxxxxx ACIS-S NONE 12.0000
GRB xxxxxx ACIS-S NONE 12.0000
GRB xxxxxx ACIS-S NONE 12.0000
GRB xxxxxx ACIS-S NONE 25.0000
GRB xxxxxx ACIS-S NONE 25.0000
GRB xxxxxx ACIS-S NONE 25.0000
GRB xxxxxx ACIS-S NONE 25.0000
GRB xxxxxx ACIS-S NONE 50.0000
GRB xxxxxx ACIS-S NONE 50.0000
GRB xxxxxx ACIS-S NONE 50.0000
GRB xxxxxx ACIS-S NONE 50.0000
==========================================================================================
Proposal Number: 08500019
Proposal Title: The very old nearby pulsar J0108-1431
PI: Gordon Garmire
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We propose to image the field around PSR J0108-1431 to detect this very
old pulsar or determine an upper limit on its X-ray flux.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
01:08:08.30 -14:31:48.50 PSR J0108-1431 ACIS-I NONE 30.0000
==========================================================================================
Proposal Number: 08500022
Proposal Title: X-ray Emission from the Planet Pulsar
PI: Gordon Garmire
Subject Category: SN, SNR AND ISOLATED NS
Abstract: PSR 1257+12 is the famous millisecond pulsar with a planetary system.
We observed this pulsar with Chandra in 2005 and detected a surprisingly low
X-ray flux. A possible interpretaion of the the low flux is that the pulsar's
X-rays are absorbed by clouds of circumpulsar matter orbiting the pulsar. To
check this hypothesis, we propose to monitor the pulsar with Chandra.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
13:00:03.00 +12:40:57.30 PSR B1257+12 ACIS-S NONE 20.0000
==========================================================================================
Proposal Number: 08500023
Proposal Title: Chandra monitoring of the candidate Anomalous X-ray Pulsar AX
J1845-0258
PI: Gordon Garmire
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We propose to monitor the flux of the transient Anomalous X-ray Pulsar
candidate AX J1845-0258 with Chandra ACIS.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
18:44:54.60 -02:56:53.00 AX J1845-0258 ACIS-I NONE 5.0000
18:44:54.60 -02:56:53.00 AX J1845-0258 ACIS-I NONE 5.0000
18:44:54.60 -02:56:53.00 AX J1845-0258 ACIS-I NONE 5.0000
18:44:54.60 -02:56:53.00 AX J1845-0258 ACIS-I NONE 5.0000
18:44:54.60 -02:56:53.00 AX J1845-0258 ACIS-I NONE 5.0000
18:44:54.60 -02:56:53.00 AX J1845-0258 ACIS-I NONE 5.0000
==========================================================================================
Proposal Number: 08500024
Proposal Title: NEARBY RECYCLED PULSAR J1909-3744
PI: Gordon Garmire
Subject Category: SN, SNR AND ISOLATED NS
Abstract: PSR J1909-3744 is expected to be among the top five X-ray brightest
recycled pulsars. Its proximity and relatively high spin-down power make it a
promising target for studying the X-ray properties of very old recycled pulsars
including thermal radiation from hot polar caps and non-thermal radiation from
magnetospheres.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
19:09:47.50 -37:44:14.20 PSR J1909-3744 ACIS-S NONE 30.0000
==========================================================================================
Proposal Number: 08500044
Proposal Title: Exploring the center-filled SNR G67.7+1.8
PI: Peter Predehl
Subject Category: SN, SNR AND ISOLATED NS
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
19:54:26.00 +31:28:54.00 G67.7+1.8 ACIS-I NONE 30.0000
==========================================================================================
Proposal Number: 08500045
Proposal Title: High resolution investigation of possible cyclotron absorption
line harmonics from RX J1605.3+3249
PI: Peter Predehl
Subject Category: SN, SNR AND ISOLATED NS
Abstract: RX J1605.3+3249 is member of a class of isolated neutron stars which
show a thermal X-ray spectrum. Broad absorption lines in the X-ray spectra of
most of these objects were discovered which is interpreted as resonant absorption
at the proton cyclotron energy. EPIC-pn spectra show strong evidence for harmonic
absorption lines with energy ratios of 2:3:4 with the lowest-energy line at ~400
eV. We propose to use the unique low energy capability of the LETGS in order to
confirm the multiple absorption lines and their expected fundamental at 200 eV.
The detection of harmonic lines would be unique among the isolated neutron stars
with purely thermal emission and extremely important for understanding their
underlying physical mechanisms.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
16:05:18.50 +32:49:18.00 RX J1605.3+3249 HRC-S LETG 100.0000
==========================================================================================
Proposal Number: 08500060
Proposal Title: HETG Spectroscopy of the Crab Pulsar and the Interstellar Medium
PI: Claude Canizares
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We propose a 50 ks HETG-ACIS observation of the Crab pulsar. The
excellent ACIS spatial resolution will enable us for the first time to obtain a
"clean" grating spectrum of the pulsar itself. Although we will obtain an image
of the pulsar, it will be pilled-up, as our observing strategy is to obtain a
high quality grating spectrum. Rather, we intend to verify the evidence for an
expanding remnant shell that has been marginally detected in the existing
calibration observations. The proposed observation will also allow us to study
the X-ray Absorption Fine Structure in the interstellar medium.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
05:34:31.90 +22:00:52.10 Crab Pulsar ACIS-S HETG 50.0000
==========================================================================================
Proposal Number: 08500065
Proposal Title: High resolution spectral imaging of SN 1987A at 20 years: HETG
observation
PI: Claude Canizares
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We propose deep, high-resolution observations of SN 1987A at ~ 20 years
after its explosion. Here we use 270 ks of HETGS observation time to provide the
highest-resolution spectra of this target over the band from the O VII triplet (~
0.55 keV, 22 A) to the Fe-K line region (~ 6-7 keV, 1.9 A). Because SN 1987A is
brightening at an accelerating rate we will obtain several hundred counts in
individual line-images, e.g., Si XIII and Ne X lines. To maximize the science
value of these data, we are teaming on a parallel proposal (McCray, P.I.) to
obtain a similarly deep LETG/ACIS data set. With the full set of deep line-images
- over a range of 5 in dispersion and a a range of ~4 in wavelength - we can do
detailed fitting of spatial-velocity-ionization models of SN 1987A.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
05:35:28.00 -69:16:11.00 Sn 1987A ACIS-S HETG 50.0000
05:35:28.00 -69:16:11.00 Sn 1987A ACIS-S HETG 160.0000
05:35:28.00 -69:16:11.00 Sn 1987A ACIS-S HETG 160.0000
==========================================================================================
Proposal Number: 08500067
Proposal Title: Chandra Search for Young Neutron Stars
PI: Stephen Murray
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We propose a search for young, active neutron stars, their nebulae, and
associated supernova remnants based on a list of candidate sources whose emission
in other wavelength bands is consistent with such an origin.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
16:40:47.60 -46:31:60.00 HESS J1640-465 ACIS-I NONE 30.0000
==========================================================================================
Proposal Number: 08500140
Proposal Title: The Puzzling Pulsar-Wind Nebula of the Geminga Pulsar
PI: George Pavlov
Subject Category: SN, SNR AND ISOLATED NS
Abstract: XMM and Chandra observations have shown a unique structure around the
Geminga pulsar. The XMM images show two 2'-long, patchy tails extended in the
direction opposite to the pulsar's proper motion. Our observation with Chandra
ACIS revealed a 20''-long axial tail behind the moving pulsar and an arc-like
structure 5''-7'' ahead of the pulsar. The tail could be a pulsar jet or a
shocked pulsar wind confined by the ram pressure of the oncoming medium. The arc
could be the head of a bow shock or a torus of the shocked equatorial pulsar
wind. In the shallow ACIS image there is no clear connection between these
small-scale structures and the long tails seen in the XMM images. The proposed
deep observation will establish this connection and allow us to understand the
nature of the whole nebula.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
06:33:54.20 +17:46:12.90 Geminga ACIS-I NONE 80.0000
==========================================================================================
Proposal Number: 08500177
Proposal Title: Can We Observe the SGR to AXP Transition in Real Time?
PI: C. Wilson
Subject Category: SN, SNR AND ISOLATED NS
Abstract: Soft Gamma Repeaters (SGRs) and Anomalous X-ray Pulsars (AXPs) are both
believed to be magnetars powered by the decay of their strong magnetic fields.
Within the last 8 years, giant flares have been recorded from two Soft Gamma
Repeaters, SGR 1900+14 and SGR 1806-20. During these flares, the external field
is significantly altered creating measureable changes in the persistent X-ray
flux, energy spectrum and burst activity. These changes point toward a reduction
in magnetospheric currents that may hasten the transition from an SGR-like state
to an AXP-like state on a time scale of years. Here, we propose to observe each
of these SGRs to monitor this transition and constrain the physical impact of
giant flares on the underlying X-ray source and probe the flare mechanism
itself.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
19:07:14.30 +09:19:20.10 SGR 1900+14 ACIS-S NONE 12.5000
19:07:14.30 +09:19:20.10 SGR 1900+14 ACIS-S NONE 12.5000
==========================================================================================
Proposal Number: 08500205
Proposal Title: New Developments from the Transient AXP XTE J1810-197
PI: JULES HALPERN
Subject Category: SN, SNR AND ISOLATED NS
Abstract: The 5.5 s pulsar XTE J1810-197 is the first confirmed Transient
Anomalous X-ray Pulsar (TAXP). It has been fading steadily since its only known
outburst in 2003. Archival data spanning 25 yr indicates that this is likely a
one-time event. Monitoring of its complex spectrum and pulse profiles during the
decay is revealing a wealth of information about emission mechanisms and geometry
of a magnetar. Surprising radio brightening, 1-3 years after outburst, is unique
to this AXP, and suggests either an expanding nebula or transient radio bursts.
During AO8, we expect the X-ray spectrum and pulse modulation to change markedly
as the source returns to its quiescent state. We propose to follow its flux,
spin, and spectral evolution, and search for a radio and X-ray nebula.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
18:09:51.10 -19:43:51.70 XTE J1810-197 ACIS-S NONE 30.0000
==========================================================================================
Proposal Number: 08500247
Proposal Title: ToO Observations of Isolated Neutron Stars
PI: Peter Woods
Subject Category: SN, SNR AND ISOLATED NS
Abstract: Phase-coherent timing solutions for two Isolated Neutron Stars (INSs)
were recently established and the inferred magnetic field strengths are
intermediate between ordinary radio pulsars and magnetars. Interestingly, strong
timing noise, spectral variability, and pulse morphology changes were observed in
RX J0720.4-3125 -- characteristics commonly seen in magnetars. Given the strong
timing noise seen in this object, there is a reasonable expectation that it may
glitch. Transient flux variability may also be seen if the X-ray emission is
powered by magnetic dissipation. Here, we propose a sequence of ToO observations
should either source glitch or change brightness by more than 50%. These
observations will allow us to establish a new timing solution and/or quantify
spectral changes.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
07:20:25.00 -31:25:49.60 RX J0720.4-3125 ACIS-S NONE 5.0000
07:20:25.00 -31:25:49.60 RX J0720.4-3125 ACIS-S NONE 5.0000
07:20:25.00 -31:25:49.60 RX J0720.4-3125 ACIS-S NONE 5.0000
07:20:25.00 -31:25:49.60 RX J0720.4-3125 ACIS-S NONE 10.0000
13:08:48.30 +21:27:06.80 RX J1308.6+2127 ACIS-S NONE 5.0000
13:08:48.30 +21:27:06.80 RX J1308.6+2127 ACIS-S NONE 5.0000
13:08:48.30 +21:27:06.80 RX J1308.6+2127 ACIS-S NONE 5.0000
13:08:48.30 +21:27:06.80 RX J1308.6+2127 ACIS-S NONE 10.0000
==========================================================================================
Proposal Number: 08500282
Proposal Title: Complex PWN Torus and Jets from a Gamma-ray Pulsar
PI: Roger Romani
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We propose a deep ACIS image of the PWN discovered around PSR
J2021+3651 in a short AO4 observation. The nebula of this energetic pulsar is
interesting as it seems to show the complex `double torus' structure only
previously seen clearly around Vela. The pulsar itself is also interesting as it
is a probable gamma-ray source, yet the large radio pulsar DM distance implies an
enormous efficiency. The proposed deep imaging campaign addresses these issues,
allowing both geometrical and spectral tests of the pulsar distance and measuring
the PWN equatorial tori and jets in sufficient detail to allow comparison with
pulsar wind models.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
20:21:04.50 +36:51:27.00 PSR J2021+3651 ACIS-S NONE 100.0000
==========================================================================================
Proposal Number: 08500333
Proposal Title: CHANDRA OBSERVATIONS OF YOUNG ENERGETIC SUPERNOVAE
PI: David Pooley
Subject Category: SN, SNR AND ISOLATED NS
Abstract: In the entire history of X-ray astronomy, only about two dozen
core-collapse supernovae (SNe) have been detected at ages of days to years old.
Of these, only a handful have been well-followed temporally. Few general trends
have emerged, and there is a clear need for better X-ray coverage at ages of
~years. Two SN subclasses stand out as deserving of particular attention, namely,
the type Ic SNe, which have been associated with long-duration gamma-ray bursts,
and the type IIn SNe, which are very poorly understood but have the highest X-ray
luminosities seen in SNe. We propose observations of a number of interesting SNe
of these subclasses at ages between one and five years.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:41:26.80 +25:29:51.60 SN 2005db ACIS-S NONE 3.0000
03:21:39.70 +16:52:01.80 SN 2006aj ACIS-S NONE 20.0000
04:10:59.40 -31:24:50.30 SN 2003bg ACIS-S NONE 35.0000
11:27:29.70 +56:52:48.20 SN 2004C ACIS-S NONE 60.0000
13:50:25.00 +68:33:19.40 SN 2005bx ACIS-S NONE 13.0000
21:42:23.70 +12:29:50.90 SN 2001em ACIS-S NONE 5.0000
==========================================================================================
Proposal Number: 08500339
Proposal Title: Astrometric Study of Isolated Neutron Stars
PI: Christian Motch
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We propose to take advantage of the excellent imaging performance of
Chandra to measure the proper motion of the X-ray bright and radio-quiet isolated
neutron star RX J1308.6+2127 with the goal to constrain its space velocity, birth
place and age. The five year time interval between the proposed Cycle 8 and
former Cycle 3 observations obtained by our group will provide a very sensitive
measurement.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
13:08:48.20 +21:27:06.80 RX J1308.6+2127 ACIS-I NONE 20.0000
==========================================================================================
Proposal Number: 08500365
Proposal Title: ToO Observations of Soft Gamma Repeaters
PI: Peter Woods
Subject Category: SN, SNR AND ISOLATED NS
Abstract: Soft Gamma Repeaters are rare sources of transient burst emission,
probably magnetars (i.e. strongly magnetized neutron stars). Each of the SGRs has
a persistent X-ray counterpart and some show coherent pulsations. During burst
active phases, these counterparts undergo changes in their energy spectrum and
pulse properties. Measuring the effects of burst activity are diagnostic of the
burst mechanism and SGRs in general. In the event of detection of substantial
burst activity from an SGR, we propose to make Chandra ToO observations of any of
the four known sources, SGR 1900+14, SGR 1806-20, SGR 1627-41, SGR 0526-66, the
SGR candidate SGR 1801-23, as well as any newly discovered SGR source.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
NEW SGR ACIS-I NONE 5.0000
NEW SGR ACIS-S NONE 40.0000
05:26:01.10 -66:04:38.00 SGR 0526-66 ACIS-S NONE 40.0000
16:35:51.80 -47:35:23.30 SGR 1627-41 ACIS-S NONE 40.0000
18:00:58.90 -22:56:48.50 SGR 1801-23 ACIS-S NONE 40.0000
18:08:39.30 -20:24:39.50 SGR 1806-20 ACIS-S NONE 40.0000
19:07:14.30 +09:19:20.10 SGR 1900+14 ACIS-S NONE 40.0000
==========================================================================================
Proposal Number: 08500437
Proposal Title: X-rays from the unusual relativistic binary J1906+0746
PI: Oleg Kargaltsev
Subject Category: SN, SNR AND ISOLATED NS
Abstract: PSR J1906+0746 is a recently discovered pulsar in a tight binary
(orbital period 3.98 hours) where the second component is either a heavy WD or a
NS. The binary is unique because PSR J1906+0746 is young and energetic compared
to the pulsars in other tight NS-NS or NS-WD binaries. It has been suggested that
in such binaries the interaction between the pulsar wind and the companion can
significantly enchance X-ray emission and result in variability with orbital
phase. J1906+0746 is an ideal system for testing this hypothesis. We propose an
exploratory observation to measure the fluxes of different emission components,
resolve the extended PWN and search for variability with orbital phase.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
19:06:48.70 +07:46:28.60 PSRJ1906+0746 ACIS-I NONE 32.0000
==========================================================================================
Proposal Number: 08500515
Proposal Title: A search for fast periodicity in the enigmatic X-ray source
inside RCW103.
PI: Andrea De Luca
Subject Category: SN, SNR AND ISOLATED NS
Abstract: 1E161348-5055 is a compact, radio-quiet X-ray source lying at the
center of the 2000-year old supernova remnant RCW103. Its original identification
as an isolated neutron star was questioned in recent years by the detection of
long-term flux variations. A very recent, long XMM-Newton observation performed
in August 2005 by our group led to the unambiguous evidence of a 6.67 hours
periodicity, settling the case for a unique phenomenology. 1E161348-5055 cannot
be easily identified with any currently known class of X-ray sources. Here we ask
for an 80 ks observation with Chandra/HRC-S in Timing mode. The unique
combination of angular and time resolution will allow to perform the first
sensitive search for fast (P<20 ms) pulsations from the source, a search only
possible with Chandra.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
16:17:36.20 -51:02:25.00 1E 161348-5055 HRC-S NONE 80.0000
==========================================================================================
Proposal Number: 08500520
Proposal Title: SPATIALLY RESOLVED LETG SPECTROMETRY OF SNR1987A
PI: Richard McCray
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We will obtain a spatially resolved LETG spectrum of the newborn
supernova remnant SNR1987A. This observation will complement a 270 ks GTO
observation of SNR1987A with the HETG. The proposed observations will provide
spatial information to interpret the HETG observations and will measure the
spectrum at wavelengths > 15 A where the HETG lacks sensitivity. With a projected
source > 3 times brighter than it was during our Cycle 5 observation, we will be
able to measure for the first time how the temperature distribution and kinematic
velocity of the shocked gas has changed and how these parameters vary spatially
around the ring-like source. The proposed observation is part of a large
multi-wavelength campaign of observations with Spitzer, HST, and ground-based
observatories.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
05:35:28.00 -69:16:11.10 SNR1987A ACIS-S LETG 140.0000
05:35:28.00 -69:16:11.10 SNR1987A ACIS-S LETG 160.0000
==========================================================================================
Proposal Number: 08500575
Proposal Title: A Search for Jet Breaks in Short Gamma-Ray Bursts
PI: David Burrows
Subject Category: SN, SNR AND ISOLATED NS
Abstract: Understanding the energetics of short GRBs requires knowledge of the
jet beaming factors. Short GRB afterglows are monitored routinely by the Swift
X-ray Telescope (XRT), but the XRT has not clearly detected a jet break from any
short GRB. The implication is that the jet breaks are occurring at late times and
at fluxes below the XRT sensitivity. We propose to trigger Chandra ToOs for two
short GRBs, carefully selected to maximize the chance to detect late jet breaks
with Chandra, as we did in AO7 on GRB 051221A.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
SGRB #1 ACIS-S NONE 33.0000
SGRB #1 ACIS-S NONE 53.0000
SGRB #2 ACIS-S NONE 33.0000
SGRB #2 ACIS-S NONE 53.0000
==========================================================================================
Proposal Number: 08500626
Proposal Title: A Better Mousetrap: Localizing RRATs with Chandra
PI: SHAMIBRATA CHATTERJEE
Subject Category: SN, SNR AND ISOLATED NS
Abstract: Rotating RAdio Transients (or RRATs) are a recently discovered class of
neutron stars with largely unknown properties. Unlike normal pulsars, they do not
show coherent pulsation but instead emit sporadic radio bursts that nevertheless
show evidence for stable rotation. Of the 11 known RRATs, 8 have positions that
are only known to 7 arcmin, inhibiting any follow-up observations. Building on
our serendipitous Chandra detection of an RRAT, we propose to utilize the high
resolution of Chandra to localize a sample of RRATs to sub-arcsecond precision.
By measuring the positions and X-ray characteristics of these objects, we will
place them in the context of the larger neutron star population, and pave the way
for more detailed radio, optical, IR, and X-ray observations.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
08:48:00.00 -43:16:00.00 J0848-43 ACIS-I NONE 10.0000
17:53:60.00 -30:10:60.00 J1754-30 ACIS-I NONE 10.0000
18:26:00.00 -14:26:60.00 J1826-14 ACIS-I NONE 10.0000
18:48:00.00 -12:46:60.00 J1848-12 ACIS-I NONE 10.0000
19:11:00.00 +00:37:00.00 J1911+00 ACIS-I NONE 10.0000
==========================================================================================
Proposal Number: 08500657
Proposal Title: A Star Cluster as a Supernova Factory
PI: Michael Muno
Subject Category: SN, SNR AND ISOLATED NS
Abstract: Massive star clusters are ideal objects for X-ray studies of two
related subjects: the effect of stellar winds and supernovae on the interstellar
medium, and the mapping between the initial masses of stars and the compact
objects that they leave behind. We propose to observe a Galactic star cluster
containing a dozen red supergiants, which implies an age of 6-15 Myr, a mass of
20,000-50,000 Msun, and a supernova rate of at least one per 90,000 years. This
cluster provides a unique opportunity to understand how supernova remnants
interact with a cool cluster wind produced by red supergiants. Chandra
observations will allow us to search for isolated neutron stars and high-mass
X-ray binaries.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
18:39:19.90 -06:01:45.70 RSG Cluster 2 ACIS-I NONE 40.0000
==========================================================================================
Proposal Number: 08500675
Proposal Title: High-Resolution Soft X-ray Spectroscopy of a Gamma-ray Burst
X-ray Afterglow
PI: Masao Sako
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We propose a deep TOO observation of a bright X-ray afterglow of a
gamma-ray burst using the Chandra LETG/ACIS-S. The trigger will be based
primarily on the X-ray flux, which will be monitored with the X-ray Telescope on
board the Swift observatory. An additional constraint on the line-of-sight
Galactic column density will be imposed as well to provide the highest
statistical-quality grating spectrum of a GRB X-ray afterglow. These criteria,
which is based on our detailed study of the currently-available datasets in the
archive, maximizes the chances of detecting and identifying discrete X-ray
features from the circumburst environment, which will provide us with important
clues about the nature of the progenitor.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
Swift GRB TOO ACIS-S LETG 120.0000
==========================================================================================
Proposal Number: 08500680
Proposal Title: Nailing Down the Broadband Properties of a Short GRB with the
help of Chandra
PI: Nathaniel Butler
Subject Category: SN, SNR AND ISOLATED NS
Abstract: Understanding of the origin and nature of short/hard Gamma-ray bursts
(SHBs) is one of the last frontiers of GRB research. We propose a 3 epoch ToO
observations of one SHB, as part of a broadband followup campaign. We hope to
decisively answer the following questions: Do the afterglows of SHBs arise from
external shocks? What are the explosion energy, external density, and
micro-physical parameters? In what environments do SHBs occur, galaxy clusters?
Are the afterglows isotropic, and what is the SHB rate? What drives the X-ray
flaring, which apparently occurs many dynamical timescales after a putative
compact object merger? These observations complement (but do not duplicate) a
joint Chandra/Spitzer ToO observation of one SHB, proposed in the 3rd GO Spitzer
round.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
Short /hard GRB ACIS-S NONE 10.0000
Short /hard GRB ACIS-S NONE 20.0000
Short /hard GRB ACIS-S NONE 20.0000
==========================================================================================
Proposal Number: 08500683
Proposal Title: The Proper Motion of Supernova Remnant E0509-67.5
PI: John Hughes
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We propose to measure independently the proper motion expansions of the
ejecta and forward shock in E0509-67.5. The metal-enriched reverse-shock-heated
ejecta emits only in X-rays, while the forward shock is traced to high precision
by H alpha emission. The proposed measurements require the unique high resolution
imaging capabilities of Chandra and Hubble. The optical (forward shock) and X-ray
(ejecta) results will yield important constraints on the remnant's evolutionary
state; we will search in particular for evidence of cosmic-ray modified dynamics.
An important component of this project is an integrated theoretical investigation
using realistic models of SN Ia explosions evolved to the remnant stage.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
05:09:31.90 -67:31:17.00 0509-67.5 ACIS-S NONE 63.0000
==========================================================================================
Proposal Number: 08500693
Proposal Title: Chandra Monitoring of SNR 1987A in AO8
PI: David Burrows
Subject Category: SN, SNR AND ISOLATED NS
Abstract: SNR1987A provides a unique opportunity to study the development of a
young supernova remnant at high resolution. We have monitored SN/SNR1987A at
roughly six month intervals since October 1999. The remnant is expanding and is
increasing exponentially in X-ray brightness. We propose to continue this
monitoring program with two additional observations in AO8, spaced six months
apart. The remnant is now bright enough that these observations will permit
spatially-resolved spectra in addition to monitoring the expansion (which has
recently begun to slow) and the development of new X-ray hot spots. We will also
continue our search for a compact central object, which may become visible in the
near future as the ejecta become optically thin.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
05:35:28.00 -69:16:11.10 SNR 1987A ACIS-S NONE 31.0000
05:35:28.00 -69:16:11.10 SNR 1987A ACIS-S NONE 38.0000
==========================================================================================
Proposal Number: 08500718
Proposal Title: G266.2-1.2: Uncovering the Nature of the South Rim
PI: Paul Plucinsky
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We propose a deep Chandra pointing at the south rim of the Galactic
supernova remnant G266.2-1.2. This Chandra observation will resolve the structure
of a nonthermal filament and also explore the morphology of a diffuse feature
which is apparently over-abundant in O, Ne, and Mg. We will compare this
high-resolution image to the nonthermal filament in the NW rim. We will determine
the upstream and downstream scale widths of the filament from the image and
determine the cut-off frequency of the synchrotron emission from the spectra.
These values will then be interpreted in the context of the Diffuse Shock
Acceleration models to constrain the amplification of the magnetic field, the
cosmic ray acceleration efficiency, and the maximum energy of the particles.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
08:53:17.00 -47:20:06.00 G266.2-1.2 South ACIS-S NONE 60.0000
==========================================================================================
Proposal Number: 08500758
Proposal Title: A Deep Chandra Observation of the Tycho Supernova Remnant
PI: John Hughes
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We propose to obtain a very deep observation of the Tycho supernova
remnant. Our observational goals include measuring the angular expansion of the
forward shock and contact discontinuity, investigating the nature and origin of
Fe-rich ejecta knots, and studying the spectral structure of the forward shock.
For the expansion measurement we will compare to an existing Chandra observation
taken in cycle 4 that was specifically optimized for subsequent expansion
measurements. Tycho is the ideal remnant for studies of cosmic-ray modified
dynamics and investigating key features of Type Ia supernova physics.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:25:19.00 +64:08:10.00 Tycho's SNR ACIS-I NONE 150.0000
==========================================================================================
Proposal Number: 08500775
Proposal Title: FURTHER IMAGING OF RPWN IN VARIABLE GAMMA-RAY ERROR BOXES
PI: Mallory Roberts
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We propose to obtain deeper images of two pulsar wind nebulae
coincident with variable gamma-ray sources. Short, exploratory observations of
these sources with Chandra, along with their radio properties, suggest they are
RPWN with possible forward bow-shocks seen in X-rays. These new observations will
determine the fine structure of the nebulae, allow meaningful spectral
constraints on sub-components, and provide baseline images for future variability
studies concurrent with gamma-ray observations by AGILE and GLAST.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
14:18:39.80 -60:57:56.00 Rabbit ACIS-I NONE 75.0000
18:26:08.40 -12:56:38.00 3EG J1826-1302 ACIS-I NONE 75.0000
==========================================================================================
Proposal Number: 08500791
Proposal Title: An expansion measurement of RCW 86: is it the remnant of SN185?
PI: Jacco Vink
Subject Category: SN, SNR AND ISOLATED NS
Abstract: RCW 86 is one of a few SNRs emitting X-ray synchrotron radiation. This
is surprising, given that shock velocities have been measured of only V~600 km/s.
For those velocities standard shock acceleration theory does not predict X-ray
synchrotron radiation. Based on a previous Chandra observation we argue that in
regions with X-ray synchrotron radiation the shock speed is higher (V~3000 km/s),
and that large differences in velocities are caused by an evolution inside a wind
blown bubble: parts of the SNR inside the bubble still have a high shock
velocity, whereas the bright parts are where the shock has reached the bubble
shell. Interestingly, this would make the age of RCW 86 consistent with an
explosion in AD185. We propose a 75ks observation for directly measuring the
expansion.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
14:45:02.30 -62:20:32.00 RCW 86 NE ACIS-S NONE 75.0000
==========================================================================================
Proposal Number: 08500956
Proposal Title: In-depth Study of the Nearest Engine-Driven Cosmic Explosions
PI: Shrinivas Kulkarni
Subject Category: SN, SNR AND ISOLATED NS
Abstract: Just a decade ago, astronomers thought stellar collapse was primarily a
spherical process. Gamma-ray bursts, with their powerful jets (powered by a
central engine) and at the same time a spherical explosion (supernova) have upset
this paradigm. Empirically there appears to be a wide range in the energy of the
spherical explosion and the jets. This opens up the possibility that the
spherical+engine framework is the correct paradigm for all explosions. Here we
propose an in-depth study of the nearest core-collapse events which show evidence
for a central engine (e.g. SN 1998bw and the nearest GRBs). Our synergistic
multi-wavelength effort (radio, optical and proposed Chandra observations) are
designed to study both the spherical and the jet components under this
framework.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
Target1 ACIS-S NONE 20.0000
Target1 ACIS-S NONE 40.0000
==========================================================================================
Proposal Number: 08500961
Proposal Title: Searching for X-ray variability in Rotating Radio Transients
PI: Nanda Rea
Subject Category: SN, SNR AND ISOLATED NS
Abstract: RRATs are a recently found class of probable neutron stars
characterised by highly energetic transient radio bursts. Our group recently
discovered the first counterpart of one of these sources: RRAT 1819-1458. With
the present proposal we ask for a Chandra observation of this X-ray counterpart
in order to search for possible flux and spectral variability to shed more light
on the nature of this new puzzling class of objects. Furthermore we want to
search for possible extended X-ray emission around the source.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
18:19:33.00 -14:58:16.00 RRAT J1819-1458 ACIS-S NONE 30.0000
==========================================================================================
Proposal Number: 08501008
Proposal Title: Probing the Relativistic Winds of Millisecond Pulsars
PI: Zaven Arzoumanian
Subject Category: SN, SNR AND ISOLATED NS
Abstract: We propose to observe three millisecond radio pulsars to search for
X-ray-bright "tails" or other nebulosity arising from the interaction of the
pulsar winds with the ambient medium. Our proposed observation, while doubling
the number of MSPs observed with Chandra, will provide new insights into the
nature of winds from recycled neutron stars, the energetics and magnetic
structure of MSP magnetospheres, and their role in sculpting the interstellar
medium.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:44:29.30 -11:34:54.60 PSR J1744-1134 ACIS-S NONE 65.0000
==========================================================================================
Proposal Number: 08501014
Proposal Title: Tiny Hiccups To Titanic Explosions: Tackling Transients in
Anomalous X-ray Pulsars
PI: Victoria Kaspi
Subject Category: SN, SNR AND ISOLATED NS
Abstract: Recently discovered transient events in Anomalous X-ray Pulsars (AXPs)
may be a Rosetta Stone for understanding the persistent emission from magnetars.
They also may hold the key to quantifying the number of magnetars in the Galaxy.
Here we request Chandra TOO time to observe any AXP following a rare transient
event, including a major outburst or a long-duration flare. Specifically, the
requested observations will determine the pulsed fraction and spectral evolution
of a transient AXP event as the source relaxes back to quiescence, in order to
quantitatively test the "twisted magnetosphere" model for magnetars, and
establish the basic phenomenology of transient AXP events.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
New AXP ACIS-S NONE 20.0000
New AXP ACIS-S NONE 20.0000
New AXP ACIS-S NONE 20.0000
New AXP ACIS-S NONE 20.0000
01:00:43.10 -72:11:33.80 CXOU J0110043.1-7211 ACIS-S NONE 20.0000
01:00:43.10 -72:11:33.80 CXOU J0110043.1-7211 ACIS-S NONE 20.0000
01:00:43.10 -72:11:33.80 CXOU J0110043.1-7211 ACIS-S NONE 20.0000
01:00:43.10 -72:11:33.80 CXOU J0110043.1-7211 ACIS-S NONE 20.0000
01:46:22.30 +61:45:07.00 4U 0142+61 ACIS-S NONE 20.0000
01:46:22.30 +61:45:07.00 4U 0142+61 ACIS-S NONE 20.0000
01:46:22.30 +61:45:07.00 4U 0142+61 ACIS-S NONE 20.0000
01:46:22.30 +61:45:07.00 4U 0142+61 ACIS-S NONE 20.0000
10:50:07.10 -59:53:21.40 XTE J1810-197 ACIS-S NONE 20.0000
10:50:07.10 -59:53:21.40 XTE J1810-197 ACIS-S NONE 20.0000
10:50:07.10 -59:53:21.40 XTE J1810-197 ACIS-S NONE 20.0000
10:50:07.10 -59:53:21.40 XTE J1810-197 ACIS-S NONE 20.0000
10:50:08.90 -59:53:20.40 1E 1048.1-5937 ACIS-S NONE 20.0000
10:50:08.90 -59:53:20.40 1E 1048.1-5937 ACIS-S NONE 20.0000
10:50:08.90 -59:53:20.40 1E 1048.1-5937 ACIS-S NONE 20.0000
10:50:08.90 -59:53:20.40 1E 1048.1-5937 ACIS-S NONE 20.0000
17:08:47.20 -40:08:50.70 RXS 1708-4009 ACIS-S NONE 20.0000
17:08:47.20 -40:08:50.70 RXS 1708-4009 ACIS-S NONE 20.0000
17:08:47.20 -40:08:50.70 RXS 1708-4009 ACIS-S NONE 20.0000
17:08:47.20 -40:08:50.70 RXS 1708-4009 ACIS-S NONE 20.0000
18:41:19.20 -04:56:12.50 1E 1841-045 ACIS-S NONE 20.0000
18:41:19.20 -04:56:12.50 1E 1841-045 ACIS-S NONE 20.0000
18:41:19.20 -04:56:12.50 1E 1841-045 ACIS-S NONE 20.0000
18:41:19.20 -04:56:12.50 1E 1841-045 ACIS-S NONE 20.0000
18:44:53.00 -02:56:40.00 AX J1845-0258 ACIS-S NONE 20.0000
18:44:53.00 -02:56:40.00 AX J1845-0258 ACIS-S NONE 20.0000
18:44:53.00 -02:56:40.00 AX J1845-0258 ACIS-S NONE 20.0000
18:44:53.00 -02:56:40.00 AX J1845-0258 ACIS-S NONE 20.0000
23:01:07.90 +58:52:46.00 1E 2259+586 ACIS-S NONE 20.0000
23:01:07.90 +58:52:46.00 1E 2259+586 ACIS-S NONE 20.0000
23:01:07.90 +58:52:46.00 1E 2259+586 ACIS-S NONE 20.0000
23:01:07.90 +58:52:46.00 1E 2259+586 ACIS-S NONE 20.0000
******************************************************************************************
NORMAL GALAXIES: DIFFUSE EMISSION
******************************************************************************************
==========================================================================================
Proposal Number: 08610011
Proposal Title: Compact Galaxy Groups: Building Blocks of Galaxy Clusters and
Massive Ellipticals
PI: Gordon Garmire
Subject Category: NORMAL GALAXIES: DIFFUSE EMISSION
Abstract: The first galaxies and their environments differed substantially from
those locally, with multiple interactions influencing their histories. Compared
to all other nearby environments, present-day compact galaxy groups most closely
reproduce conditions in the earlier universe (z~4) when galaxies assembled
through hierarchical formation, and galaxy groups combined to form proto-clusters
(in dense regions) or massive ellipticals (in the field). We propose senstitive
Chandra observations of a nearby sample of compact groups. This study will enable
penetrating investigations into the general X-ray properties of quiescent,
active, and interacting galaxies locally.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:39:23.90 +00:52:41.00 HCG 7 ACIS-S NONE 39.0000
03:03:31.00 -15:38:41.00 HCG 22 ACIS-S NONE 32.0000
==========================================================================================
Proposal Number: 08610215
Proposal Title: The Galactic Generation-X: The First Study of the X-ray
Properties of Massive E+A Galaxies
PI: Adrienne Juett
Subject Category: NORMAL GALAXIES: DIFFUSE EMISSION
Abstract: We propose Chandra observations of 11 E+A galaxies from SDSS to detect
X-ray emission from intermediate-mass X-ray binaries (IMXBs) and hot gas. E+As
contain a young stellar population, but with no O or B stars. IMXBs are NSs or
BHs accreting from a 2-5 M_Sun donor. During their active phase, a
super-Eddington mass-transfer rate is expected. We expect 10-1000 bright
IMXBs/galaxy. We will measure the X-ray flux to detect the IMXB contribution, and
constrain IMXB formation. Detection of hot gas will study the regeneration of
X-ray halos in typical early-type galaxies. Post-merger remnants are deficient in
gas compared to early-type galaxies. E+As are an intermediate stage between
merger remnants and early-type galaxies. X-ray studies of E+As will measure the
gas accumulation rate.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
09:03:32.80 +01:12:36.40 SDSSJ090332.77+01123 ACIS-S NONE 20.0000
22:55:06.80 +00:58:39.90 SDSSJ225506.79+00583 ACIS-S NONE 30.0000
==========================================================================================
Proposal Number: 08610240
Proposal Title: Reionizing the Universe: The Case of Haro 11
PI: John Grimes
Subject Category: NORMAL GALAXIES: DIFFUSE EMISSION
Abstract: An early generation of star forming galaxies is thought to have
reionized the universe. However, we do not have a good understanding of how (or
how much) ionizing radiation is able to escape from galaxies. Supernovae-driven
galactic winds are believed to play a vital role by clearing paths through the
gas surrounding a galaxy. This process can only be studied in detail in local
galaxies. Haro 11 is the only known local galaxy with escaping ionizing
radiation, and is one of the two closest examples of a class of UV-luminous
galaxies whose overall properties strongly resemble high-z Lyman Break Galaxies.
We propose to obtain Chandra observations of Haro 11 to map the hot gas in its
wind, and thereby determine how the wind has facilitated the escape of ionizing
radiation.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:36:52.50 -33:33:19.00 Haro 11 ACIS-S NONE 60.0000
==========================================================================================
Proposal Number: 08610308
Proposal Title: Measuring the Dust-to-gas Ratio of High Redshift Galaxies
PI: Xinyu Dai
Subject Category: NORMAL GALAXIES: DIFFUSE EMISSION
Abstract: We propose to observe the differential X-ray absorption in two
gravitational lenses with significant optical extinctions. By combining the X-ray
and optical differential absorption measurements, we will accurately measure the
dust-to-gas ratio of the two cosmologically distant lens galaxies. Combining
these new measurements with four earlier measurements, we will test whether the
dust-to-gas ratio evolves with redshift as predicted by simulations of dust
formation and evolution. Such information is to understanding galaxy and star
formation and evolution in the presence of an absorbing ISM.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
09:13:01.10 +52:59:28.80 SBS0909+523 ACIS-S NONE 20.0000
09:51:22.60 +26:35:14.10 FBQ0951+2635 ACIS-S NONE 35.0000
==========================================================================================
Proposal Number: 08610309
Proposal Title: X-ray thermal coronae of early-type galaxies in hot clusters
PI: Ming Sun
Subject Category: NORMAL GALAXIES: DIFFUSE EMISSION
Abstract: Our cycle-7 archive project to study X-ray thermal coronae in nearby
hot clusters has resulted in the discovery of more than 80 new coronae in 0.1 -
14 L* cluster galaxies. Relevant important physics, e.g., heat conduction,
viscosity, SN heating and AGN feedback, can be constrained from the studies of
these embedded mini-cooling cores. We propose follow-up on-axis observations of
two luminous coronae (with the highest observed flux in our sample) and one faint
corona to further understand: 1) The internal structure and energy balance of the
embedded coronae (in unprecedented detail); 2) The X-ray faint coronae of massive
galaxies; 3) Corona cooling and SMBH activity.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:50:03.90 -41:22:57.00 NGC 4709 ACIS-S NONE 30.0000
16:15:03.80 -60:54:25.20 ESO 137-006 ACIS-S NONE 60.0000
16:17:19.90 +34:54:05.00 NGC 6107 ACIS-S NONE 20.0000
==========================================================================================
Proposal Number: 08610492
Proposal Title: Supernova feedback efficiency and the hot wind from NGC 3125
PI: David Strickland
Subject Category: NORMAL GALAXIES: DIFFUSE EMISSION
Abstract: We propose to observe the starbursting dwarf galaxy NGC 3125 as part of
a larger multi-wavelength project aiming to determine the energy efficiency of
supernova feedback as a function of star formation intensity (SFI) and host
galaxy mass (M). NGC 3125 occupies a particularly important region of the SFI/M
parameter space, having a similar mass but much higher SFI than the dwarf
starbursts previously observed with Chandra. ACIS-S observations will determine
the radiative energy losses, mass cooling rate, temperature, abundance ratios and
extent of hot X-ray emitting plasma in what we expect to be a vigorous superwind.
These observations will complement proposed Cycle 15 HST ACS+WFPC2 observations
of warm ionized gas, yielding a complete view of feedback radiative energy
losses.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
10:06:33.30 -29:56:07.00 NGC 3125 ACIS-S NONE 60.0000
==========================================================================================
Proposal Number: 08610643
Proposal Title: Resolving the Problem of Stellar Orbital Anisotropy
PI: Philip Humphrey
Subject Category: NORMAL GALAXIES: DIFFUSE EMISSION
Abstract: Mass profiles of elliptical galaxies provide an insight into dark
matter (DM) halo formation, while orbital structure is tied to evolutionary
history. Unfortunately the mass-anisotropy degeneracy prevents either from being
uniquely determined by stellar kinematics measurements alone. A recent
controversy suggesting no DM in elliptical galaxies may be explained by this
effect, illustrating the urgent need for better constraints. We propose a 75ks
Chandra exposure of NGC4649 to break this degeneracy in a carefully-chosen
galaxy. Combined with our deep optical spectra and PN and GC kinematics, this
will provide definitive constraints on the mass and orbital anisotropy profiles.
By combining all techniques for one galaxy, this will provide a textbook example
of how to overcome the degeneracy.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:43:39.60 +11:33:09.40 NGC 4649 ACIS-S NONE 75.0000
******************************************************************************************
NORMAL GALAXIES: X-RAY POPULATIONS
******************************************************************************************
==========================================================================================
Proposal Number: 08620043
Proposal Title: Continued M31 Monitoring for Black Hole X-ray Nova
PI: Stephen Murray
Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS
Abstract: During A01-6 we found >12 Black Hole X-ray Novae (BHXN) in M31 using
Chandra, and with HST followup have estimated orbital periods for 6 of these. Our
AO7 program plans to double this number in order to yield a statistically
meaningful orbital period distribution. We propose to continue this program,
concentrating our scarce HST resources on a single transient which exceeds the NS
Eddington limit. Only uninterrupted monitoring can yield the duty cycles and
long-term lightcurves of BHXN (and other variables) in M31. Our GO+GTO programs
have accumulated 574ks (ACIS+HRC) near the M31 bulge, and total Chandra exposure
on M31 is now 814ks. By continuing our monitoring program through AO10 we will
reach ~750ks on the bulge and >1Msec total Chandra M31 exposure.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:42:44.40 +41:16:08.30 M31 ACIS-I NONE 5.0000
00:42:44.40 +41:16:08.30 M31 ACIS-I NONE 5.0000
00:42:44.40 +41:16:08.30 M31 ACIS-I NONE 5.0000
00:42:44.40 +41:16:08.30 M31 ACIS-I NONE 5.0000
00:42:44.40 +41:16:08.30 M31 ACIS-I NONE 5.0000
==========================================================================================
Proposal Number: 08620054
Proposal Title: NGC4848: Telltale of the stripping in the coma cluster
PI: Peter Predehl
Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS
Abstract: We propose to resolve the diffuse emission of a spiral galaxy NGC4848,
which is undergoing ram pressure stripping in the Coma cluster. Previous
observations of the HI content agree well with the X-ray results on stripping,
yet disagree on the details, such as gas distribution in the tail of NG4848, as
well as the extent of the emmission within the galaxy. The spatial scale of the
comparison requires spatial resolution superseding 10". These proposed
observations should achieve it.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:58:05.50 +28:14:33.00 NGC4848 ACIS-S NONE 30.0000
==========================================================================================
Proposal Number: 08620086
Proposal Title: Searching for X-Ray Pulsars in M82
PI: Philip Kaaret
Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS
Abstract: Starburst galaxies offer excellent sites to search for extremely young
stellar objects. Here, we propose to use the high resolution and large collecting
area of Chandra to search for pulsations from x-ray sources in M82. These
observations should lead to unambiguous identification of very luminous accreting
x-ray pulsars and may permit discovery of extremely young rotation-powered
pulsars.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
09:55:52.20 +69:40:46.90 M82 HRC-S NONE 150.0000
==========================================================================================
Proposal Number: 08620116
Proposal Title: A State Transition of the Ultraluminous X-Ray Source in M82
PI: Philip Kaaret
Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS
Abstract: Ultraluminous X-ray sources (ULXs) are bright, non-nuclear X-ray
sources in external galaxies. They have been interpreted as microquasars with jet
beamed towards us (microblazars), mechanically beamed stellar-mass accreting
black holes, and intermediate-mass black holes. We have an approved program to
monitor the ULX in M82 with the Rossi X-Ray Timing Explorer. Here, we propose
Chandra observations to be triggered after a state transition by the source to a
high flux state. This will permit us to accurately measure the spectrum of the
source in a high flux state.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
09:55:50.20 +69:40:47.00 M82 ULX ACIS-S NONE 60.0000
==========================================================================================
Proposal Number: 08620494
Proposal Title: Continued M31 Monitoring for Black Hole X-ray Nova
PI: MICHAEL GARCIA
Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS
Abstract: During A01-6 we found >12 Black Hole X-ray Novae (BHXN) in M31 using
Chandra, and with HST followup have estimated orbital periods for 6 of these. Our
AO7 program plans to double this number in order to yield a statistically
meaningful orbital period distribution. We propose to continue this program,
concentrating our scarce HST resources on a single transient which exceeds the NS
Eddington limit. Only uninterrupted monitoring can yield the duty cycles and
long-term lightcurves of BHXN (and other variables) in M31. Our GO+GTO programs
have accumulated ~500ks (ACIS+HRC) near the M31 bulge, and total Chandra exposure
on M31 is now 814ks. By continuing our monitoring program through AO10 we will
reach ~750ks on the bulge and >1Msec total Chandra M31 exposure.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:42:44.40 +41:16:08.30 M31 ACIS-I NONE 5.0000
00:42:44.40 +41:16:08.30 M31 ACIS-I NONE 5.0000
00:42:44.40 +41:16:08.30 M31 ACIS-I NONE 5.0000
00:42:44.40 +41:16:08.30 M31 ACIS-I NONE 5.0000
00:42:44.40 +41:16:08.30 M31 ACIS-I NONE 5.0000
==========================================================================================
Proposal Number: 08620555
Proposal Title: NGC 4190-ULX1: The forgotten ULX
PI: Timothy Roberts
Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS
Abstract: Although it ranks amongst the nearest (at d ~ 3 Mpc) and brightest (fx
~ 2e-12 erg/cm^2/s) ULXs, NGC 4190-ULX1 has not yet been observed in the modern
era of X-ray astronomy. We propose to remedy this omission with three new
observations designed to probe its underlying nature. Firstly, we will obtain a
high precision X-ray position of the ULX using HRC-I. This will be used to
identify an unique counterpart in new HST/ACS imaging, plausibly the first step
towards deriving a dynamical mass function for this source. Finally, we will use
an ACIS-S observation to derive the first high quality X-ray diagnostics
(spectrum, light curve) of this ULX, with the aim of providing an interim
assessment of the nature of the compact object underlying its extreme X-ray
emission.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:13:45.40 +36:37:55.00 NGC 4190-ULX1 HRC-I NONE 25.0000
==========================================================================================
Proposal Number: 08620560
Proposal Title: Searching for Intermediate-Mass Black Holes in Nuclear Star
Clusters
PI: Joseph Shields
Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS
Abstract: We propose ACIS observations of two late-type galaxies that have
compact central star clusters with unusual nebular emission. Nuclear star
clusters are of interest as the possible formation sites for intermediate-mass
"seed" black holes that may be required for the production of supermassive black
holes. The two targets show nuclear emission lines with wings extending to +/-
200 km/s, far greater than the stellar velocity dispersions of approximately 30
km/s for the associated star clusters. Chandra observations will allow us to
identify or place limits on accretion sources in these objects that would signal
the presence of a central black hole.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
06:01:08.00 -23:40:20.00 NGC 2139 ACIS-S NONE 39.0000
==========================================================================================
Proposal Number: 08620639
Proposal Title: Deep Chandra and Hubble Observations of NGC 1023: Testing the
Origin of Low-Mass X-ray Binaries in a Lenticular Galaxy
PI: Gregory Sivakoff
Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS
Abstract: Extragalactic low-mass X-ray binaries (LMXBs) can constrain galaxy
histories, but we must first understand whether LMXBs present in the fields of
galaxies were formed primordially in situ or dynamically in globular clusters
(GCs). We propose 192 ks of ACIS-S observations + 8 orbits of HST-ACS on NGC1023,
one of the nearest, massive lenticular galaxies. We will detect ~120 LMXBs and
~400 stellar clusters. Our comparison of the spatial distributions of
field-LMXBs, GCs, and field stars in NGC1023 will constrain the origin of field
LMXBs. Our observations will also perform the most complete census of diffuse
star clusters (DSCs) to date. By probing the connection of DSCs to LMXBs, we will
also test the dynamical formation model of LMXBs in stellar clusters.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
02:40:24.00 +39:03:47.70 NGC1023 ACIS-S NONE 32.0000
02:40:24.00 +39:03:47.70 NGC1023 ACIS-S NONE 160.0000
==========================================================================================
Proposal Number: 08620970
Proposal Title: Galactic Bulge Latitude Survey-2
PI: Jonathan Grindlay
Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS
Abstract: We propose to extend our Bulge Latitude Survey (BLS) at l ~0deg to b =
0.2-1.5deg to complement the b = -0.2-1.5deg BLS to be done in cycle 7. This will
increase source statistics to measure radial gradients from SgrA* and allow
searches for underlying differences (e.g. embedded clusters) already suspected at
b >0. This full BLS will complement the Bulge Longitude surveys and the deeper
pointed surveys to measure the source content and distribution in the inner
Bulge. Infrared and optical imaging down to the confusion limit will enable a
sensitive search for the counterparts despite varying extinction across the field
and will extend the logN-logS analysis for the deeper Bulge Chandra fields.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:40:07.20 -28:12:01.90 GBW20 ACIS-I NONE 15.0000
17:40:35.60 -28:02:00.80 GBW19 ACIS-I NONE 15.0000
17:40:52.70 -28:18:17.90 GBW21 ACIS-I NONE 15.0000
17:41:22.50 -28:08:11.70 GBW22 ACIS-I NONE 15.0000
17:41:38.30 -28:24:32.90 GBW24 ACIS-I NONE 15.0000
17:42:06.60 -28:14:30.60 GBW23 ACIS-I NONE 15.0000
17:42:24.00 -28:30:47.00 GBW26 ACIS-I NONE 15.0000
17:42:52.30 -28:20:44.00 GBW25 ACIS-I NONE 15.0000
17:43:09.80 -28:37:00.10 GBW28 ACIS-I NONE 15.0000
17:43:38.00 -28:26:56.50 GBW27 ACIS-I NONE 15.0000
17:43:56.50 -28:43:19.60 GBW30 ACIS-I NONE 15.0000
17:44:23.80 -28:33:08.05 GBW29 ACIS-I NONE 15.0000
==========================================================================================
Proposal Number: 08620985
Proposal Title: Massive Star Formation and Energy Feedback in the Starburst
Region N11
PI: You-Hua Chu
Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS
Abstract: The starburst region N11 is the second largest star formation complex
in the LMC. It contains four OB associations distributed in a central superbubble
and dense HII regions along its periphery, indicating sequential star formation.
Spitzer observations have revealed hundreds of massive protostars in N11. The
relatively simple structure of N11 makes it an ideal starburst region for
detailed study. We request a 300 ks ACIS-I observation of N11 to determine the
X-ray properties of point sources and diffuse emission at arcsecond resolution.
This deep observation will allow us to study (1) discrete X-ray source population
and empirical L_x/L_bol, (2) X-ray emission from protostars, (3)
bubbles/superbubbles and stellar energy feedback, and (4) physical structure of a
starburst region.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
04:56:31.50 -66:27:47.00 LHA 120-N 11 ACIS-I NONE 140.0000
04:56:31.50 -66:27:47.00 LHA 120-N 11 ACIS-I NONE 160.0000
******************************************************************************************
ACTIVE GALAXIES AND QUASARS
******************************************************************************************
==========================================================================================
Proposal Number: 08700001
Proposal Title: NGC 3516: Disk Diagnostics from a Windy BLSy1 in a High-State
PI: Tracey Turner
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: Recent advances have shown X-ray flux to be simply correlated with
reflection-signatures from the disk and with an associated wind in AGN. It
appears two things are essential to observe the disk/wind: 1) catch the Seyfert
in a high-state where disk/wind features show up strongly and 2) separate out
reprocessing from distant gas to allow isolation of disk/wind features. NGC 3516
is currently in a very high state, which we predict will lead to observable
features from the disk and its wind. UV data indicate NGC 3516 is very likely to
have an observable disk wind due to a favorable orientation. We request 210 ks
XMM exposure on NGC 3156 with supporting 200 ks Chandra time to test our
prediction of flux-linked disk reflection and wind.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
11:06:47.60 +72:34:08.30 NGC 3516 ACIS-S HETG 40.0000
11:06:47.60 +72:34:08.30 NGC 3516 ACIS-S HETG 160.0000
==========================================================================================
Proposal Number: 08700013
Proposal Title: VIEWS OF QUASAR OUTFLOWS THROUGH NATURAL LENSES
PI: Gordon Garmire
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: Recent Chandra and XMM-Newton observations of BALQSO
APM08279+5255(z=3.91) have detected strong absorption lines in the Fe line region
and imply the presence of a relativistic, energetic and highly ionized outflow.
The proposed Chandra observations will allow us to (a) test the correctness of
the present interpretations of the Fe line features, (b) monitor the time
variability of the Fe absorption features, and (c) constrain the kinematic,
ionization and absorbing properties of the quasar outflow. Evaluating the
importance of quasar outflows to the enrichment of the interstellar and
intergalactic medium even in one quasar will provide important constraints on
understanding the connection between black hole and galaxy growth generally.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
08:31:41.60 +52:45:16.80 APM 08279+5255 ACIS-S NONE 45.0000
08:31:41.60 +52:45:16.80 APM 08279+5255 ACIS-S NONE 45.0000
==========================================================================================
Proposal Number: 08700026
Proposal Title: Monitoring the changing wind of a Seyfert galaxy
PI: Mariano Mendez
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: The bright Seyfert galaxy NGC 5548 has been observed with Chandra and
XMM-Newton during the period 1999-2002. A recent observation in 2005 caught the
source during a long period of low flux. The spectrum shows for the first time a
significant drop of the narrow forbidden O VII emission line, as well as new
lowly ionized components in the warm absorber. We propose to re-observe NGC 5548
with the LETGS for 140 ks. If the source remains in a low state, limits on any
further decrease in ionization will be derived, and the spectrum combined with
the 2005 spectrum allows for a more accurate study of the low state absorber. If
NGC 5548 is in a normal state again, we will see wheter the forbidden O VII
emission line has increased again or not, and whether the lowly ionized
components disappeared.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
14:17:59.60 +25:08:13.40 NGC 5548 HRC-S LETG 141.0000
==========================================================================================
Proposal Number: 08700034
Proposal Title: Search for strongly obscured AGN: support for INTEGRAL all-sky
hard X-ray survey
PI: Stephen Murray
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We are close to a completion of an all-sky hard X-ray survey with
INTEGRAL that will provide unbiased statistics of nearby AGN, including strongly
obscured ones. More than 70 INTEGRAL sources have already been identified with
AGN; 6 of these, all strongly absorbed, were localized and identified with
Chandra. We now propose to observe with Chandra the error boxes of another 13
INTEGRAL sources, candidate obscured AGN. This will help identify the sources,
measure their absorption columns, and complete the INTEGRAL survey.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
08:38:54.70 -48:33:21.60 IGR J08390-4833 ACIS-S NONE 3.5000
09:52:12.20 -62:31:08.40 IGR J09522-6231 ACIS-S NONE 3.5000
14:49:26.90 -55:34:48.00 IGR J14493-5534 ACIS-S NONE 3.5000
14:56:08.90 -37:38:42.00 IGR J14561-3738 ACIS-S NONE 3.5000
21:34:29.30 +47:37:01.20 IGR J21343+4738 ACIS-S NONE 3.5000
23:52:21.10 +58:44:06.00 IGR J23523+5844 ACIS-S NONE 3.5000
==========================================================================================
Proposal Number: 08700049
Proposal Title: NGC 5905: the late phase of the tidal disruption of a star by a
SMBH
PI: Peter Predehl
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose a 75ks Chandra ACIS-S observation of NGC 5905 in order to
follow the long term tidal disruption decline law, and test for the presence of a
faint permanent AGN. The high spatial resolotion of Chandra is essential to reach
the goals of this proposal.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
15:15:23.30 +55:31:01.80 NGC5905 ACIS-S NONE 75.0000
==========================================================================================
Proposal Number: 08700077
Proposal Title: AN X-RAY MICROLENSING TEST OF THE AU-SCALE CENTRAL STRUCTURE OF
THE QUADRUPLE QUASAR 2237+0305
PI: Shin Mineshige
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose Chandra observations of the gravitationally lensed quasar
Q2237+0305 during a microlensing event to reveal its AU scale central structure.
The quasar is being monitored from the ground regularly to ascertain the onset of
the event. As it occurs, we will measure X-ray spectral variations with Chandra
and compare with those taken before and after the event. Since a small region of
the quasar accretion disk is strongly magnified during the event, we will be able
to limit the mass contained on scales of several AUs and to probe the physical
properties of X-ray emitting gas in the vicinity of the black hole. Together with
ground-based telescopes, we can resolve the quasar emission regions at multiple
wavelengths. This provide a critically test of quasar accretion disk theories.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
22:40:30.30 +03:21:31.00 Q2237+0305 (Einstein ACIS-S NONE 20.0000
22:40:30.30 +03:21:31.00 Q2237+0305 (Einstein ACIS-S NONE 20.0000
22:40:30.30 +03:21:31.00 Q2237+0305 (Einstein ACIS-S NONE 20.0000
22:40:30.30 +03:21:31.00 Q2237+0305 (Einstein ACIS-S NONE 20.0000
==========================================================================================
Proposal Number: 08700135
Proposal Title: X-ray Properties of AGNs with Intermediate-mass Black Holes:
Part II
PI: Luis Ho
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: Supermassive (10^6-10^9 solar mass) black holes (BHs) are thought to be
closely linked with the formation and evolution of large galaxies, especially
their bulge component. Can BHs holes form in the absence of a bulge? Does the
mass function of BHs extend below 10^6 solar masses? Intermediate-mass BHs
(10^4-10^6 solar masses) may offer important clues to the nature of the seeds of
supermassive BHs, but while they have been found in a couple of nearby AGNs,
their frequency is unknown. We have used the SDSS to identify a sample of 19 AGNs
powered by intermediate-mass BHs. This is the first and only sample of its kind,
which can be used to explore accretion physics in a new mass regime; we propose
to complete our census of the sample's basic X-ray properties.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
03:25:15.60 +00:34:08.40 SDSS J032515.59+0034 ACIS-S NONE 5.0000
10:11:08.40 +00:29:08.70 SDSS J101108.40 +002 ACIS-S NONE 5.0000
11:51:38.20 +00:49:46.40 SDSS J115138.24+0049 ACIS-S NONE 5.0000
13:57:24.50 +65:25:05.80 SDSS J135724.52+6525 ACIS-S NONE 5.0000
14:12:34.70 +00:34:60.00 SDSS J141234.67-0035 ACIS-S NONE 5.0000
14:45:07.30 +59:36:49.90 SDSS J144507.30+5936 ACIS-S NONE 5.0000
17:02:46.10 +60:28:18.90 SDSS J170246.09+6028 ACIS-S NONE 5.0000
17:27:59.10 +54:21:47.00 SDSS J172759.15+5421 ACIS-S NONE 5.0000
23:21:59.10 +00:07:38.80 SDSS J232159.06+0007 ACIS-S NONE 5.0000
==========================================================================================
Proposal Number: 08700136
Proposal Title: The origin of the iron line complex in the reflection-less
Seyfert 1 galaxy NGC7213
PI: Giorgio Matt
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose to observe with Chandra ACIS-S HETG the Seyfert 1 Galaxy NGC
7213 for 150 ks. The source is without a detectable Compton reflection component,
but has a neutral iron line with EW~80 eV, suggesting an origin in Compton-thin
matter like the BLR. Ionizer iron emission features have also been revealed. The
aim of the proposed observation is twofold: a) to measure in detail the neutral
iron line width and check whether it is consistent with that of the optical broad
lines. b) to confirm the presence of the two ionized lines. To better compare
X-ray and BLR line widths, we propose a coordinated optical spectroscopic
observation of NGC 7213 with the CTIO 4-m.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
22:09:16.20 -47:10:00.00 NGC 7213 ACIS-S HETG 150.0000
==========================================================================================
Proposal Number: 08700160
Proposal Title: Are AGN Quenching the Star Formation in Post-Starburst Galaxies?
PI: Ann Zabludoff
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: The bulge-BH mass relation in galaxies is poorly understood. Our
discovery of low-luminosity AGN in post-starburst, post-merger galaxies suggests
that any rapid growth phase of the AGN has ended roughly with the star formation.
Is this connection between BH and bulge evolution causal, as proposed by a new
crop of merger-induced, AGN-feedback models? Testing these models requires 1)
dating, within the first few 100 Myr, the starburst's age, 2) searching for the
declining AGN in X-rays to limit obscuration, and 3) using high-resolution X-ray
imaging to exclude the starburst's hot gas as the X-ray source. We propose to
look for AGN in four post-merger, post-starburst galaxies whose young stellar
clusters place a tight upper-limit on the time elapsed since the starburst.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
11:01:19.00 -12:10:18.00 EA01 ACIS-I NONE 30.0000
12:09:05.50 -12:22:36.00 EA03 ACIS-I NONE 30.0000
==========================================================================================
Proposal Number: 08700193
Proposal Title: Ionization map of the Seyfert 2 galaxy Mrk 573
PI: Stefano Bianchi
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose to observe the bright Seyfert 2 galaxy Mrk573 with Chandra
ACIS-S for 40 ks, in order to perform X-ray spatially-resolved spectroscopy on
the material responsible for the soft X-ray emission. A detailed ionization map
of the soft X-ray emission of Mrk573 can be obtained with the proposed
observation of 40 ks and can be compared with the ionization map of the NLR.
Mrk573 represents the ideal object for such a kind of analysis, having the
largest NLR among the Seyfert galaxies studied by HST and being a rather bright
obscured AGN in the soft X-rays. Moreover, the detailed analysis of the NLR
available in literature and its correlation with the radio ejecta contribute to
make this object the best choice to investigate the origin of the soft X-ray
emission in obscured AGN.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
01:43:57.80 +02:21:00.00 Mrk573 ACIS-S NONE 40.0000
==========================================================================================
Proposal Number: 08700203
Proposal Title: Probing heavy obscuration in optically selected Type 2 quasar
candidates
PI: Cristian Vignali
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose to double the number of SDSS Type 2 quasar candidates with
sensitive X-ray coverage by observing 12 luminous narrow-line AGN at z=0.40-0.73
with Chandra. These observations will confirm whether these sources are genuine
obscured quasars (NH>10^22 cm^-2; L(2-10 keV)>10^44 erg/s) through basic X-ray
spectral fitting and stacking analyses. Although past investigations have shown
that >50% of the SDSS Type 2 quasars have NH>10^22-10^23 cm^-2, with the
remaining sources being possibly more obscured, statistical analyses have been
challenged by the small number of sources available. With the proposed
observations, we will observe all of the SDSS Type 2 quasar candidates with
L(2-10 keV)>4x10^44 erg/s.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:56:21.70 +00:32:35.80 SDSS J005621.72+0032 ACIS-S NONE 10.0000
01:20:32.20 -00:55:02.00 SDSS J012032.21-0055 ACIS-S NONE 10.0000
01:34:16.30 +00:14:13.60 SDSS J013416.34+0014 ACIS-S NONE 10.0000
01:49:32.50 -00:48:03.70 SDSS J014932.53-0048 ACIS-S NONE 10.0000
01:57:16.90 -00:53:04.80 SDSS J015716.92-0053 ACIS-S NONE 10.0000
07:37:45.90 +40:21:46.50 SDSS J073745.88+4021 ACIS-S NONE 10.0000
09:21:52.40 +51:53:48.10 SDSS J092152.45+5153 ACIS-S NONE 10.0000
10:27:46.00 +00:32:05.00 SDSS J102746.03+0032 ACIS-S NONE 10.0000
10:39:51.50 +64:30:04.20 SDSS J103951.49+6430 ACIS-S NONE 10.0000
12:28:45.70 +00:50:18.70 SDSS J122845.74+0050 ACIS-S NONE 10.0000
14:46:42.30 +01:13:03.00 SDSS J144642.29+0113 ACIS-S NONE 10.0000
15:17:11.50 +03:31:00.20 SDSS J151711.47+0331 ACIS-S NONE 10.0000
==========================================================================================
Proposal Number: 08700229
Proposal Title: Microlensing of the Quadruply Lensed Quasar PG 1115+080
PI: David Pooley
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: The quaduply lensed quasar PG 1115+080 shows strong evidence from
Chandra observations carried out in 2000 of being microlensed by one or more
stellar mass objects in the lensing galaxy. If true, the X-ray and optical flux
ratios among the four images place severe constraints on the sizes of the
emitting regions. Under the microlensing hypothesis, the strongly demagnified A2
image should become less demagnified on a time scale of ~10 years. Recent XMM
observations suggest this could be taking place. A 30 ks Chandra observation will
provide a crucial test of the microlensing hypothesis.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
11:18:17.00 +07:45:59.40 PG1115+080 ACIS-S NONE 30.0000
==========================================================================================
Proposal Number: 08700238
Proposal Title: Flux ratio anomalies in gravitationally lensed quasars with four
images: Chandra observations of 4 new systems.
PI: Paul Schechter
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose to observe four quasars lensed by intervening galaxies for a
total of 55 ksec. Each quasar has four images. Comparison of the X-ray flux
ratios with the corresponding optical ratios constrains the relative sizes of the
two emitting regions. Comparison with predictions from smooth lens models
constrains the lenses' dark matter content. There is growing evidence that the
flux ratio ``anomalies'' -- the differences between the observed fluxes and those
predicted by smooth models -- are yet larger in X-rays than in the optical. The
implications are first, that the optical comes from a substantially larger region
than predicted by Shakura-Sunyaev disks models, and second, that X-ray
observations give a better handle on the dark matter content than optical
observations.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
04:38:14.80 -12:17:15.00 HE0435-1223 ACIS-S NONE 10.0000
11:16:23.50 -06:57:39.00 HE1113-0641 ACIS-S NONE 15.0000
11:38:03.70 +03:14:58.10 SDSS1138+0314 ACIS-S NONE 20.0000
20:26:10.40 -45:36:27.10 WFI2026-4536 ACIS-S NONE 10.0000
==========================================================================================
Proposal Number: 08700341
Proposal Title: Exploring the X-ray--TeV connection in BLLacs at short
timescales
PI: Luigi Costamante
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose to perform 1 ToO for a full night (~30 ks) simultaneous
observation with Chandra and H.E.S.S., on a TeV flaring blazar with flux high
enough to constrain both spectra on hour timescales or less. Our goal is to
investigate with unprecedented detail the intra-night and sub-hour variability in
TeV blazars, and to shed light onto the relation between X-ray and TeV emissions,
whose usual correlation has been questioned by recent results (e.g. 1ES
1959+650).
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
TeV flaring BLLac ACIS-S NONE 30.0000
==========================================================================================
Proposal Number: 08700344
Proposal Title: Investigating AGN Activity in Low Surface Brightness Galaxies
PI: Mousumi Das
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: Low surface brightness (LSB) galaxies represent an extreme population
in terms of galaxy evolution. They have diffuse stellar disks but massive HI gas
masses; a large fraction also have large bulges. AGN activity has been detected
in LSB galaxies and in at least one case radio jets/lobes have been detected as
well. Very little is known about the AGN activity and X-ray emission from LSB
galaxies. We request Chandra time to measure the X-ray emission from the AGN in a
sample of 15 giant LSB galaxies. We will also catalogue the non-nuclear X-ray
sources. Given the current progress in relating AGN activity directly to galactic
evolution, it is particularly important to study AGN activity in this unusual
class of galaxies.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
01:56:19.20 +73:16:58.00 UGC 1378 ACIS-S NONE 3.5000
01:58:48.00 +24:53:33.00 UGC 1455 ACIS-S NONE 3.6000
02:27:45.80 +28:12:33.00 UGC 1922 ACIS-S NONE 6.0000
04:02:48.20 +01:57:57.00 UGC 02936 ACIS-S NONE 3.0000
04:29:42.40 +03:40:55.00 UGC 3059 ACIS-S NONE 3.2000
08:27:42.00 +21:28:44.00 UGC 4422 ACIS-S NONE 3.0000
21:29:31.50 +27:19:17.00 UGC 11754 ACIS-S NONE 4.4000
23:55:41.90 +31:53:59.00 UGC 12845 ACIS-S NONE 3.3000
==========================================================================================
Proposal Number: 08700396
Proposal Title: Are Compton-thick quasars hidden among the population of heavily
obscured Spitzer-selected AGN?
PI: Cristian Vignali
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: A fraction as high as 50-70% of the Seyfert 2 galaxies in the local
Universe are obscured by cold gas, with column densities larger than Nh=10^24
cm^-2 (i.e., in the Compton-thick regime). Heavy obscuration has to be common
also at larger distances in order to explain the XRB spectral shape around 30
keV. Despite intensive searches, mostly performed in the X-ray band, only a few
candidates beyond the nearby Universe have been uncovered thus far. We propose
pilot Chandra observations of a well defined sample of seven high-redshift
(z=1.8-2.7) sources suspected to host a Compton-thick AGN selected from
moderate-depth mid-infrared (Spitzer) observations in the Bootes Field.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
14:25:38.20 +35:18:55.20 SST24 J142538.22+351 ACIS-S NONE 15.0000
14:26:45.70 +35:19:01.40 SST24 J142645.71+351 ACIS-S NONE 15.0000
14:29:24.80 +35:33:20.30 SST24 J142924.83+353 ACIS-S NONE 15.0000
14:34:47.70 +33:02:30.60 SST24 J143447.70+330 ACIS-S NONE 15.0000
14:35:20.70 +34:04:18.20 SST24 J143520.75+340 ACIS-S NONE 15.0000
14:35:39.30 +33:41:59.10 SST24 J143539.34+334 ACIS-S NONE 15.0000
14:36:44.20 +35:06:27.40 SST24 J143644.22+350 ACIS-S NONE 60.0000
==========================================================================================
Proposal Number: 08700408
Proposal Title: An Exploratory Chandra Survey of Weak-Line Quasars from the
Sloan Digital Sky Survey
PI: William Brandt
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: The SDSS has discovered a mysterious class of radio-quiet and
radio-moderate quasars at high redshift with no or extremely weak high-ionization
emission lines. These weak-line quasars (WLQs) may have "anemic" high-ionization
Broad Line Regions, or they may have relativistically boosted optical/UV continua
(as for BL Lacs). We propose exploratory Chandra observations of 9 WLQs that will
nearly triple the sample with sensitive X-ray coverage, allowing the first
reliable characterization of their basic X-ray properties. By probing their inner
accretion regions, we aim to assess the current explanations for WLQs and their
implications for, e.g., emission-line formation, high-velocity outflows, and
relativistic jets.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
03:17:12.20 -07:58:50.30 SDSS J0317-0758 ACIS-S NONE 4.3000
09:28:32.90 +18:48:24.40 SDSS J0928+1848 ACIS-S NONE 4.0000
11:41:53.30 +02:19:24.30 SDSS J1141+0219 ACIS-S NONE 4.0000
12:12:21.60 +53:41:27.90 SDSS J1212+5341 ACIS-S NONE 4.0000
12:31:32.40 +01:38:14.00 SDSS J1231+0138 ACIS-S NONE 4.0000
13:02:16.10 +00:30:32.10 SDSS J1302+0030 ACIS-S NONE 9.5000
13:34:22.60 +47:50:33.50 SDSS J1334+4750 ACIS-S NONE 11.6000
13:35:50.80 +35:33:15.80 SDSS J1335+3533 ACIS-S NONE 23.6000
14:21:03.80 +34:33:32.00 SDSS J1421+3433 ACIS-S NONE 12.8000
==========================================================================================
Proposal Number: 08700463
Proposal Title: A snapshot X-ray/radio survey of AGNs selected from the long
menu of SDSS galaxies
PI: Sebastian Heinz
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose to carry out a 200 ksec {\em Chandra} and 10 hr VLA
X-ray/radio snapshot survey of a sample of 17 AGN selected from the Sloan Digital
Sky Survey. The sample is chosen to span a wide range in both emission line and
radio luminosity. The goal of the investigation is to compare and calibrate
[OIII], X-ray, and radio luminosities as accretion rate indicators for both
low-luminosity and high-luminosity AGN, to investigate the nature and origin of
radio-loudness, and to test the ``fundamental plane of black hole activity''
using a sample of black holes of fixed mass that cover a wide range in accretion
rate.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
01:01:01.10 -00:24:44.28 2MASX J010103-013440 ACIS-S NONE 17.0000
01:41:16.34 -08:35:39.12 SDSS J014116-092420 ACIS-S NONE 5.0000
08:10:40.27 +48:12:33.13 2MASX J081040+481233 ACIS-S NONE 11.0000
08:36:42.82 +53:34:32.52 2MASX J083642+533431 ACIS-S NONE 16.0000
08:37:18.00 +53:15:16.92 2MASX J083717+531517 ACIS-S NONE 7.0000
09:12:01.68 +53:20:36.59 2MASX J091201+532036 ACIS-S NONE 19.0000
10:12:39.87 -01:06:22.68 LCRS B101008-023710 ACIS-S NONE 17.0000
11:09:57.14 +02:01:38.64 2MASX J110957+020138 ACIS-S NONE 7.0000
12:53:47.02 +03:26:30.48 CGCG 043-056 ACIS-S NONE 8.0000
13:49:07.23 +05:04:12.00 2MASX J134907+050413 ACIS-S NONE 11.0000
13:49:09.62 +04:04:48.36 2MASX J134909+040448 ACIS-S NONE 11.0000
15:42:28.34 +52:59:51.00 2MASX J154228+525950 ACIS-S NONE 9.0000
16:01:09.07 +46:23:17.89 2MASX J160109+462318 ACIS-S NONE 11.0000
16:02:46.39 +52:43:58.44 4C52.37 ACIS-S NONE 20.0000
16:12:09.29 +00:03:33.12 2MASX J161209+000333 ACIS-S NONE 6.0000
21:25:12.48 -07:13:30.00 APMUKS 212229-085908 ACIS-S NONE 7.0000
23:08:17.31 -09:46:22.44 APMUKS 230535-102920 ACIS-S NONE 18.0000
==========================================================================================
Proposal Number: 08700478
Proposal Title: X-ray Jets and Lobe-Cluster Interaction in 3C353
PI: Jun Kataoka
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: Structure of jets and their basic properties are still unknown. That is
especially true for the most powerful jets hosted by quasars and FRII radio
galaxies, because they are too distant to study their structure with high spatial
resolution. Radio galaxy 3C353 is a truly unique source, because its two jets -
of the FRII type - are 4''-wide, and therefore can be well resolved by Chandra.
Moreover, it is situated at the edge of the merging cluster Zw1718.1-0108, and is
characterized by an unusual (asymmetric) lobe morphology. The proposed 90 ks
Chandra observation of this objects will allow us to investigate [1] the
transverse structure of an X-ray jet of the FR II type with unparalleled spatial
resolution, and [2] the interaction between the lobes of this radio galaxy and a
merging cluster.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:20:28.10 -00:58:46.80 3C353 ACIS-S NONE 90.0000
==========================================================================================
Proposal Number: 08700502
Proposal Title: Dissecting an Accretion Disk
PI: Chistopher Kochanek
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We will use 5 epochs of CXO and HST imaging to determine the X-ray and
UV size of the accretion disk of the lensed quasar RXJ1131--1231 using
microlensing. Based on preliminary data, we find that the X-ray source is roughly
1/10 the size of the accretion disk in the rest-frame B-band. The new
observations will significantly reduce the uncertainties in this estimate,
provide a comparison between the size of the X-ray source and the size of the
accretion disk in the rest frame ultraviolet, and have the signal-to-noise ratio
necessary to begin examining the size of the hard and soft-band X-ray emission
regions separately. The results will quantitatively test accretion disk theory
and X-ray emission mechanisms.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
11:31:51.60 -12:31:57.00 RXJ1131-1231 ACIS-S NONE 5.0000
11:31:51.60 -12:31:57.00 RXJ1131-1231 ACIS-S NONE 5.0000
11:31:51.60 -12:31:57.00 RXJ1131-1231 ACIS-S NONE 5.0000
11:31:51.60 -12:31:57.00 RXJ1131-1231 ACIS-S NONE 5.0000
11:31:51.60 -12:31:57.00 RXJ1131-1231 ACIS-S NONE 5.0000
11:31:51.60 -12:31:57.00 RXJ1131-1231 ACIS-S NONE 5.0000
11:31:51.60 -12:31:57.00 RXJ1131-1231 ACIS-S NONE 5.0000
11:31:51.60 -12:31:57.00 RXJ1131-1231 ACIS-S NONE 5.0000
11:31:51.60 -12:31:57.00 RXJ1131-1231 ACIS-S NONE 5.0000
11:31:51.60 -12:31:57.00 RXJ1131-1231 ACIS-S NONE 5.0000
==========================================================================================
Proposal Number: 08700512
Proposal Title: Jets, Bubbles, Binaries, and Hot Gas: A Deep Observation of
Centaurus A
PI: Ralph Kraft
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose to observe Centaurus A, the nearest radio galaxy and the
nearest massive early-type galaxy, for 1.2 Ms. We will probe the particle
acceleration processes of the jet to an unprecedented sensitivity, by measuring
its spectrum and morphology on the scale of radiative energy losses. We also will
measure the proper motions and velocity shear of X-ray knots. We will measure the
temperature and density structure of the shock around the SW radio lobe to study
the hydrodynamics of the lobe/ISM interaction to a level previously seen only in
Galactic SNRs. We will detect hundreds of X-ray binaries, probe the GC/LMXB link,
and investigate their temporal properties. Finally, we will measure the
thermodynamic paramters of the gas and the elemental abundance throughout the
ISM.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
13:25:33.00 -43:00:11.00 Centaurus A Jet ACIS-I NONE 120.0000
13:25:33.00 -43:00:11.00 Centaurus A Jet ACIS-I NONE 160.0000
13:25:33.00 -43:00:11.00 Centaurus A Jet ACIS-I NONE 160.0000
13:25:33.00 -43:00:11.00 Centaurus A Jet ACIS-I NONE 160.0000
==========================================================================================
Proposal Number: 08700521
Proposal Title: What Powers the z~2 Spitzer ULIRGs in the First Look Survey
PI: Lin Yan
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose an exploratory program of 5x30ksec to target ~16 z~2 ULIRGs,
recently discovered with Spitzer mid-IR spectroscopy. Their mid-IR spectra and
redshifts indicate these are heavily obscured systems; are (1-2) dex brighter
than local ULIRGs; and are likely to contain a significant AGN component.
Combined with our Spitzer data, the proposed X-ray observations will constrain
the AGN contribution to the bolometric luminosity, and the true SFR density at
z~2. More importantly, it will test the possible connection between ULIRGs and
QSOs at z~2, and whether our ULIRGs are a distinct population missed in sub-mm
surveys; both results have significant cosmological implications. Finally, our
results will set tighter constraints on the volume density of type II QSOs
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:11:58.30 +58:45:29.90 FLS4 ACIS-I NONE 30.0000
17:14:46.30 +60:10:05.50 FLS1 ACIS-I NONE 30.0000
17:15:27.10 +59:38:42.00 FLS3 ACIS-I NONE 30.0000
17:18:40.10 +60:02:07.80 FLS2 ACIS-I NONE 30.0000
17:23:44.20 +59:23:35.90 FLS6 ACIS-I NONE 30.0000
==========================================================================================
Proposal Number: 08700540
Proposal Title: What is Energizing the extended X-ray emission surrounding the
jet in PKS 1055+201?
PI: Daniel Schwartz
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose a 220 ks observation of PKS 1055+201 to probe the spectral
and spatial structure of extended X-ray emission surrounding the narrow X-ray and
radio jet. The system is unusual by showing only very weak radio emission from
this extended ``tube.'' Our measurements will relate these structures to the
magnetic fields, Doppler factors, and kinetic energy fluxes along the jet, giving
a prime opportunity to constrain the system energetics.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
10:58:17.90 +19:51:50.90 PKS 1055+201 ACIS-S NONE 60.0000
10:58:17.90 +19:51:50.90 PKS 1055+201 ACIS-S NONE 160.0000
==========================================================================================
Proposal Number: 08700551
Proposal Title: The Chandra-RBGS Survey of a Complete Sample of Luminous
Infrared Galaxies
PI: David Sanders
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose a Chandra-ACIS survey of a complete sample of Luminous
Infrared Galaxies (LIRGs) with Lir >10^11.5, from the IRAS Revised Bright Galaxy
Sample (RBGS). All of these objects are interacting/merging gas-rich spirals. Our
new observations will provide a uniform and complete census of AGN and X-ray
luminous starbursts in the nearest and brightest LIRGs, and will complement
approved Spitzer-IRAC+MIPS, and HST-ACS imaging of the same sample. The results
will be used to address the following key questions: are binary AGN a common
feature of these LIRGs, and if so, when and at what level is the AGN activity
triggered in each nucleus ? and can the fueling and growth of massive black holes
be correlated in time with the merger phase ?
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
01:38:52.90 -10:27:11.40 IRAS F01364-1042 ACIS-S NONE 15.0000
04:46:49.50 -48:33:32.90 ESO 203-IG001 ACIS-S NONE 15.0000
05:16:46.40 +79:40:12.60 VII Zw 031 ACIS-S NONE 15.0000
06:27:23.10 -47:10:47.00 ESO 255-IG007 ACIS-S NONE 15.0000
07:27:37.60 -02:54:54.10 IRAS 07251-0248 ACIS-S NONE 15.0000
08:52:29.90 -69:01:58.00 ESO 60-IG016 ACIS-S NONE 15.0000
09:04:12.70 -36:27:01.10 IRAS 09022-3615 ACIS-S NONE 15.0000
09:13:38.80 -10:19:20.30 IRAS F09111-1007 ACIS-S NONE 15.0000
10:06:04.80 -33:53:15.00 IC 2545 ACIS-S NONE 15.0000
10:20:00.20 +08:13:34.00 IRAS F10173+0828 ACIS-S NONE 15.0000
13:15:06.40 -55:09:22.70 IRAS 13120-5453 ACIS-S NONE 15.0000
13:15:35.00 +62:07:28.80 VV 250a ACIS-S NONE 15.0000
13:20:35.30 +34:08:22.20 UGC 08387 ACIS-S NONE 15.0000
14:40:59.00 -37:04:32.00 IRAS F14378-3651 ACIS-S NONE 15.0000
14:57:00.70 +24:37:02.70 VV 340a ACIS-S NONE 15.0000
16:38:13.20 -68:26:42.80 ESO 069-IG006 ACIS-S NONE 15.0000
17:14:20.00 +53:10:30.00 IRAS F17132+5313 ACIS-S NONE 15.0000
18:32:41.10 -34:11:27.50 IRAS F18293-3413 ACIS-S NONE 15.0000
19:14:30.90 -21:19:07.00 ESO 593-IG008 ACIS-S NONE 15.0000
19:32:21.20 -03:59:56.30 IRAS F19297-0406 ACIS-S NONE 15.0000
19:56:35.40 +11:19:02.60 IRAS 19542+1110 ACIS-S NONE 15.0000
20:57:23.30 +17:07:34.30 CGCG 448-020 ACIS-S NONE 15.0000
21:11:30.40 +58:23:03.20 IRAS 21101+5810 ACIS-S NONE 15.0000
22:49:39.90 -48:50:58.10 ESO 239-IG002 ACIS-S NONE 15.0000
22:51:49.30 -17:52:23.50 IRAS F22491-1808 ACIS-S NONE 15.0000
23:21:04.30 -69:12:54.00 ESO 077-IG014 ACIS-S NONE 15.0000
==========================================================================================
Proposal Number: 08700576
Proposal Title: Interaction of AGN Outbursts with their Environments
PI: William Forman
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose to study the interactions of AGN outbursts with their
environments through an observation of two radio sources, PKS0123-016A and 3C40,
associated with NGC541 and NGC547. Both galaxies lie in the cluster A194 and are
surrounded by small X-ray coronae. Using a VLA observation, we will compare the
coronal gas parameters (density, temperature, pressure) with the radio structure
to understand how powerful AGN channel energy through tenuous coronae. We will
measure the source spectrum, detect individual luminous X-ray sources, and
compare the radio and X-ray structure of Minkowski's object, a local example of
jet-induced star formation that lies along the jet emanating from NGC541. We will
search for jet emission from both 3C40 and PKS0123-016A and study the hotspot in
PKS0123-016A.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
01:25:53.50 -01:21:54.00 3C40 and PKS0123-016 ACIS-S NONE 75.0000
==========================================================================================
Proposal Number: 08700618
Proposal Title: Probing the Disk-Wind Connection in the Seyfert Galaxy NGC 4151
PI: STEVEN KRAEMER
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: Recent X-ray observations of NGC 4151 have revealed dramatic changes in
the X-ray absorption due to bulk motion of the gas across our line-of-sight. We
determined that a component of this gas has a transverse velocity > 1250 km/sec
and, based on photo-ionization models, must lie ~ 0.1 pc from the central. This
suggests that the absorber arises in a disk-driven wind, making NGC 4151 the only
Seyfert 1 to have shown direct evidence of this phenomenon. However, the
connection between this component and the high column density gas responsible for
most of the X-ray absorption is unknown. We request 2 Chandra/HETG observations,
of 50 ksec each, to follow our two cycle 5 XMM observations, to monitor changes
in the absorbers, constrain their physical conditions, and probe the disk-wind
connection.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:10:32.60 +39:24:20.60 NGC 4151 ACIS-S HETG 50.0000
12:10:32.60 +39:24:20.60 NGC 4151 ACIS-S HETG 50.0000
==========================================================================================
Proposal Number: 08700652
Proposal Title: Demographics of black holes in the local Universe.
PI: Smita Mathur
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: Recent observations imply that at redshift zero, most of the nuclear
activity must reside in low mass galaxies, preferentially late-type spirals and
dwarf ellipticals. We propose to search for low-level nuclear activity in a
representative sample of low-mass galaxies within 20Mpc. This study will allow us
to set lower limits to the number of galaxies which host low-mass supermassive
black holes (SBH) (<10^7 M_sun, pushing the limit of known SBHs down to 10^4
M_sun), and explore the correlation between low level X-ray activity and galaxy
morphology. In particular, we will be able to determine to what extent the
presence/morphology of a bulge component influences SBH formation. These issues
have important consequences toward understanding the formation and co-evolution
of SBHs and galaxies.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:47:47.30 -11:28:07.30 NGC 255 ACIS-S NONE 5.0000
01:47:42.80 -52:45:42.50 NGC 685 ACIS-S NONE 5.0000
02:35:32.70 -07:09:15.90 NGC 991 ACIS-S NONE 5.0000
03:19:51.20 -26:03:38.10 NGC 1302 ACIS-S NONE 5.0000
03:23:06.60 -21:22:30.60 NGC 1315 ACIS-S NONE 5.0000
03:24:48.50 -21:20:10.00 NGC 1325A ACIS-S NONE 5.0000
03:27:58.40 -37:08:60.00 NGC 1341 ACIS-S NONE 5.0000
03:39:30.80 -18:41:17.40 NGC 1400 ACIS-S NONE 5.0000
04:10:59.90 -56:28:49.60 NGC 1536 ACIS-S NONE 5.0000
04:42:14.50 -20:26:05.20 NGC 1640 ACIS-S NONE 5.0000
04:52:52.10 -59:44:32.10 NGC 1703 ACIS-S NONE 5.0000
05:41:51.10 -64:18:04.10 NGC 2082 ACIS-S NONE 5.0000
10:00:52.10 +55:37:07.80 NGC 3073 ACIS-S NONE 5.0000
10:08:09.30 +51:50:38.00 UGC 5460 ACIS-S NONE 5.0000
10:36:23.80 +12:42:26.60 NGC 3299 ACIS-S NONE 5.0000
11:47:04.60 -16:51:16.60 NGC 3887 ACIS-S NONE 5.0000
11:50:38.90 +55:21:13.90 NGC 3913 ACIS-S NONE 5.0000
11:52:49.50 +44:07:14.60 NGC 3938 ACIS-S NONE 5.0000
11:57:17.30 +49:16:59.10 UGC 6930 ACIS-S NONE 5.0000
12:01:23.70 +13:24:03.70 NGC 4037 ACIS-S NONE 5.0000
12:18:49.60 +14:24:59.40 NGC 4254 ACIS-S NONE 5.0000
12:21:40.90 +11:30:12.20 NGC 4299 ACIS-S NONE 5.0000
12:21:56.90 +30:04:27.30 NGC 4308 ACIS-S NONE 5.0000
12:25:51.20 +27:33:41.60 NGC 4393 ACIS-S NONE 5.0000
12:25:55.60 +18:12:50.10 NGC 4394 ACIS-S NONE 5.0000
12:26:30.10 +08:52:20.00 NGC 4411 ACIS-S NONE 5.0000
12:26:47.20 +08:53:04.60 UGC 7546 ACIS-S NONE 5.0000
12:30:59.70 +08:04:40.60 NGC 4492 ACIS-S NONE 5.0000
12:36:56.40 +14:13:02.50 NGC 4571 ACIS-S NONE 5.0000
12:45:06.00 +03:03:20.60 NGC 4665 ACIS-S NONE 5.0000
12:47:45.60 +13:45:46.10 NGC 4689 ACIS-S NONE 5.0000
12:47:46.50 +04:20:09.90 NGC 4688 ACIS-S NONE 5.0000
13:00:39.10 +02:30:05.30 NGC 4900 ACIS-S NONE 5.0000
15:35:10.50 +16:32:58.00 UGC 9912 ACIS-S NONE 5.0000
21:29:59.60 +02:24:51.00 NGC 7077 ACIS-S NONE 5.0000
23:16:10.80 -42:35:05.40 NGC 7552 ACIS-S NONE 5.0000
23:28:43.40 -41:20:00.50 IC 5325 ACIS-S NONE 5.0000
==========================================================================================
Proposal Number: 08700654
Proposal Title: Rapid Follow-Up Observations of Tidal Disruption Events
Discovered in the GALEX Deep Imaging Survey
PI: Suvi Gezari
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: Luminous UV/X-ray flares are predicted to occur when a star is tidally
disrupted by a galaxy's central supermassive black hole, and some fraction of the
tidal debris is accreted. The GALEX Deep Imaging Survey (DIS) has the ideal
depth, wavelength coverage, and temporal sampling for detecting flares from tidal
disruption events in the nuclei of galaxies over a large range of redshifts. We
propose to continue our approved Chandra Cycle 7 TOO program to follow-up
candidate tidal disruption flares discovered by GALEX. Chandra imaging is
critical for measuring the temperature, luminosity, and lightcurve of the tidal
disruption flares, which are direct probes of the mass of the central black
hole.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
Tidal Disruption Eve ACIS-S NONE 30.0000
Tidal Disruption Eve ACIS-S NONE 30.0000
==========================================================================================
Proposal Number: 08700664
Proposal Title: The X-ray emission mechanism and jet kinematics at the hot spots
of radio galaxy 3C 445
PI: Markos Georganopoulos
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: The X-ray emission mechanism and kinematics of the hot spots of radio
galaxies remain unknown. We propose Chandra observations of 3C 445, a radio
galaxy with near-IR hot spot detections. We will address the hot spot X-ray
emission issue with a very clean test: If the X-ray image of the southern hot
spot exhibits the fine structure of the near-IR image, this will argue for a
synchrotron mechanism, while a broad X-ray image, similar to the radio image will
indicate an inverse Compton origin. We will also use our observations, together
with existing data, to infer the hot spot velocity profile by modeling the
multiwavelength spectra of both the approaching and receding hot spots. Note that
we are the only group with tools for modeling the emission from decelerating
relativistic flows.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
22:23:49.60 -02:06:12.00 3C 445 ACIS-S NONE 50.0000
==========================================================================================
Proposal Number: 08700723
Proposal Title: Chandra Imaging of the Highest Redshift Relativistic Jets
PI: Teddy Cheung
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose Chandra imaging of 16 high-redshift (z=2.1-4.7) quasars with
bright extended (>2.5'' long) radio jets to search for and study their X-ray
counterparts. The radio sources are core-dominated, and their flat-spectrum
indicate that relativistic beaming of the emission is important. These data will
systematically probe the physics of relativistic jets at much higher-redshifts
than studied with Chandra thus far. Also, the currently favored models --
synchrotron vs. inverse Compton (IC) scattering of the CMB -- predict vastly
different X-ray fluxes for these jets at such high-redshifts. These observations
may serve as a simple test of these models.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
08:37:22.40 +58:25:01.80 0833+585 ACIS-S NONE 4.0000
12:42:09.80 +37:20:05.70 1239+376 ACIS-S NONE 5.0000
14:21:07.70 -06:43:56.30 J1421-0643 ACIS-S NONE 3.5000
14:30:23.70 +42:04:36.50 1428+4217 ACIS-S NONE 10.5000
17:54:22.30 +67:37:35.80 J1745+6737 ACIS-S NONE 7.0000
==========================================================================================
Proposal Number: 08700734
Proposal Title: Resolving the nature of PKS 1413+135 and its absorber
PI: Eric Perlman
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: The radio-loud AGN PKS 1413+135 has puzzled astronomers for decades,
because of its small size, extreme IR spectral cutoff and apparent spiral host
galaxy. HST, ASCA and VLBA observations suggest an elegant solution: the AGN is
partially covered by a giant molecular cloud in the galaxy's disk. We propose
Chandra observations to verify this hypothesis. The Chandra observations will
allow us to obtain a 0.1" quality position for comparison with the radio source
position, and will allow us to investigate the possibility that the X-ray
spectrum as measured by ASCA was due to reprocessed and/or extended emission. We
expect to see both absorption edges as well as Fe K-alpha emission, which will
allow us to investigate connections between the source's youth and the nature of
its host galaxy.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
14:15:58.80 +13:20:24.00 PKS 1413+135 ACIS-S NONE 20.0000
==========================================================================================
Proposal Number: 08700735
Proposal Title: Bent Jets in Brightest Cluster Galaxies
PI: Nazirah Jetha
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: Wide angle tailed radio galaxies (WATs) contain small kpc-scale jets
that flare suddenly. The reason for this flaring is not understood, but previous
Chandra observations suggest that it is due to the ISM/ICM interface. Here we
propose observations of WATs with bent jets. Recent work suggests that high
galaxy speeds are needed to bend the jets. If this is the case, then the ISM
should be stripped, and jet flaring should not coincide with the interface. We
intend to ascertain the presence of the ISM in bent WAT host galaxies, to
determine if the interface is responsible for the jet flaring. This will enable a
better understanding of the physics of AGN jets.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
16:39:37.20 +52:24:13.30 Abell 2220 ACIS-S NONE 35.0000
21:57:54.40 +09:01:05.50 Abell 2395 ACIS-S NONE 35.0000
==========================================================================================
Proposal Number: 08700819
Proposal Title: The Circumnuclear X-Ray Environments of Highly Disturbed Seyfert
Galaxies
PI: Daniel Evans
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose 60 ks and 35 ks Chandra/ACIS-S observations of the optically
disturbed circumnuclear narrow-line environments of the ``radio-loud'' Seyfert 2
galaxies Mrk 573 and IC 5063. We will use Chandra's superb spatial resolution to
explore the complex relationship between the X-ray-emitting shock-heated gas,
radio outflows, and optical line-emission. We will determine the role of shocks
in imparting energy into the ambient ISM, assess the part that ionizing nuclear
radiation plays in governing the narrow-line morphology, and constrain the energy
budgets involved in creating such disturbed circumnuclear environments.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
20:52:02.30 -57:04:07.60 IC 5063 ACIS-S NONE 35.0000
==========================================================================================
Proposal Number: 08700916
Proposal Title: The Definitive Chandra Observations of NGC 4258
PI: Michael Nowak
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose a 320 ksec HETG observation of NGC 4258. This will yield a
high S/N nuclear spectra that is uncontaminated by extended emission or pileup.
We will measure the fluorescent Kalpha line strength and width, search for low
energy emission lines as expected in some ADAF models, and accurately measure the
absorbing column. The latter may be probing the warped disk structure. We will
search for nuclear flaring, as observed in Sgr A*. The S/N for observations of
the `anomalous arms' will be increased over previous observations. The binary
population will be surveyed down to an implied isotropic luminosity of 10^36
erg/s. Our observation will be coordinated with the VLA, to further test the
"fundamental plane" of black hole radio/X-ray activity.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:18:58.00 +47:18:14.00 NGC 4258 ACIS-S HETG 160.0000
12:18:58.00 +47:18:14.00 NGC 4258 ACIS-S HETG 160.0000
==========================================================================================
Proposal Number: 08700989
Proposal Title: A Chandra survey of hybrid morphology radio sources
PI: Brendan Miller
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose to observe three HYbrid MOrphology Radio Sources (HYMORS):
3C 433, 4C+65.15, and 4C-02.02, each with a 40 ks ACIS-S observation (for a total
of 120 ks of Chandra time). These radio-loud sources host an FR I jet spatially
oriented in opposition to an FR II jet, and hence challenge the intrinsic nature
of the FR I/FR II divide. An X-ray observation of one such HYMORS, PG 1004+130,
has already proven useful for constraining specific models describing the HYMORS
phenomenon. We will utilize the additional Chandra observations of 3C 433,
4C+65.15, and 4C-02.02 to investigate the physics of these sources and clarify
the relationship between their observed radio morphology and X-ray properties.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
13:25:29.70 +65:15:13.00 4C+65.15 ACIS-S NONE 40.0000
21:23:44.50 +25:04:11.80 3C 433 ACIS-S NONE 40.0000
==========================================================================================
Proposal Number: 08701038
Proposal Title: HST/Chandra Monitoring of a Dramatic Flare in the M87 Jet
PI: John Biretta
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: (abridged) Beginning in 2002, HST and Chandra monitoring of the M87 jet
detected a dramatic flare in knot HST-1 located ~0.8" from the nucleus. Its
brightness increased seventy-fold in the optical band before peaking in 2005; the
X-rays show a similarly dramatic outburst. To our knowledge this is the first
incidence of an optical or X-ray outburst from a jet region which is spatially
distinct from the core source -- this presents an unprecedented opportunity to
study the processes responsible for non-thermal variability and the X-ray
emission. We propose five epochs of HST/ACS flux monitoring during Cycle 15, as
well as seven epochs of Chandra/ACIS observation (5ksec each). At two of the
HST/ACS epochs we also gather spectral information and map the magnetic field
structure.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.0000
12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.0000
12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.0000
12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.0000
12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.0000
12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.0000
12:30:49.00 +12:23:30.00 M87 ACIS-S NONE 5.0000
==========================================================================================
Proposal Number: 08701041
Proposal Title: 70 Micron MIPS and Chandra ACIS-I Imaging of the IRAC Dark
Field: Infrared AGN
PI: Jason Surace
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: Using the Infrared Array Camera on-board Spitzer, we have been able to
discover a population of objects with mid-infrared variability on
months-timescales and whose colors are characteristic of active galactic nuclei
(AGN). We request 26 hours of imaging at 70um with MIPS and 100 ksec of x-ray
imaging with ACIS of the IRAC Dark Field. This is an extragalactic field 15
arcminutes in diameter near the north ecliptic pole. Due to the periodicity of
the observations, the Spitzer data are sensitive to variability on week
timescales, ultimately spanning a baseline of five to seven years. This cannot be
achieved with an ordinary science GO program, and this is the only mid-infrared
dataset that will have this capability for the foreseeable future. (abridged from
Spitzer proposal)
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:40:02.00 +68:59:45.00 IRAC Dark Field ACIS-I NONE 100.0000
==========================================================================================
Proposal Number: 08701043
Proposal Title: Coordinated Spitzer/Chandra Observations of Gamma Ray Blazars
PI: Ann Wehrle
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: Through approved Spitzer Cycle 3 Proposal 30785, we will coordinate
near-simultaneous Spitzer and Chandra observations of three gamma-ray blazars.
The blazars have two-peaked spectral energy distributions, where the infrared
peak is synchtrotron emission produced by relativistic electrons, and the
x-ray-gamma-ray peak is inverse-Compton scattered emission. The observations will
map out the shape of the SED and its changes with two sets of independent
observations about six months apart. The Chandra observations are used to obtain
x-ray fluxes and spectral indices which will indicate relative contributions of
synchrotron and inverse-Compton emission. The Spitzer MIPS and Chandra
observations need to be scheduled within a day of each other because the sources
are highly variable.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:29:06.70 +02:03:08.50 3C273 ACIS-S HETG 2.0000
12:29:06.70 +02:03:08.50 3C273 ACIS-S HETG 2.0000
12:56:11.20 -05:47:21.50 3C279 ACIS-S HETG 2.0000
12:56:11.20 -05:47:21.50 3C279 ACIS-S HETG 2.0000
22:53:57.70 +16:08:53.50 3C454.3 ACIS-S HETG 2.0000
22:53:57.70 +16:08:53.50 3C454.3 ACIS-S HETG 2.0000
==========================================================================================
Proposal Number: 08701046
Proposal Title: Search for strongly obscured AGN: support for INTEGRAL all-sky
hard X-ray survey
PI: Stephen Murray
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We are close to a completion of an all-sky hard X-ray survey with
INTEGRAL that will provide unbiased statistics of nearby AGN, including strongly
obscured ones. More than 70 INTEGRAL sources have already been identified with
AGN; 6 of these, all strongly absorbed, were localized and identified with
Chandra. We now propose to observe with Chandra the error boxes of another 13
INTEGRAL sources, candidate obscured AGN. This will help identify the sources,
measure their absorption columns, and complete the INTEGRAL survey.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
02:46:37.00 -42:22:01.20 IGR J02020+0204 ACIS-S NONE 3.5000
******************************************************************************************
CLUSTERS OF GALAXIES
******************************************************************************************
==========================================================================================
Proposal Number: 08800042
Proposal Title: The Complex X-ray Morphology of NGC 7618: A Major Group-Group
Merger in the Local Universe?
PI: Stephen Murray
Subject Category: CLUSTERS OF GALAXIES
Abstract: We propose to observse the cores of the nearby (74 Mpc) merging groups
NGC 7618 and UGC 12491 with Chandra/ACIS-S to study the hydrodynamics of the
group-group merger process. Group-group mergers play a key role in the formation
of structure in the universe. Our goal is to map the thermodynamic parameters of
the gas in the cores, search for evidence of shocks and other sharp surface
brightness discontinuities, and study the effects of the merger on the central
galaxies. An AO-1 snapshot of NGC 7618 revealed a sharp surface brightness
discontinuity in the gas. This is likely due to a sharp discontinuity in the
elemental abundance and is the result of `sloshing' of the core.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
23:18:40.80 +42:57:25.00 UGC 12491 ACIS-S NONE 35.0000
23:19:47.20 +42:51:07.00 NGC 7618 ACIS-S NONE 35.0000
==========================================================================================
Proposal Number: 08800047
Proposal Title: An X-ray/lensing calibration of cluster mass estimates
PI: Stephen Murray
Subject Category: CLUSTERS OF GALAXIES
Abstract: We have compiled the largest statistically complete sample of galaxy
clusters with weak lensing mass estimates. 31 of the 36 clusters have already
been observed with Chandra. With 60ks of Chandra observations, good quality X-ray
data can be obtained for the remaining 5, creating a homogeneous X-ray/lensing
dataset. For the first time, X-ray and weak lensing mass estimates will be
cross-calibrated in a volume limited sample. This will facilitate many important
results, including the measurement of systematic effects in the mass estimates
and their effect on derived cosmological constraints; improved calibration of the
X-ray observable - mass scaling relations; and accurate measurements of cluster
baryon fractions.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
04:37:08.40 +00:43:40.80 RXJ0437.1+0043 ACIS-I NONE 12.0000
09:00:37.90 +20:54:57.60 Z2089 ACIS-I NONE 9.0000
13:11:45.60 +22:01:48.00 Z5768 ACIS-I NONE 10.0000
15:01:20.20 +42:20:38.40 Z7215 ACIS-I NONE 14.0000
==========================================================================================
Proposal Number: 08800094
Proposal Title: AGN Feedback and Galaxy Formation in Cluster Cores
PI: Brian McNamara
Subject Category: CLUSTERS OF GALAXIES
Abstract: Many cD galaxies in nearby clusters are accreting gas and experiencing
star formation at cosmologically interesting rates. Some of the accreting gas is
falling onto their supermassive black holes and driving AGN outbursts with enough
power to regulate the level of accretion. If this is an important mode of galaxy
formation, it could lead to the observed ratio of supermassive black hole mass to
bulge mass found in nearby quiescent bulges. We propose to test this in three cDs
whose bulges and black holes are currently growing at an unusually rapid rate. We
intend to explore feedback processes in galaxy formation that may be shaping the
luminosity function of galaxies.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
09:47:12.00 +76:23:12.00 RBS 797 ACIS-S NONE 40.0000
13:03:42.00 -24:14:46.00 Abell 1664 ACIS-S NONE 40.0000
==========================================================================================
Proposal Number: 08800200
Proposal Title: The Formation of X-ray Luminous Groups
PI: John Mulchaey
Subject Category: CLUSTERS OF GALAXIES
Abstract: Recent XMM-Newton and HST observations suggest that many X-ray luminous
groups at intermediate redshifts are still in the process of formation. We
propose Chandra observations of two z=0.35 groups that appear to be in the
earliest stages of collapsing. In particular, neither group contains a dominant
early-type galaxy and both have X-ray and optical morphologies consistent with a
recently collapsed system. Chandra's high spatial resolution will be used to
cleanly separate out the emission of the individual galaxies from the more
extended group component, allowing us to study the morphology of the intragroup
gas in detail. The Chandra data will also be used to search for substructure and
temperature variations in the hot gas, as might be expected for a system that has
recently formed.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
16:48:41.90 +60:19:42.90 RXJ1648.7+6019 ACIS-S NONE 100.0000
==========================================================================================
Proposal Number: 08800256
Proposal Title: Observations of a Distant X-ray Luminous Luminous Cluster of
Galaxies
PI: Melvlle Ulmer
Subject Category: CLUSTERS OF GALAXIES
Abstract: A key to understanding cluster evolution is to study distant clusters
of galaxies in X-rays. We propose to observe with Chandra, XMM-Newton, and
Spitzer Cl J1257+4738 (CL1257). CL1257 is the most distant (z=0.866) cluster
found in the SHARC survey and the second most X-ray luminous cluster above
z=0.85. The data will help to determine the global physical properties of CL1257
and its global dynamical state. With recent Gemini data we found 4 out of 6
cluster member galaxies to have [OII] 3727 emission lines, implying recent
starburst activity. A compilation of luminosity versus redshift of known clusters
above z=0.85 suggests that clusters do not reach their peak X-ray luminosity
until z=0.9.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:57:09.70 +47:38:02.50 RXJ 1257+4738 ACIS-S NONE 40.0000
==========================================================================================
Proposal Number: 08800394
Proposal Title: Cluster and AGN interaction in 2A 0335+096
PI: Jeremy Sanders
Subject Category: CLUSTERS OF GALAXIES
Abstract: We propose to make an 86 ks observation of the bright, nearby galaxy
cluster 2A 0335+096. The core the cluster shows a wealth of interesting
substructure. A deep observation will enable us to make detailed comparisons of
its central radio source with the surrounding gas, and examine an apparent
shock-like feature. This will allow us to further examine the role of AGN heating
in the cores of galaxy clusters. There are few targets as bright and nearby as
this one, with such an active source and no deep observation.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
03:38:40.80 +09:58:05.60 2A 0335+096 ACIS-S NONE 86.0000
==========================================================================================
Proposal Number: 08800398
Proposal Title: The cluster core of Abell 2204: AGN interaction and cold fronts
PI: Jeremy Sanders
Subject Category: CLUSTERS OF GALAXIES
Abstract: Abell 2204 is one of the most X-ray luminous clusters in the local
universe. We propose an 80 ks observation of the cluster to study the physics in
the cluster core in detail. The main aim of the proposal is to accurately examine
the role of AGN feedback in the dense cluster core, including bubbles and sound
waves. We also wish examine the cold fronts in depth. Furthermore, this cluster
is an excellent target for the gas mass fraction method of obtaining cosmological
parameters.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
16:32:47.20 +05:34:32.10 Abell 2204 ACIS-I NONE 80.0000
==========================================================================================
Proposal Number: 08800424
Proposal Title: IGM in galaxy groups with dominant elliptical galaxy; optically
selected fossils
PI: Habib Khosroshahi
Subject Category: CLUSTERS OF GALAXIES
Abstract: We propose to observe a well-defined sample of 6 redshift-selected
local galaxy groups, selected from 2dfGRS; each dominated by a single giant
elliptical galaxy. The observation will enable us to test the hypothesis that
most of the galaxy merging which builds up giant ellipticals actually takes place
in collapsed groups. If this hypothesis is true, then we expect the great
majority of purely optically selected fossil groups to show group-scale X-ray
emission. In addition this study will significantly increase the number of known
fossil groups - which show remarkable differences in their IGM and dark matter
properties compared to non-fossil groups and cluster - and establish an economic
and efficient method for finding further systems.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:16:25.80 -27:07:05.00 Group ID 1635 ACIS-S NONE 20.0000
03:14:33.10 -34:07:42.00 Group ID 1635 ACIS-S NONE 10.0000
13:45:39.80 -05:30:33.00 Group ID 1404 ACIS-S NONE 10.0000
22:12:20.70 -25:18:29.00 Group ID 2515 ACIS-S NONE 20.0000
==========================================================================================
Proposal Number: 08800460
Proposal Title: A search for clusters around luminous radio-quiet FRI quasars
PI: Andrew Fabian
Subject Category: CLUSTERS OF GALAXIES
Abstract: Most clusters have a central peak coinciding with a radio source, so
searching for clusters underlying distant radio sources seems a promising method
for finding distant clusters. Unfortunately the method has so far failed to find
distant MASSIVE clusters. This could be because very powerful FRII radio sources
have been targetted when the right population - FRI quasars - has not been
studied. Most central cluster radio sources in the local Universe are of the FRI
type and most quasars are radio quiet (or weak, as are FRI quasars). We propose
to observe 5 FRI quasars over the redshift range 0.6-2.1 to search for underlying
cluster emission.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
10:23:15.80 +36:04:35.40 7C1023+3604 ACIS-S NONE 20.0000
10:30:21.50 +43:09:07.80 7C1030+4309 ACIS-S NONE 20.0000
10:37:15.40 +46:50:14.30 7C1037+4650 ACIS-S NONE 20.0000
10:40:22.80 +44:49:36.70 7C1040+4449 ACIS-S NONE 20.0000
10:52:55.50 +45:47:49.10 7C1052+4547 ACIS-S NONE 20.0000
==========================================================================================
Proposal Number: 08800597
Proposal Title: The Active Galaxy Population in a Complex, Four-Way Merger at z
= 0.84
PI: Lori Lubin
Subject Category: CLUSTERS OF GALAXIES
Abstract: We propose a joint Chandra/VLA program to map the active galaxy
population in a complex merger of four groups at z = 0.84. Combined with
supporting data, the Chandra and VLA observations will allow us to measure the
properties of X-ray and radio sources over the full structure, study
AGN/starburst host galaxies to determine what causes gas-fueling events, and
determine the effect of dynamics on the nuclear activity and gas content of
galaxies in an actively-forming cluster. Because galaxy environment changes
dramatically during the course of vigorous assembly, active clusters offer us the
unique opportunity to probe the physical effects on galaxies as they assemble
into denser regions. As such, this survey will begin to constrain how large-scale
processes influence galaxy-scale events.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:23:52.30 +04:22:34.20 Cl 0023+0423 ACIS-I NONE 50.0000
==========================================================================================
Proposal Number: 08800638
Proposal Title: The Dynamics of the Unusually Violent Merger in Abell 2744
PI: Joshua Kempner
Subject Category: CLUSTERS OF GALAXIES
Abstract: We propose to observe A2744, a z=0.31 cluster undergoing an unusually
violent merger, one of only a few with Mach number >2. The cluster hosts one of
the most luminous known radio halos, powered by relativistic electrons
accelerated in the merger. Combined with our recently obtained radio data and
proposed optical spectroscopy of cluster galaxies, Chandra will allow us to put
extremely tight constraints on the dynamical state of the cluster. We will
measure the merger velocity using the subclusters' cool cores and the temperature
enhancement in shocked gas, and will determine the dynamical state of the small
infalling subcluster to the NW. Finally, we will determine the acceleration
mechanism of the radio-emitting electrons using correlations between radio
brightness and gas temperature.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:14:19.40 -30:23:29.50 Abell 2744 ACIS-I NONE 100.0000
==========================================================================================
Proposal Number: 08800647
Proposal Title: Testing the merger-radio halo connection in the massive galaxy
cluster RXCJ2003.5-2323
PI: Simona Giacintucci
Subject Category: CLUSTERS OF GALAXIES
Abstract: We propose 50 ks Chandra observation of the massive galaxy cluster
RXCJ2003.5-2323. In this cluster we discovered a giant and powerful radio halo
with an exceptional linear size of 1.4 Mpc and a clumpy/filamentary radio
morphology. The cluster redshift (z=0.3171) is among the highest with a giant
radio halo detection. In the framework of the turbulent re-acceleration scenario
for the origin of giant radio halos, the presence of an ongoing major merger is
required to explain the formation, size and high radio power of the halo source
in RXCJ2003.5-2323. The proposed observation will allow us to test the expected
highly disturbed dynamical state of the cluster and study in detail the radio -
X-ray connection.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
20:03:30.40 -23:23:05.00 RXCJ2003.5-2323 ACIS-I NONE 50.0000
==========================================================================================
Proposal Number: 08800709
Proposal Title: AGN Heating of Clusters and Restarting Radio Galaxies
PI: Nazirah Jetha
Subject Category: CLUSTERS OF GALAXIES
Abstract: Heating by AGN is widely believed to be an important mechanism in
solving the cluster centre `cooling flow problem', but direct observations of AGN
heating are rare. We propose to observe the restarting radio source hosted by the
BCG in the cluster Abell 695. This AGN is at the beginning of a duty cycle, and
is feeding small young radio lobes which should be expanding supersonically and
driving shocks into the ICM. This is the only cluster-centre source we are aware
of where the radio and X-ray data are consistent with ongoing shock heating. We
intend to search for signs of shock heating of the ICM, measure the temperature
of any shocked material, and by comparison with systems such as Centaurus A,
further our understanding of the important shock-heating phase of AGN cluster
energy input.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
08:41:13.00 +32:24:59.00 Abell 695 ACIS-S NONE 90.0000
==========================================================================================
Proposal Number: 08800737
Proposal Title: Abell 119: Cluster Mergers and the Origin of Narrow-Angle-Tail
Radio Galaxies
PI: Craig Sarazin
Subject Category: CLUSTERS OF GALAXIES
Abstract: Abell 119 has two parallel Narrow-Angle-Tail (NAT) radio galaxies
projected near its center. Although the dynamic state of the cluster has been
uncertain, our short Chandra image showed a central cold front and possible north
merger shock, which suggest the cluster is near core passage in a merger. A
longer Chandra observation will be used to derive the merger kinematics from the
cold front and merger shock. We will determine if the NAT-ICM relative motion is
due to galaxy orbits or the cluster merger, which are the two main theories. We
will look for interactions between the NATs and the intracluster gas, and see if
the NATs have displaced the ICM. We will determine if the large Faraday rotations
of the NATs are due to a dense sheath around them or to a large intracluster
magnetic field.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
00:56:16.10 -01:15:18.40 Abell 119 ACIS-I NONE 49.0000
==========================================================================================
Proposal Number: 08800834
Proposal Title: The Nature of the Intracluster Medium at z=1.45
PI: Spencer Stanford
Subject Category: CLUSTERS OF GALAXIES
Abstract: We propose to obtain Chandra imaging of a newly discovered massive
galaxy cluster at z=1.45, currently the highest known for an X-ray selected
cluster. The cluster was found in the XMM Cluster Survey using archival data, and
confirmed spectroscopically using Keck. The new data would allow us to determine
the temperature of the intracluster medium, its spatial structure, and if there
is any contamination from point sources within or outside of the cluster.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
22:15:59.00 -17:38:05.00 XMM2215-1738 ACIS-S NONE 100.0000
==========================================================================================
Proposal Number: 08800836
Proposal Title: The Core Dark Matter Profile of the Radio-Quiet Cluster A3827
PI: Luca Zappacosta
Subject Category: CLUSTERS OF GALAXIES
Abstract: Competing theoretical models of the radial profiles of dark matter
halos reveal their differences especially in the central regions of the halos.
Typically clusters that are observed to be relaxed on radial scales of several
100 kpc exhibit disturbed X-ray and radio morphologies within their cores. We
have identified a promising target, A3827, that does not possess a central radio
source and appears to be very relaxed from inspection of its XMM image. We
propose a 50 ks observation to obtain a precise measurement of the radial mass
profile down to ~0.015 r_vir, or as far down as Chandra reveals the cluster to be
undisturbed. The radial profile will be compared to theoretical models,
particularly pure NFW and adiabatic contraction, as well as profiles obtained for
other clusters.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
22:01:53.80 -59:56:51.60 A3827 ACIS-S NONE 50.0000
==========================================================================================
Proposal Number: 08800885
Proposal Title: Ripples, Fronts, Bubbles, and a Tunnel: A Deep Observation of
Abell 262
PI: Elizabeth Blanton
Subject Category: CLUSTERS OF GALAXIES
Abstract: Analysis of a short Chandra observation of the cooling core cluster
Abell 262 reveals several features that warrant further study. In the cluster
center, both a bubble and tunnel are found coincident with radio emission from
the central AGN. A possible ghost bubble is identified with low-frequency radio
emission. A ripple or shock front feature has been revealed and may be due to a
previous outburst from the radio source. We propose to study this ripple/front in
detail, detect hot gas within the bubble and tunnel, search for additional ghost
bubbles, and measure the cooling rate of the X-ray gas found in knot-like
features in the cluster center that also emit optical line emission.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
01:52:46.50 +36:09:07.90 Abell 262 ACIS-S NONE 120.0000
==========================================================================================
Proposal Number: 08800894
Proposal Title: LIVE - Life in Vicious Environments: Mergers, shocks and cold
fronts in super-cluster members A1750, A3558, and A1644.
PI: Daniel Hudson
Subject Category: CLUSTERS OF GALAXIES
Abstract: Understanding cluster mergers is imperative to our understanding of
cluster formation. Our current understanding of the physics involved in mergers
is poor because of the high resolution needed for such simulations and the lack
of observational data. One of the most startling revelations of Chandra was the
existence of cold fronts, the absence of strong shocks and lack of directly
detected weak shocks. With its superior PSF Chandra is the best suited instrument
for detecting sharp surface brightness and temperature discontinuities associated
with shocks and cold fronts and making the necessary measurements to constrain
the physical processes involved. We propose deep Chandra observations of the
merging clusters A1750, A3558, and A1644.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:57:09.60 -17:24:36.00 Abell1644 ACIS-I NONE 52.0000
==========================================================================================
Proposal Number: 08800933
Proposal Title: The Impact of Nuclear Outbursts on the Surrounding Atmosphere in
the NGC5846 Group
PI: William Forman
Subject Category: CLUSTERS OF GALAXIES
Abstract: We propose a deep ACIS-I observation of the NGC5846 galaxy group.The
core of NGC5846 shows an X-ray cavity filled with radio emitting plasma, with
"knots" of X-ray emission in the bright rim around the radio lobe, and several
"edges" in its surface brightness distribution. We will measure the temperature
structure in the rim of emission around the radio lobe, determine the mechanical
power associated with the X-ray cavity, and measure the detailed temperature and
entrophy structure of the gas in the core. Most importantly, since the gas in the
group is cool (1 keV) we can measure accurately the temperature structure across
the bright surface brightness edges to determine if these edges are due to shocks
from the radio outburst or due to sloshing of the gas in the core.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
15:06:29.30 +01:36:20.00 NGC5846 ACIS-I NONE 90.0000
==========================================================================================
Proposal Number: 08800951
Proposal Title: Hot Gas in Spiral-Dominated Groups: Evolution and the Formation
of Halos
PI: JAN VRTILEK
Subject Category: CLUSTERS OF GALAXIES
Abstract: The group environment --- the locus of the majority of galaxies in the
present-day Universe --- is also a particularly suitable environment for the
examination of one of the central processes of galaxian evolution: the
presumptive merging of spirals to form ellipticals, which is in good part already
over in rich clusters. We here propose to observe two spiral-dominated groups
selected for their proximity, compactness, and X-ray brightness. Both have little
or no Chandra data, which when obtained will clarify the presence, distribution,
and amount of diffuse intragroup gas; examine its temperature and heavy element
abundances as a clue to its origins; and relate the intragroup medium to the
influences of individual galaxies.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
22:36:00.30 +33:58:12.90 HCG 92 ACIS-S NONE 100.0000
==========================================================================================
Proposal Number: 08800952
Proposal Title: A Complete Baryon Census in a Nearby Galaxy Group
PI: John Mulchaey
Subject Category: CLUSTERS OF GALAXIES
Abstract: We propose an ACIS-I mosaic of the NGC2563 group to study the X-ray
properties of the group galaxies out to the virial radius of the system. The
proposed observations will provide important observational constraints on the
mechanisms that drive galaxy evolution in groups by allowing us to study how the
properties of galaxies vary with distance from the group center, IGM and galaxy
density. The Chandra data will allow us to study the hot ISM halos of individual
galaxies as well as the more extended intragroup medium component, which combined
with our existing optical and HI data will provide a complete census of all of
the major baryonic components in the group.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
08:18:00.00 +20:49:42.20 NGC2563-P12 ACIS-I NONE 30.0000
08:18:50.80 +21:42:31.10 NGC2563-P11 ACIS-I NONE 30.0000
08:19:15.00 +21:20:56.80 NGC2563-P8 ACIS-I NONE 30.0000
08:19:15.10 +21:04:59.40 NGC2563-P6 ACIS-I NONE 30.0000
08:19:15.30 +20:49:00.40 NGC2563-P7 ACIS-I NONE 30.0000
08:19:17.70 +20:33:33.70 NGC2563-P13 ACIS-I NONE 30.0000
08:20:23.70 +20:49:01.60 NGC2563-P3 ACIS-I NONE 30.0000
08:20:23.70 +21:05:00.50 NGC2563-P1 ACIS-I NONE 50.0000
08:20:23.70 +21:20:57.90 NGC2563-P5 ACIS-I NONE 30.0000
08:21:32.10 +20:49:01.00 NGC2563-P2 ACIS-I NONE 30.0000
08:21:32.20 +21:04:60.00 NGC2563-P10 ACIS-I NONE 30.0000
08:21:32.30 +21:20:57.40 NGC2563-P4 ACIS-I NONE 30.0000
08:22:40.20 +21:02:03.90 NGC2563-P9 ACIS-I NONE 30.0000
08:23:16.40 +21:23:09.90 NGC2563-P14 ACIS-I NONE 30.0000
==========================================================================================
Proposal Number: 08801033
Proposal Title: An X-ray/lensing calibration of cluster mass estimates
PI: Stephen Murray
Subject Category: CLUSTERS OF GALAXIES
Abstract: We have compiled the largest statistically complete sample of galaxy
clusters with weak lensing mass estimates. 35 of the 36 clusters in our sample
have been observed, or are scheduled for observation with Chandra. We propose a
15ks Chandra observation of A1576 to complete the sample, creating a homogeneous
X-ray/lensing dataset. For the first time, X-ray and weak lensing mass estimates
will be cross-calibrated in a volume limited sample. This will facilitate many
important results, including the measurement of systematic effects in the mass
estimates and their effect on derived cosmological constraints; improved
calibration of the X-ray observable - mass scaling relations; and accurate
measurements of cluster baryon fractions.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
12:36:56.90 +63:11:16.80 A1576 ACIS-I NONE 15.0000
==========================================================================================
Proposal Number: 08801039
Proposal Title: The Halo Structure of RCS2-2327.4-0204
PI: Michael Gladders
Subject Category: CLUSTERS OF GALAXIES
Abstract: We propose ACS, NICMOS, and Chandra observations of the extraordinary
and newly discovered galaxy cluster: RCS2-2327.4-0204 at z=0.7. This cluster
shows 3 or more arcs in ground-based imaging. The target cluster is selected from
a large ongoing survey with a well-defined search volume, which allows us to
compare our results to expectations from simulations. We will compare the lensing
derived mass profiles to the X-ray equivalent measures; this will illuminate
whether the dominant baryonic component is in equilibrium with the potential.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
23:27:28.00 -02:04:20.80 RCS 2327-0204 ACIS-S NONE 25.0000
******************************************************************************************
EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS
******************************************************************************************
==========================================================================================
Proposal Number: 08900073
Proposal Title: THE CHANDRA-COSMOS SURVEY
PI: Martin Elvis
Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: We propose the Chandra-COSMOS survey which will provide an
unprecedented combination of contiguous area, depth and resolution. 36 densely
tiled observations will cover the central 0.7 sq.deg. COSMOS field to a uniform
200ksec depth. COSMOS explores the coupled evolution of galaxies, dark matter
halos and AGNs (massive black holes) largely free of cosmic variance. COSMOS is a
comprehensive survey including: HST, Spitzer, Subaru, VLT, Magellan, VLA, MAMBO,
GALEX, & potentially EVLA & ALMA. Chandra resolution & sensitivity enables the
study of large scale phenomena: (1) influence of the surrounding environment; (2)
interaction between galaxies; (3) influence of groups and clusters: (4) BH growth
and census; (5) star formation and stellar populations; (6) feedback from
starbursts and AGNs.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
09:59:08.80 +01:57:24.10 C-COSMOS6-6 ACIS-I NONE 50.0000
09:59:08.80 +02:05:24.00 C-COSMOS5-6 ACIS-I NONE 50.0000
09:59:08.80 +02:13:23.90 C-COSMOS4-6 ACIS-I NONE 50.0000
09:59:08.80 +02:21:24.10 C-COSMOS3-6 ACIS-I NONE 50.0000
09:59:08.80 +02:29:24.00 C-COSMOS2-6 ACIS-I NONE 50.0000
09:59:08.80 +02:37:23.90 C-COSMOS1-6 ACIS-I NONE 50.0000
09:59:40.80 +01:57:24.10 C-COSMOS6-5 ACIS-I NONE 50.0000
09:59:40.80 +02:05:24.00 C-COSMOS5-5 ACIS-I NONE 50.0000
09:59:40.80 +02:13:23.90 C-COSMOS4-5 ACIS-I NONE 50.0000
09:59:40.80 +02:21:24.10 C-COSMOS3-5 ACIS-I NONE 50.0000
09:59:40.80 +02:29:24.00 C-COSMOS2-5 ACIS-I NONE 50.0000
09:59:40.80 +02:37:23.90 C-COSMOS1-5 ACIS-I NONE 50.0000
10:00:12.80 +01:57:24.10 C-COSMOS6-4 ACIS-I NONE 50.0000
10:00:12.80 +02:05:24.00 C-COSMOS5-4 ACIS-I NONE 50.0000
10:00:12.80 +02:13:23.90 C-COSMOS4-4 ACIS-I NONE 50.0000
10:00:12.80 +02:21:24.10 C-COSMOS3-4 ACIS-I NONE 50.0000
10:00:12.80 +02:29:24.00 C-COSMOS2-4 ACIS-I NONE 50.0000
10:00:12.80 +02:37:23.90 C-COSMOS1-4 ACIS-I NONE 50.0000
10:00:44.80 +01:57:24.10 C-COSMOS6-3 ACIS-I NONE 50.0000
10:00:44.80 +02:05:24.00 C-COSMOS5-3 ACIS-I NONE 50.0000
10:00:44.80 +02:13:23.90 C-COSMOS4-3 ACIS-I NONE 50.0000
10:00:44.80 +02:21:24.10 C-COSMOS3-3 ACIS-I NONE 50.0000
10:00:44.80 +02:29:24.00 C-COSMOS2-3 ACIS-I NONE 50.0000
10:00:44.80 +02:37:23.90 C-COSMOS1-3 ACIS-I NONE 50.0000
10:01:16.80 +01:57:24.10 C-COSMOS6-2 ACIS-I NONE 50.0000
10:01:16.80 +02:05:24.00 C-COSMOS5-2 ACIS-I NONE 50.0000
10:01:16.80 +02:13:23.90 C-COSMOS4-2 ACIS-I NONE 50.0000
10:01:16.80 +02:21:24.10 C-COSMOS3-2 ACIS-I NONE 50.0000
10:01:16.80 +02:29:24.00 C-COSMOS2-2 ACIS-I NONE 50.0000
10:01:16.80 +02:37:23.90 C-COSMOS1-2 ACIS-I NONE 50.0000
10:01:48.80 +01:57:24.10 C-COSMOS6-1 ACIS-I NONE 50.0000
10:01:48.80 +02:05:24.00 C-COSMOS5-1 ACIS-I NONE 50.0000
10:01:48.80 +02:13:23.90 C-COSMOS4-1 ACIS-I NONE 50.0000
10:01:48.80 +02:21:24.10 C-COSMOS3-1 ACIS-I NONE 50.0000
10:01:48.80 +02:29:24.00 C-COSMOS2-1 ACIS-I NONE 50.0000
10:01:48.80 +02:37:23.90 C-COSMOS1-1 ACIS-I NONE 50.0000
==========================================================================================
Proposal Number: 08900380
Proposal Title: Discovering the absorbed AGN population responsible for the hard
X-ray background
PI: Simona Soldi
Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: The X-ray background peaks around 30 keV and is supposed to be
dominated by absorbed type 2 AGN. Up to now the majority of these sources have
not been found. INTEGRAL provides an opportunity to detect highly absorbed
sources. Deep extragalactic observations provide an efficient tool to shed light
on this question by providing samples of new hard X-ray sources. Many new and up
to now unidentified sources were found by our team in a deep extragalactic
observation of 2.5 Msec in the Virgo region. We ask to observe two of these new
sources for which Chandra will: provide a precise position (allowing for optical
follow up), give a measurement of the absorption column density, provide an X-ray
spectral description and provide an information on the redshift when the Fe lines
are detected.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
13:05:19.00 +11:39:09.00 IGR J1305+1139 HRC-I NONE 5.0000
13:05:19.00 +11:39:09.00 IGR J1305+1139 ACIS-S NONE 20.0000
13:35:41.00 +07:09:58.00 IGR J1335+0710 HRC-I NONE 5.0000
13:35:41.00 +07:09:58.00 IGR J1335+0710 ACIS-S NONE 20.0000
==========================================================================================
Proposal Number: 08900627
Proposal Title: AGN in the Cosmic Web: A Proto-Cluster at z=2.3
PI: Kirpal Nandra
Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: Steidel et al. (2005) have recently reported the discovery of a highly
significant overdensity of galaxies at z=2.3 in the field of the QSO HS 1700+643
(z=2.72). Galaxies in this structure have on average twice the age and mass of
comparable field galaxies, consistent with their early formation and rapid
evolution in a dense environment. Enhanced interactions and mergers in this
environment should also result in a higher AGN fraction, and we have tentative
evidence for this based on archival (50ks) Chandra data. Here we propose deeper
(200ks) ACIS-I observations to reach Seyfert luminosities at the proto-cluster
redshift, and establish definitively whether or not dense large-scale structure
environments trigger enhanced AGN activity.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
17:00:50.60 +64:11:29.10 HS 1700+643 ACIS-I NONE 40.0000
17:00:50.60 +64:11:29.10 HS 1700+643 ACIS-I NONE 160.0000
==========================================================================================
Proposal Number: 08900745
Proposal Title: The Chandra Deep Proto-cluster Field: Black-Hole Growth and
Feedback in Dense Environments
PI: David Alexander
Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: Deep X-ray surveys have revolutionized our understanding of the growth
of black holes (SMBH). But these surveys only sample low-density regions at
high-z due to their limited solid angle. There is no comparably sensitive X-ray
census of AGN in high-density regions at high-z. Such environments evolve into
the most massive clusters at z=0, regions which exhibit remarkable trends in
galaxy properties - which may reflect early interactions between SMBHs and their
host galaxies. A survey of a proto-cluster at high-z would provide a unique view
of the interplay of the growth of galaxies and their SMBHs. Here we propose a
400ks survey of the best-studied proto-cluster at high-z, to enable the first
definitive study of the growth of SMBHs and their host galaxies in a dense,
young, environment.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
22:17:35.90 +00:15:58.90 SSA22 Protocluster ACIS-I NONE 80.0000
22:17:35.90 +00:15:58.90 SSA22 Protocluster ACIS-I NONE 160.0000
22:17:35.90 +00:15:58.90 SSA22 Protocluster ACIS-I NONE 160.0000
==========================================================================================
Proposal Number: 08900955
Proposal Title: WHIM in Large-Scale Structures
PI: Luca Zappacosta
Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: Simulations and observations indicate that galaxy overdensities are
good tracers of the dark matter large-scale structures and therefore of the
diffuse warm-hot phase (WHIM) that should be associated with them. The WHIM in
these large-scale structures should have large column densities, and therefore
should be much easier to detect than the low density WHIM probed so far through
absorption line studies. However, this efficient method of investigating WHIM has
yet to be exploited. We have identified 8 bright blazars located just in the
background of 5 known superclusters. We propose to probe and study the WHIM in
these structures by identifying the associated absorption lines in the spectrum
of these AGNs during their outbursts, through TOO observations for a total of
200ks with HRC-S/LETG.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
01:23:08.90 +34:20:50.00 1ES 0120+340 HRC-S LETG 100.0000
02:32:48.60 +20:17:17.00 1ES 0229+200 HRC-S LETG 100.0000
10:15:04.20 +49:26:00.60 1ES 1011+496 HRC-S LETG 100.0000
12:15:11.00 +07:32:07.80 1ES 1212+078 HRC-S LETG 100.0000
16:53:52.20 +39:45:36.60 Mkn 501 HRC-S LETG 100.0000
22:02:43.30 +42:16:40.00 BL Lac HRC-S LETG 100.0000
23:23:52.50 +42:10:55.00 1ES 2321+419 HRC-S LETG 100.0000
23:59:07.80 -30:37:41.00 H 2356-309 HRC-S LETG 100.0000
******************************************************************************************
GALACTIC DIFFUSE EMISSION AND SURVEYS
******************************************************************************************
==========================================================================================
Proposal Number: 08910041
Proposal Title: ChICAGO GTO: Chandra Identification of Compact ASCA Galactic
Objects
PI: Stephen Murray
Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: The Milky Way teems with thousands of X-ray sources, tracing a variety
of exotic stellar populations. Most sources with X-ray fluxes >~1e-10 erg/cm^2/s
were long ago identified as luminous X-ray binaries. In contrast, recent Chandra
and XMM surveys have characterized the population for X-ray fluxes in the range
~5e-15 to ~5e-13 erg/cm^2/s. However, between these regimes lies a large
population which is largely unidentified. We consequently propose to localize the
compact, unidentified sources in the ASCA Galactic Plane Survey. We can then
complete the demography of Galactic X-ray sources, from Sco X-1 down to the
faintest sources known. These observations will also yield important new examples
of active stars, magnetars, accreting systems, energetic pulsars, and young
supernova remnants.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
15:53:31.70 -53:47:38.40 AX J155331-5347 ACIS-S NONE 2.3000
16:22:08.40 -50:05:42.00 AX J162208-5005 ACIS-S NONE 1.6000
16:22:47.00 -49:46:55.20 AX J162246-4946 ACIS-S NONE 2.8000
16:32:52.30 -47:46:08.40 AX J163252-4746 HRC-I NONE 2.5000
16:37:51.40 -46:56:38.40 AX J163751-4656 HRC-I NONE 1.3000
16:52:17.50 -44:14:06.00 AX J165217-4414 ACIS-S NONE 1.9000
17:04:44.60 -41:09:36.00 AX J170444-4109 ACIS-S NONE 2.9000
17:05:55.70 -41:04:58.80 AX J170555-4104 ACIS-S NONE 2.5000
17:19:10.30 -36:52:51.60 AX J171910-3652 ACIS-S NONE 2.5000
17:26:23.30 -35:16:48.00 AX J172623-3516 ACIS-S NONE 2.4000
17:26:42.70 -35:40:48.00 AX J172642-3540 HRC-I NONE 1.0000
17:35:18.20 -32:37:01.20 AX J173518-3237 ACIS-S NONE 1.6000
17:35:48.00 -32:07:12.00 AX J173548-3207 ACIS-S NONE 2.1000
17:36:28.10 -31:41:09.60 AX J173628-3141 ACIS-S NONE 2.6000
17:53:31.40 -25:38:38.40 AX J175331-2538 ACIS-S NONE 2.1000
18:08:16.80 -20:21:43.20 AX J180816-2021 ACIS-S NONE 2.2000
18:11:16.80 -18:28:15.60 AX J181116-1828 ACIS-S NONE 2.8000
18:11:20.60 -19:13:37.20 AX J181120-1913 ACIS-S NONE 2.3000
18:12:13.90 -18:42:25.20 AX J181213-1842 ACIS-S NONE 3.1000
18:17:05.30 -16:07:55.20 AX J181705-1607 ACIS-S NONE 2.7000
18:35:18.20 -07:54:39.60 AX J183518-0754 HRC-I NONE 3.0000
18:36:07.70 -07:56:34.80 AX J183607-0756 ACIS-S NONE 2.6000
18:40:08.40 -05:43:51.60 AX J184008-0543 ACIS-S NONE 1.7000
18:44:01.00 -03:55:33.60 AX J184400-0355 ACIS-S NONE 3.4000
18:44:47.00 -03:05:09.60 AX J184447-0305 ACIS-S NONE 2.8000
18:46:53.00 -02:40:26.40 AX J184652-0240 ACIS-S NONE 2.0000
18:55:51.80 +01:29:27.60 AX J185551+0129 HRC-I NONE 1.0000
18:57:50.90 +02:40:19.20 AX J185750+0240 ACIS-S NONE 2.1000
18:59:05.30 +03:33:43.20 AX J185905+0333 ACIS-S NONE 1.6000
19:05:34.80 +06:59:02.40 AX J190534+0659 ACIS-S NONE 2.0000
19:07:49.70 +08:03:32.40 AX J190749+0803 ACIS-S NONE 3.3000
19:08:14.40 +08:32:27.60 AX J190814+0832 ACIS-S NONE 3.4000
19:41:53.00 +22:51:43.20 AX J194152+2251 ACIS-S NONE 2.8000
19:49:51.60 +25:34:22.80 AX J194951+2534 HRC-I NONE 1.0000
==========================================================================================
Proposal Number: 08910048
Proposal Title: High Resolution Studies of Interstellar Absorption with Cyg X-2
PI: Claude Canizares
Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: Recent studies have shown that a significant fraction of the
interstellar medium (ISM) is ionized. High resolution studies of various bright
X-ray binaries showed X-ray absorption features of the cool, warm, and hot ISM
phases. We want re-visit the X-ray binary Cyg X-2 in a long cc-mode exposure for
its bright soft X-ray spectrum as well as its location with respect to the
Galactic plane. We plan to resolve the full fine structure of absorption near the
O K, Fe L, and Ne K edges. In addition we will detect highly ionized lines not
only at Ne, as previously done, but now also at O through the enhanced
sensitivity of our observation. This allows us to determine ionization fractions
for O and Ne at all phases as well as determine relative ionized abundances at
high galactic lattitude.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
21:44:41.70 +38:19:10.60 Cyg X-2 ACIS-S HETG 150.0000
==========================================================================================
Proposal Number: 08910231
Proposal Title: Accurate Determination of the Dust-Scattering Halo Around Cyg
X-2
PI: Frederick Seward
Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: In a short time, one million events can be collected from the bright
dust-scattered halo around CYG X-2. The ACIS observation is the first serious
attempt to observe azimuthal structure in a dust-scattering halo. If structure
due to nonuniformity of the gas and dust permits, we will measure the quadrupole
moment of the halo which might indicate scattering from partially-aligned
non-spherical grains in the path to the source. Systematic instrument effects
will be identified by observing at different roll angles. We will also extract
the radial dependence of surface brightness from 5" to 15' in several energy
bands and use these data to investigate the applicability of several dust models.
Model parameters will be derived concerning size and spatial distribution of dust
particles.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
21:44:41.20 +38:19:18.00 Cyg X-2 HRC-I NONE 2.5000
21:44:41.20 +38:19:18.00 Cyg X-2 HRC-I NONE 2.5000
21:44:41.20 +38:19:18.00 Cyg X-2 HRC-I NONE 2.5000
21:44:41.20 +38:19:18.00 Cyg X-2 HRC-I NONE 2.5000
21:44:41.20 +38:19:18.00 Cyg X-2 ACIS-S NONE 24.0000
==========================================================================================
Proposal Number: 08910631
Proposal Title: Measuring the Dust Grains and Distance to X Persei Via Its X-ray
Halo
PI: Randall Smith
Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: We propose to observe the X-ray halo of the high mass X-ray binary
pulsar X Per to measure interstellar dust grains along the line of sight (LOS)
and to determine the distance to X Per. The X-ray halo is formed by scattering
from grains along the LOS, which for X Per appear to be concentrated in one
molecular cloud. Unlike many other X-ray halo observations, this low-absorption
high-latitude sightline is well-characterized from absorption spectroscopy done
with HST, Copernicus, and FUSE. This halo observation will measure the distance
to the cloud and the dust size distribution in it. We will also be able to
determine the distance to X Per by measuring the time delayed pulses in the X-ray
halo.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
03:55:23.10 +31:02:45.00 X Persei ACIS-I NONE 50.0000
==========================================================================================
Proposal Number: 08910934
Proposal Title: Combining X-ray Scattering with Extinction, Absorption, and
Emission: Multiwavelength Constraints for Dust Grain Models
PI: Lynne Valencic
Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: While interstellar dust is vitally important to the Galaxy, being
necessary both in stellar system and molecule formation, the grains' exact nature
remains mysterious. An improved understanding of dust will lead to robust models
that can more accurately recover an object's intrinsic spectral energy
distribution, and will allow us to probe the grains' environment. Current grain
models, constrained by UV-NIR regimes and elemental abundances, are degenerate;
we must look to other wavelength regimes to break the degeneracy and thus produce
more realistic models. X-ray dust halos observed with Chandra/ACIS are an
excellent, and mostly untapped, grain characteristic diagnostic and can provide
badly needed constraints on grain models.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
05:38:54.60 +26:18:56.80 HD 245770 ACIS-I NONE 70.0000
==========================================================================================
Proposal Number: 08911036
Proposal Title: Chandra Identification of Compact ASCA Galactic Objects - Part
II
PI: Stephen Murray
Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: X-ray sources in the Galactic plane trace a variety of exotic
populations. Most sources with X-ray fluxes above 1e-11 erg/cm^2/s are well-known
objects, while below 1e-13 erg/cm^2/s, AGN, CVs, and active stars dominate.
However, many low-latitude sources lie between these two regimes, corresponding
to young populations of pulsars, magnetars, hot stars, supernova remnants and
star clusters. To derive the birth-rates, lifetimes and distributions of these
relatively rare sources, we propose to localize the unidentified objects in the
60% of the Galactic disk covered by the ASCA Galactic Plane Survey. Combined with
multi-wavelength follow-up and the results of previous surveys, this will
complete the demography of Galactic X-ray sources, from Sco X-1 down to the
faintest sources known.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
-----------------------------------------------------------------------------------
14:31:49.00 -60:21:10.80 AX J143148-6021 ACIS-S NONE 2.5000
14:45:19.20 -59:49:48.00 AX J144519-5949 ACIS-S NONE 1.6000
14:45:47.00 -59:31:55.20 AX J144547-5931 ACIS-S NONE 2.6000
14:47:01.70 -59:19:48.00 AX J144701-5919 ACIS-S NONE 1.5000
15:41:22.10 -55:22:01.20 AX J154122-5522 ACIS-S NONE 2.2000
16:54:20.40 -43:37:40.80 AX J165420-4337 HRC-I NONE 1.4000
16:56:46.30 -42:39:36.00 AX J165646-4239 ACIS-S NONE 2.7000
17:00:18.00 -42:20:24.00 AX J170017-4220 ACIS-S NONE 1.5000
17:00:53.00 -42:10:30.00 AX J170052-4210 ACIS-S NONE 1.9000
17:01:13.00 -42:12:10.80 AX J170112-4212 HRC-I NONE 1.2000
19:46:22.30 +24:36:46.80 AX J194622+2436 ACIS-S NONE 1.4000
19:49:39.80 +26:31:48.00 AX J194939+2631 ACIS-S NONE 1.6000
