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| Subject Category | PI Name | Title |
|---|---|---|
| NORMAL STARS AND WD | THOMAS AYRES | TORTURED CORONAE IN THE RAPID BRAKING ZONE |
| SN, SNR AND ISOLATED NS | JEFF HESTER | COORDINATED CHANDRA/HST OBSERVATIONS OF THE CRAB NEBULA |
| NORMAL GALAXIES | ANDREA PRESTWICH | THE X-RAY POINT SOURCE POPULATION IN SPIRAL GALAXIES |
| ACTIVE GALAXIES AND QUASARS | IAN GEORGE | DETERMINING THE NATURE OF THE VARIABLE ABSORPTION IN NGC 3783 WITH CHANDRA/HST |
| ACTIVE GALAXIES AND QUASARS | SMITA MATHUR | FINDING THE BARYONS IN THE LOW REDSHIFT UNIVERSE |
| CLUSTERS OF GALAXIES | SPENCER STANFORD | A COMPLETE X-RAY CLUSTER SAMPLE AT Z > 0.8 |
| GALACTIC DIFFUSE EMISSION AND SURVEYS | Q. DANIEL WANG | CHANDRA SURVEY OF THE GALACTIC RIDGE AROUND THE MILKY WAY CENTER |
| EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS | WILLIAM BRANDT | THE CHANDRA DEEP SURVEY OF THE HUBBLE DEEP FIELD NORTH (HDF-N) AREA |
| EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS | RICCARDO GIACCONI | AN ULTRADEEP SURVEY IN THE CHANDRA DEEP FIELD SOUTH |
Proposal Title: TORTURED CORONAE IN THE RAPID BRAKING ZONE
PI: THOMAS AYRES
Subject Category: NORMAL STARS AND WD
Abstract: Deep HETGS exposures of four key G0-G5 giants will address fundamental questions concerning their hot magnetized coronae by determining temperatures and densities, probing chemical fractionation processes, and exploring plasma dynamics. The giants lie in or near the "Rapid Braking Zone" where moderate mass stars undergo a radical transformation of their outer atmospheres, perhaps as a relic magnetosphere is disrupted by the onset of a solar-like dynamo. ACIS-I CCD spectra of five G/K supergiants will explore the even more extreme extension of the RBZ to higher masses: where hot coronae mix freely with cool stellar winds. These are ideal targets to exploit the experience gained in the Emission Line Project studies of the active binaries Capella and HR 1099.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
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10:46:46.10 -49:25:12.00 HD 93497 ACIS-S HETG 80.00
12:51:41.80 +27:32:26.00 HD 111812 ACIS-S HETG 140.00
23:49:40.80 +36:25:31.00 HD 223460 ACIS-S HETG 100.00
Proposal Title: COORDINATED CHANDRA/HST OBSERVATIONS OF THE CRAB NEBULA
PI: JEFF HESTER
Subject Category: SN, SNR AND ISOLATED NS
Abstract: Recent monitoring of the Crab Nebula with the HST and Chandra sheds new light on both the structure and dynamics of the region into which the wind from the Crab pulsar flows. Bright X-rays predominately originate in regions which contain sharp and highly dynamic structure at visible wavelengths, reflecting the short synchrotron lifetime of the most energetic particles in the nebula. We now have a unique opportunity for an intensive coordinated optical/X-ray campaign to study this dynamic structure. We have an approved and scheduled HST program to monitor the Crab at 11-day intervals during 8 months in the 2000-01 observing season. We request sixteen 25 ks observations with the Chandra ACIS to monitor the X-ray structure and spectrum of Crab during the HST campaign.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
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05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 0.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 0.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 0.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 0.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 0.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 0.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 0.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 0.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 25.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 25.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 25.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 25.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 25.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 25.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 25.00
05:34:31.60 +22:00:56.40 CRAB NEBULA ACIS-S NONE 25.00
Proposal Title: THE X-RAY POINT SOURCE POPULATION IN SPIRAL GALAXIES
PI: ANDREA PRESTWICH
Subject Category: NORMAL GALAXIES
Abstract: Emission from discrete sources dominates the X-ray luminosity in spiral galaxies. We propose to survey a sample of nearby spiral galaxies to characterise the properties of the discrete sources. We have chosen nearby, face-on galaxies which span the Hubble sequence for spirals. Chandra's superb imaging capability will allow us to detect sources down to a luminosity of 4e36 erg s^-1 in the ROSAT band. We aim to classify souces as accretion powered binaries (Low or High Mass) or supernova remnants. Our survey will go more than a factor of 20 deeper than the deepest ROSAT pointings of the same galaxies. This data will enable us to look for trends in the characteristics of discrete sources with Hubble type, metallicity and stellar population.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
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00:52:04.60 +47:33:04.00 NGC 278 ACIS-S NONE 40.00
00:52:04.60 +47:33:04.00 NGC 278 ACIS-S NONE 40.00
01:36:41.70 +15:46:59.00 NGC 628 ACIS-S NONE 47.00
01:36:41.70 +15:46:59.00 NGC 628 ACIS-S NONE 47.00
03:17:18.30 -41:06:28.00 NGC 1291 ACIS-S NONE 35.00
08:53:32.80 +51:18:50.00 NGC 2681 ACIS-S NONE 85.00
08:53:32.80 +51:18:50.00 NGC 2681 ACIS-S NONE 85.00
12:22:32.00 +29:53:43.00 NGC 4314 ACIS-S NONE 18.00
12:22:32.00 +29:53:43.00 NGC 4314 ACIS-S NONE 18.00
13:37:00.80 -29:51:59.00 NGC 5236 ACIS-S NONE 10.00
14:03:12.50 +54:20:55.00 NGC 5457 ACIS-S NONE 10.00
23:34:27.40 -36:06:05.00 IC 5332 ACIS-S NONE 56.00
23:34:27.40 -36:06:05.00 IC 5332 ACIS-S NONE 56.00
Proposal Title: DETERMINING THE NATURE OF THE VARIABLE ABSORPTION IN NGC 3783 WITH CHANDRA/HST
PI: IAN GEORGE
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: We propose 5 Chandra/HETG observations of NGC 3783, each simultaneous with HST/STIS observations already approved. The observations will allow the accurate determination of the variable continuum, absorption & emission line properties known to exist in this Seyfert, and constitute the most comprehensive study possible of the nature, origin and evolution of the X-ray & UV absorbers in an AGN. Such absorbers constitute a major component of the circumnuclear gas in AGN, and only the HETG has the resolution to make these measurements. It is vital to perform such a detailed study early in the mission to facilitate the correct interpretation of the Chandra & XMM observations of this and other AGN. We also ask the TAC to approve a restructuring of Chandra time already awarded to this study.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
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11:39:02.40 -37:44:24.00 NGC 3783 ACIS-S HETG 170.00
11:39:02.40 -37:44:24.00 NGC 3783 ACIS-S HETG 170.00
11:39:02.40 -37:44:24.00 NGC 3783 ACIS-S HETG 170.00
11:39:02.40 -37:44:24.00 NGC 3783 ACIS-S HETG 170.00
11:39:02.40 -37:44:24.00 NGC 3783 ACIS-S HETG 170.00
Proposal Title: FINDING THE BARYONS IN THE LOW REDSHIFT UNIVERSE.
PI: SMITA MATHUR
Subject Category: ACTIVE GALAXIES AND QUASARS
Abstract: Recent estimates of the primordial deuterium abundance, combined with the theory of big bang nucleosynthesis (BBN), imply a baryon density parameter Omega_b ~ 0.04/(h_70^2). The main reservoir of low redshift baryons is still "missing." All the observed stellar and gaseous components add up to only Omega_b ~ 0.004/h_70, a factor of ten below the BBN abundance. Hydrodynamic cosmological simulations predict that a large fraction of the low redshift baryons should reside in a hot diffuse intergalactic medium (IGM). We propose to exploit the excellent spectral resolution of Chandra gratings to probe the low redshift IGM with sensitive X-ray spectroscopy. We expect to detect the main reservoir of low redshift baryons with observations of OVII absorption lines.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
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18:21:57.30 +64:20:36.40 H1821+643 ACIS-S LETG 166.00
18:21:57.30 +64:20:36.40 H1821+643 ACIS-S LETG 167.00
18:21:57.30 +64:20:36.40 H1821+643 ACIS-S LETG 167.00
Proposal Title: A COMPLETE X-RAY CLUSTER SAMPLE AT Z > 0.8
PI: SPENCER STANFORD
Subject Category: CLUSTERS OF GALAXIES
Abstract: We propose to observe three X-ray selected clusters of galaxies from the RDCS, one at z = 1.1 and two at z ~ 0.8. In conjunction with other data already being obtained by Chandra and XMM, we would then have luminosity and temperature measurements for a complete sample of 8 clusters at z > 0.8. We will produce the first temperature function at these high redshifts. Using Chandra's high angular resolution, we can minimize the contamination from point sources, a serious problem at faint flux limits, as well as study the spatial properties of the intra-cluster medium. With this combination of temperatures, luminosities, and spatial profiles, we will both probe the cluster mass function of the universe at high redshift and study the thermal history of the intra-cluster medium.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
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09:10:43.80 +54:22:04.00 RX J0910+5422 ACIS-I NONE 190.00
13:17:21.40 +29:11:25.00 RX J1317.4+2911 ACIS-I NONE 115.00
13:50:46.10 +60:07:09.00 RX J1350.0+6007 ACIS-I NONE 60.00
Proposal Title: CHANDRA SURVEY OF THE GALACTIC RIDGE AROUND THE MILKY WAY CENTER
PI: Q. DANIEL WANG
Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: We propose an X-ray survey of a 2.4x0.7 square deg field around the Galactic center, using a set of Chandra ACIS pointings. With the unprecedented spatial and spectral resolutions as well as the broad energy coverage, this survey will provide an invaluable database for studying X-ray pulsars, binaries, supernova remnants, and superbubbles as well as many unique features observed in the field. The resultant exquisite X-ray images, complemented by an existing large-scale ROSAT PSPC mapping in soft X-ray, will allow for direct comparison with similar maps in radio and infrared. In particular, the survey will provide an excellent opportunity to determine the origin of the well-known Galactic ridge X-ray emission.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
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17:42:15.30 -29:43:30.00 GCS 20 ACIS-I NONE 12.00
17:42:46.00 -29:32:43.00 GCS 21 ACIS-I NONE 12.00
17:43:05.00 -29:50:10.00 GCS 1 ACIS-I NONE 12.00
17:43:16.60 -29:21:56.00 GCS 22 ACIS-I NONE 12.00
17:43:35.60 -29:39:23.30 GCS 2 ACIS-I NONE 12.00
17:43:47.10 -29:11:09.00 GCS 23 ACIS-I NONE 12.00
17:43:54.70 -29:56:49.00 GCS 10 ACIS-I NONE 12.00
17:44:06.20 -29:28:35.80 GCS 3 ACIS-I NONE 12.00
17:44:17.50 -29:00:21.00 GCS 24 ACIS-I NONE 12.00
17:44:25.30 -29:46:01.00 GCS 11 ACIS-I NONE 12.00
17:44:36.60 -29:17:47.00 GCS 4 ACIS-I NONE 12.00
17:44:47.80 -28:49:33.00 GCS 25 ACIS-I NONE 12.00
17:44:55.80 -29:35:13.00 GCS 12 ACIS-I NONE 12.00
17:45:07.00 -29:06:59.00 GCS 5 ACIS-I NONE 12.00
17:45:18.00 -28:38:45.00 GCS 26 ACIS-I NONE 12.00
17:45:26.20 -29:24:24.00 GCS 13 ACIS-I NONE 12.00
17:45:48.10 -28:27:55.00 GCS 27 ACIS-I NONE 12.00
17:45:56.50 -29:13:35.00 GCS 14 ACIS-I NONE 12.00
17:46:07.30 -28:45:21.00 GCS 6 ACIS-I NONE 12.00
17:46:18.10 -28:17:06.00 GCS 28 ACIS-I NONE 12.00
17:46:26.70 -29:02:45.00 GCS 15 ACIS-I NONE 12.00
17:46:37.40 -28:34:31.00 GCS 7 ACIS-I NONE 12.00
17:46:47.90 -28:06:16.00 GCS 29 ACIS-I NONE 12.00
17:47:17.70 -27:55:26.00 GCS 30 ACIS-I NONE 12.00
17:47:26.70 -28:41:05.00 GCS 16 ACIS-I NONE 12.00
17:47:37.10 -28:12:50.00 GCS 8 ACIS-I NONE 12.00
17:47:56.60 -28:30:14.00 GCS 17 ACIS-I NONE 12.00
17:48:06.80 -28:01:59.00 GCS 9 ACIS-I NONE 12.00
17:48:26.40 -28:19:23.00 GCS 18 ACIS-I NONE 12.00
17:48:56.10 -28:08:31.00 GCS 19 ACIS-I NONE 12.00
Proposal Title: THE CHANDRA DEEP SURVEY OF THE HUBBLE DEEP FIELD NORTH (HDF-N) AREA
PI: WILLIAM BRANDT
Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: We propose to extend the Chandra X-ray survey of the HDF-N and its vicinity with a 475 ks exposure; this will give 1 Ms of total coverage on this field and will fulfill one of Chandra's central design goals. We should remain photon limited to 1 Ms and will probe the X-ray Universe more than four times deeper than any observation to date. We should resolve essentially all of the X-ray background from 0.5-8 keV and will study obscured and high-redshift active galaxies, advection dominated sources, starbursts, X-ray binaries, clusters and groups, and diffuse X-ray emission. The HDF-N field is an ideal one for multiwavelength follow-up studies due to the enormous database already in place. All data are to be placed in the public archive immediately and we will request no GO science funding.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
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12:36:49.40 +62:12:58.00 HDF-N ACIS-I NONE 158.33
12:36:49.40 +62:12:58.00 HDF-N ACIS-I NONE 158.33
12:36:49.40 +62:12:58.00 HDF-N ACIS-I NONE 158.33
Proposal Title: AN ULTRADEEP SURVEY IN THE CHANDRA DEEP FIELD SOUTH
PI: RICCARDO GIACCONI
Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS
Abstract: We propose to exploit the unique combination of angular resolution, sensitivity and field-of-view of the Chandra ACIS imager to perform the deepest X-ray survey ever in the well-studied "Chandra Deep Field South" (CDFS). With a total integration time of 1.5 Msec (request for this AO: 1 Msec) we reach a 0.5-2 keV flux limit of 2E-17 cgs. We aim to detect >500 sources, i.e. AGN to z=10, clusters to z=3 and starburst galaxies to z~1. Simulations based on the existing 130 ksec observation in the CDFS and realistic source counts and correlation function models show, that Chandra exposures will not be background or confusion limited up to 3Msec. We propose to make the Chandra data public immediately.
Grat- Exp.
R.A. Dec. (J2000) Target Name Det. ing Time
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03:32:27.50 -27:48:23.00 CDFS ACIS-I NONE 31.00
03:32:27.50 -27:48:23.00 CDFS ACIS-I NONE 69.00
03:32:27.50 -27:48:23.00 CDFS ACIS-I NONE 132.00
03:32:27.50 -27:48:23.00 CDFS ACIS-I NONE 132.00
03:32:27.50 -27:48:23.00 CDFS ACIS-I NONE 136.00
 |
The Chandra X-Ray
Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA. Email: cxcweb@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2004. All rights reserved. |
Last modified: 05/02/03