# Chandra Large, Very Large and X-ray Visionary Projects

 ACTIVE GALAXIES AND QUASARS BH AND NS BINARIES CLUSTERS OF GALAXIES EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS GALACTIC DIFFUSE EMISSION AND SURVEYS NORMAL GALAXIES SN, SNR AND ISOLATED NS STARS AND WD WD BINARIES AND CV

### Jump-to Cycle:

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## Cycle 16

Proposal Number Subject Category PI Name Type Time (ks) Title
16200111 STARS AND WD Naze LP 350 HD191612 - constraining the structure of a massive magnetosphere
16200863 STARS AND WD Drake LP 500 The Chandra-Kepler Flare Survey
16500705 SN, SNR AND ISOLATED NS Borkowski LP 400 Nonuniform expansion and brightening of the youngest Galactic SNR G1.9+0.3
16620755 NORMAL GALAXIES: X-RAY POPULATIONS Williams LP 350 A Chandra Legacy Survey of the Disk of M31
16700470 ACTIVE GALAXIES AND QUASARS King LP 700 Uncovering the True Nature of Warm-Absorbing Winds: The Power of the Fe XXII Doublet
16700515 ACTIVE GALAXIES AND QUASARS Lee LP 450 An X-ray, UV, and radio probe of the PG 1211+143 inflow-outflow dynamics
16700859 ACTIVE GALAXIES AND QUASARS Wise XVP 2000 The Rise to Power: Half a Billion Years of Intense AGN Activity in the Merging Cluster Cygnus A
16800528 CLUSTERS OF GALAXIES David LP 340 The Highly Perturbed X-ray Bright Group NGC 5044
16800622 CLUSTERS OF GALAXIES Forman LP 370 Probing the Physics of the ICM in the Dynamically Young Cluster A1367
16800690 CLUSTERS OF GALAXIES McDonald LP 588 A MASS-LIMITED SURVEY OF GALAXY CLUSTERS AT 1.2 < z < 1.7: PROBING THE PHYSICS OF THE ICM DURING ITS ASSEMBLY
16800829 CLUSTERS OF GALAXIES Vikhlinin XVP 2100 Chandra mapping of the cosmic web converging on the virialization region of Abell 1795
16900937 EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS Hasinger XVP 1250 Black Hole Fingerprints from Cosmic Dawn to Cosmic Noon

## Cycle 15

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
15200565STARS AND WDBrickhouseLP600Accretion-Driven Physics on the Young Star BP Tauri
15400412BH AND NS BINARIESCackettLP300A Definitive Test of Relativistic Disk Lines in Neutron Stars
15620853NORMAL GALAXIES: X-RAY POPULATIONSHaggardLP420Monitoring the Tidal Disruption of the Gas Cloud G2 As It Encounters Sgr A*
15700397ACTIVE GALAXIES AND QUASARSTombesiLP500Unifying X-ray winds in radio galaxies with Chandra HETG
15800474CLUSTERS OF GALAXIESSandersLP500Deep imaging and spectroscopy of the Centaurus cluster: metals and filaments
15800657CLUSTERS OF GALAXIESHughesLP237Chandra Observations of a Complete Sample of SZE Clusters from ACT
15800706CLUSTERS OF GALAXIESKraftLP500Hydrodynamics of merging and stripping in the Fornax Cluster: A Deep Chandra observation of NGC 1404
15800858CLUSTERS OF GALAXIESJonesLP520Clusters, Galaxies, and AGN in HST Frontier Fields
15900132EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSBrandtXVP3000The Chandra Deep Field-South: A Peerless Ultradeep Survey for Exploring the Distant X-ray Universe
15900142EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSTownsleyXVP2000The Tarantula -- Revealed by X-rays (T-ReX): A Definitive Chandra Investigation of 30 Doradus

## Cycle 14

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
14200176STARS AND WDHuenemoerderLP450Wolf-Rayet Winds at High Spectral Resolution
14200631STARS AND WDCorcoranLP500Occultation Measurements of the Embedded Wind Shock Distribution in the Nearest Eclipsing O-star Binary
14200801STARS AND WDKastnerLP670COMPACT AND DIFFUSE X-RAY SOURCES IN THE YOUNGEST PLANETARY NEBULAE
14400870BH AND NS BINARIESZezasXVP1100The Small Magellanic Cloud - A Case Study of X-ray Populations at Low Metallicity
14500153SN, SNR AND ISOLATED NSRomaniXVP1300A Legacy Study of the Relativistic Shocks of PWNe
14500702SN, SNR AND ISOLATED NSSlaneLP375A Detailed Study of the Composite Supernova Remnant MSH 11-62
14500725SN, SNR AND ISOLATED NSReynoldsLP400G11.2-0.3: Core-Collapse Supernova Progenitors, Cosmic Rays, and Pulsar-Wind Nebulae
14500928SN, SNR AND ISOLATED NSKargaltsevLP500A comparative study of two outstanding pulsar tails
14700473ACTIVE GALAXIES AND QUASARSKochanekLP810ENERGY DEPENDENT X-RAY MICROLENSING AND THE STRUCTURE OF QUASARS
14700824ACTIVE GALAXIES AND QUASARSHaggardLP300Joint Chandra/XMM/EVLA Monitoring of the Gas Cloud G2 as it Encounters Sgr A*
14700854ACTIVE GALAXIES AND QUASARSSandersLP435C-GOALS: The Chandra-RBGS Survey of a Complete Sample of Major-Merger LIRGs
14800360CLUSTERS OF GALAXIESTozziLP380Extreme constraints on ICM physics and cosmology: a deep observation of XMMUJ0044, the most distant massive cluster
14800365CLUSTERS OF GALAXIESJonesXVP988A Chandra-Planck Legacy Program for Massive Clusters of Galaxies
14800434CLUSTERS OF GALAXIESRandallLP350A Detailed Study of the Longest Known Ram Pressure Stripped Tail with Deep Chandra Observations of M86
14800815CLUSTERS OF GALAXIESWernerLP500Resolving the nearest cold front in the sky: the cleanest experimental tool to study detailed ICM physics
14900904EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSCivanoXVP2800The COSMOS Legacy Survey

## Cycle 13

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
13200221STARS AND WDMicelaLP300Simultaneous Chandra - CoRoT - Spitzer Observation of the Star Forming Region NGC 2264
13200314STARS AND WDLeuteneggerLP300A systematic measurement of the mass-loss rate of Zeta Ori
13200852STARS AND WDAguerosLP450Deep Imaging of M37, A Better Hyades
13500124SN, SNR AND ISOLATED NSWinklerLP690SN1006: SHOCK PHYSICS, COSMIC-RAY ACCELERATION, AND SN IA EXPLOSIONS
13500316SN, SNR AND ISOLATED NSSlaneLP350Bowing to Pressure During the Reformation: A Study of the Composite SNR G327.1-1.1
13610752NORMAL GALAXIES: DIFFUSE EMISSIONKuntzLP750M51: Using the Kinematics of a Grand-Design Spiral to Understand the Physics of the Hot ISM, SNRs, and XRBs
13610808NORMAL GALAXIES: DIFFUSE EMISSIONIrwinXVP1000A Chandra Legacy Project to Resolve the Accretion Flow of Gas Captured by a Supermassive Black Hole
13620807NORMAL GALAXIES: X-RAY POPULATIONSBaganoffXVP3000Chandra HETG Ultra-deep Gratings Spectroscopy of Sgr A* (CHUGSS)
13700587ACTIVE GALAXIES AND QUASARSVeilleuxLP400Quasar Feedback in Action: The Wide-Angle Wind of Mrk 231
13700784ACTIVE GALAXIES AND QUASARSEvansLP350A DIRECT TEST OF AGN FEEDBACK IN LATE-TYPE GALAXIES: SPATIALLY RESOLVED HETG SPECTROSCOPY OF NGC 3393
13800359CLUSTERS OF GALAXIESSandersLP500Examining incredible structure in the core of the Coma cluster
13800509CLUSTERS OF GALAXIESVikhlininXVP2000CHANDRA EXPLORATION OF THE COSMIC MELTING POT IN THE VIRIALIZATION REGION OF A RICH GALAXY CLUSTER
13800581CLUSTERS OF GALAXIESFormanLP310Abell 115: It Takes Two to Tango - The interaction of Relativistic and Thermal Plasma in a Merging Subcluster
13800764CLUSTERS OF GALAXIESHughesLP300Chandra Observations of the Brightest Sunyaev-Zeldovich Effect Cluster
13800883CLUSTERS OF GALAXIESBensonXVP2070.68Cosmology and Cluster Evolution from the 80 Most Massive Clusters in 2000 deg^2 from the South Pole Telescope Survey

## Cycle 12

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
12200128STARS AND WDTownsleyLP460A Long Look at NGC 3603, the Milky Way's Starburst Cluster
12200492STARS AND WDKashyapLP240SPINNING CORONA OF FK COM
12200640STARS AND WDKastnerLP570X-rays from Planetary Nebulae: Unveiling Binarity, Magnetic Fields, and Wind Collisions
12300901WD BINARIES AND CVSOKOLOSKILP250X-RAY IMAGING OF NOVA SHELLS
12400926BH AND NS BINARIESTomsickLP540Census of the Normal Spiral Arm Region
12500138SN, SNR AND ISOLATED NSRomaniLP160A Survey of PWNe around Narrow-Pulse Gamma-ray Pulsars
12500822SN, SNR AND ISOLATED NSBorkowskiVLP1000Radioactivity, Particle Acceleration, and Supernova Ejecta in the Youngest Galactic SNR G1.9+0.3
12610312NORMAL GALAXIES: DIFFUSE EMISSIONRandallLP500Understanding AGN Feedback with Deep Observations of NGC 5813
12620596NORMAL GALAXIES: X-RAY POPULATIONSLongLP750REMNANTS, BINARIES, AND DIFFUSE EMISSION IN THE NEARBY GRAND DESIGN SPIRAL M83
12700679ACTIVE GALAXIES AND QUASARSReevesLP400A Definitive Observation of an Accretion Disk Wind in the Quasar MR 2251-178
12700932ACTIVE GALAXIES AND QUASARSEvansLP300THE FIRST SPATIALLY RESOLVED SPECTRUM OF AN AGN OUTFLOW IN AN EARLY-TYPE GALAXY: A DEEP HETG OBSERVATION OF MRK 3
12800339CLUSTERS OF GALAXIESRussellLP400Revealing the ICM transport processes with the bow shock, upstream shock and turbulent wake in Abell 2146
12800433CLUSTERS OF GALAXIESKraftLP300A Deep {\em Chandra} Study of NGC 4472 - Gas Dynamics in the Nearest Group-Cluster Merger
12800632CLUSTERS OF GALAXIESHughesLP477Chandra Observations of the ACT Sample of SZE-Selected Galaxy Clusters
12900343EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSNicastroLP500Securing a Detection of the Bulk of the Missing Baryons
12900635EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSWangLP335A CHandra survey of Extended Emission-line Regions in nearby Seyfert galaxies (CHEERS)
12910240GALACTIC DIFFUSE EMISSION AND SURVEYSStockeLP300Detecting the Hot Wind Escaping from the Galactic Center of the Milky Way

## Cycle 11

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
11200169STARS AND WDOskinovaLP300Cosmic archaeology with Chandra: from a supergiant shell to young stellar objects in NGC 602
11200420STARS AND WDGuedelLP360New Thrust for Jets: Understanding the Physics of Young Stellar Jets and Outflows
11200698STARS AND WDDrakeVLP1080The Chandra Cygnus OB2 Survey
11500272SN, SNR AND ISOLATED NSParkLP450A Detailed Study of the Aged O-Rich Supernova Remnant 0049-73.6
11500276SN, SNR AND ISOLATED NSParkLP640A Detailed Study of the Type Ia Supernova Remnant G299.2-2.9
11620601NORMAL GALAXIES: X-RAY POPULATIONSPrestwichLP192.127Ultra-Luminous x-Ray Sources in the Most Metal-Poor Galaxies
11620915NORMAL GALAXIES: X-RAY POPULATIONSGalloLP479.2Accretion onto nuclear black holes in early type galaxies: comparing field vs. clusters
11700501ACTIVE GALAXIES AND QUASARSKochanekLP584The Size of Quasar Non-Thermal/X-ray Emission Regions
11700510ACTIVE GALAXIES AND QUASARSCrostonLP400The environmental and epoch dependence of radio-loud AGN feedback
11700858ACTIVE GALAXIES AND QUASARSSiemiginowskaLP300Jet-ISM Interactions in a Restarting Radio Galaxy 4C 29.30
11800102CLUSTERS OF GALAXIESFabianLP500Extending the Deep Image of the Perseus Cluster: The Outer Bubbles, Filaments and Ripples
11800471CLUSTERS OF GALAXIESMohrLP342.1Chandra Observations of a Complete Sample of SZE Selected Galaxy Clusters
11900514EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSGultekinLP360COMBH: Chandra Observations of M-sigma Black Holes

## Cycle 10

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
10200509STARS AND WDZHEKOVLP300Testing the Colliding Wind Paradigm: X-rays from the Wolf-Rayet Binary System WR 147
10400827BH AND NS BINARIESHomanLP323The cooling neutron star in the super-Eddington accretor XTE J1701-462
10500327SN, SNR AND ISOLATED NSReynoldsLP250An Extensive Study of the Youngest Galactic Supernova Remnant G1.9+0.3
10500437SN, SNR AND ISOLATED NSChakrabartyLP366The Spin and Magnetic Moment of the Neutron Star in Cassiopeia A
10500687SN, SNR AND ISOLATED NSHughesLP750A Deep Cycle 10 Chandra Observation of the Tycho Supernova Remnant
10500817SN, SNR AND ISOLATED NSPavlovLP440The Unique Dynamical Vela Pulsar Wind Nebula
10500824SN, SNR AND ISOLATED NSBauerLP500A Deep HETG Probe of the CSM Interaction in SN1996cr
10610785NORMAL GALAXIES: DIFFUSE EMISSIONStricklandLP480Wide, deep and sharp: A comprehensive observation of M82, the exemplar of starburst activity
10700504ACTIVE GALAXIES AND QUASARSBirkinshawLP420The multi-faceted X-ray activity of low-redshift active galaxies
10700584ACTIVE GALAXIES AND QUASARSTurnerLP320Deconstructing AGN X-ray Spectra - Time for a Paradigm Shift?
10800641CLUSTERS OF GALAXIESMcNamaraLP500A Deep Image of the Most Powerful Cluster AGN Outburst
10800762CLUSTERS OF GALAXIESStanfordLP309The Role of AGN in Massive Galaxy Formation
10800779CLUSTERS OF GALAXIESBlantonLP500Shocks, Ripples, and Bubbles: A Very Deep Observation of Abell 2052
10900836EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSFangLP500A Benchmark Observation of the Warm-Hot Intergalactic Medium

## Cycle 9

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
09300101WD BINARIES AND CVPooleyLP305.4A Chandra Legacy Survey of Dynamically Active Globular Clusters
09500471SN, SNR AND ISOLATED NSSlaneLP300A Deep Chandra Observation of G54.1+0.3
09620513NORMAL GALAXIES: X-RAY POPULATIONSJenkinsLP747.6Galaxies across the Octaves: A Chandra Legacy Survey of SINGS Galaxies
09800310CLUSTERS OF GALAXIESAllenLP465Probing Dark Energy with Relaxed Galaxy Clusters
09800847CLUSTERS OF GALAXIESMarkevitchLP460BOW SHOCK, ELECTRON-ION EQUILIBRIUM, BREAKUP OF COOL CORE, AND DARK SUBCLUSTER IN ABELL 520
09900660EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSNandraVLP1800The Evolution of Faint AGN at High Redshift
09910161GALACTIC DIFFUSE EMISSION AND SURVEYSTownsleyVLP1080The Great Nebula in Carina: Protoplanetary Disks to Starburst Galaxies
09910246GALACTIC DIFFUSE EMISSION AND SURVEYSRevnivtsevLP900THE ORIGIN OF THE GALACTIC RIDGE X-RAY EMISSION

## Cycle 8

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
08200704STARS AND WDBrickhouseLP500Accretion or a Corona? Definitive Observations of the Young Accreting Star TW Hydrae
08300134WD BINARIES AND CVHoogerwerfLP500Testing the Physics of Magnetic Accretion: EX Hydrae from the Shock to the White Dwarf Surface
08500520SN, SNR AND ISOLATED NSMcCrayLP300SPATIALLY RESOLVED LETG SPECTROMETRY OF SNR1987A
08500758SN, SNR AND ISOLATED NSHughesLP150A Deep Chandra Observation of the Tycho Supernova Remnant
08620985NORMAL GALAXIES: X-RAY POPULATIONSChuLP300Massive Star Formation and Energy Feedback in the Starburst Region N11
08700512ACTIVE GALAXIES AND QUASARSKraftVLP600Jets, Bubbles, Binaries, and Hot Gas: A Deep Observation of Centaurus A
08700551ACTIVE GALAXIES AND QUASARSSandersLP390The Chandra-RBGS Survey of a Complete Sample of Luminous Infrared Galaxies
08700916ACTIVE GALAXIES AND QUASARSNowakLP320The Definitive Chandra Observations of NGC 4258
08800952CLUSTERS OF GALAXIESMulchaeyLP440A Complete Baryon Census in a Nearby Galaxy Group
08900073EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSElvisVLP1800THE CHANDRA-COSMOS SURVEY
08900745EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSAlexanderLP400The Chandra Deep Proto-cluster Field: Black-Hole Growth and Feedback in Dense Environments
08900784EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSTreuLP453.599999999999The Duty Cycle of Supermassive Black Holes: X-raying Virgo

## Cycle 7

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
07200124STARS AND WDMicelaLP450The Initial Mass Function in the Outer Galaxy: The star forming region NGC 1893
07200367STARS AND WDTownsleyLP300Winds, OB Populations, and Young Stars: New Science from M17
07400594BH AND NS BINARIESJonkerLP300The lowest-luminosity quiescent neutron star transient: implications for strong field gravity and the neutron star EoS
07400810BH AND NS BINARIESMillerLP300CHAZSS: The Chandra HETGS Atoll/Z Spectroscopic Survey
07500318SN, SNR AND ISOLATED NSParkLP530O-Rich SNR G292.0+1.8: A Textbook Example of a Galactic Core-Collapse SNR
07500764SN, SNR AND ISOLATED NSReynoldsLP750Kepler's Supernova Remnant: Circumstellar Interactions, Particle Acceleration, and Type Ia Supernova Origins
07610889NORMAL GALAXIES: DIFFUSE EMISSIONSasakiVLP1400The Chandra ACIS Survey of M33 (ChASeM33): A Deep Survey of the Nearest Face-on Spiral Galaxy
07620395NORMAL GALAXIES: X-RAY POPULATIONSFabbianoVLP770A Chandra legacy program: deep study of LMXB populations
07800432CLUSTERS OF GALAXIESBuoteLP401The Cosmological Formation of Galaxy Groups
07910613GALACTIC DIFFUSE EMISSION AND SURVEYSMunoVLP600A Legacy Study of Stellar Life Cycles at the Galactic Center

## Cycle 6

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
06100312SOLAR SYSTEMLisseLP291.6Comet 9P/Tempel 1 During the Deep Impact Encounter
06200204STARS AND WDWaldronVLP594A Chandra HETGS Survey of O-Stars
06200294STARS AND WDKastnerLP300The X-ray Spectrum of a Planetary Nebula at High Resolution
06500333SN, SNR AND ISOLATED NSSlaneLP190The Structure and Composition of Pulsar Winds and their Nebulae
06500496SN, SNR AND ISOLATED NSRutledgeVLP800Search for Sub-Millisecond Pulsars in 47 Tuc
06500950SN, SNR AND ISOLATED NSvan KerkwijkLP300Spectra of Neutron Stars with Strongly Magnetized Hydrogen Atmospheres
06800101CLUSTERS OF GALAXIESVikhlininLP615DARK ENERGY WITH X-RAY CLUSTERS: CHANDRA OBSERVATIONS OF 41 HIGH-REDSHIFT CLUSTERS FROM THE 400 deg^2 ROSAT PSPC SURVEY
06800102CLUSTERS OF GALAXIESVikhlininLP450A CHANDRA TREASURY OBSERVATION OF THE BEST EXAMPLE OF A CLUSTER COLD FRONT
06800613CLUSTERS OF GALAXIESFormanLP512The History of AGN Activity in M87 and the Interaction of Nuclear Outbursts with the Surrounding Atmosphere
06900444EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSNandraVLP1400Deep Chandra Imaging of the Extended Groth Strip: The Co-evolution of Black Holes and Galaxies
06910168GALACTIC DIFFUSE EMISSION AND SURVEYSTownsleyLP200Massive Star Life, Death, and Rebirth in the Perseus Arm

## Cycle 5

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
05400594BH AND NS BINARIESPaerelsLP300High Resolution Photospheric Spectroscopy of the Neutron Star in EXO0748-676
05500623SN, SNR AND ISOLATED NSHwangVLP1000The Cassiopeia A Explosion: Getting at the Core Issues
05500645SN, SNR AND ISOLATED NSMcCrayLP300Spatially resolved grating spectrometry of the newborn supernova remnant SNR1987A
05600587NORMAL GALAXIESKuntzVLP1000An Ultra-Deep Study of M101
05700535ACTIVE GALAXIES AND QUASARSLeeLP300A Chandra HETGS & HST view of the Warm and Lukewarm absorbers in IRAS 13349+2438
05800170CLUSTERS OF GALAXIESFabianLP800A Megasecond Image of the Core of the Perseus Cluster
05800890CLUSTERS OF GALAXIESMarkevitchLP500THE MOST INTERESTING CLUSTER IN THE UNIVERSE
05900218EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSBrandtVLP1000The Extended Chandra Deep Field-South Survey: A Public Chandra Legacy
05900547EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSWilkesLP630The Balance of Power between Starbursts and AGN: a Chandra/SIRTF Survey.

## Cycle 4

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
04200312NORMAL STARS AND WDCorcoranLP500UNVEILING ETA CAR: CHANDRA OBSERVATIONS DURING THE 2003.5 EVENT
04200331NORMAL STARS AND WDFeigelsonLP780AN ULTRADEEP CHANDRA STUDY OF THE ORION NEBULA (GUEST OBSERVER PORTION)
04500141SN, SNR AND ISOLATED NSSlaneLP350A DETAILED STUDY OF 3C58 - THE YOUNGEST KNOWN PULSAR NEBULA IN THE GALAXY
04500223SN, SNR AND ISOLATED NSHughesLP370STUDYING HIGH MACH NUMBER SHOCKS IN YOUNG SUPERNOVA REMNANTS WITH CHANDRA
04500278SN, SNR AND ISOLATED NSSewardLP225SUPERNOVA REMNANTS IN THE MAGELLANIC CLOUDS
04500813SN, SNR AND ISOLATED NSPavlovLP300FIRST MEASUREMENT OF THE GRAVITATIONAL REDSHIFT AT THE SURFACE OF A NEUTRON STAR
04700532ACTIVE GALAXIES AND QUASARSKaastraLP360CONNECTING THE X-RAY AND UV IONIZED ABSORBERS IN MRK 279
04800280CLUSTERS OF GALAXIESScharfLP500SURVEYING THE FORNAX CLUSTER OF GALAXIES
04800927CLUSTERS OF GALAXIESHughesLP140CHANDRA OBSERVATIONS OF DLS SHEAR-SELECTED CLUSTERS
04900340EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSJonesLP275A CHANDRA WIDE-FIELD SURVEY TO MAP THE COSMIC WEB AND INVESTIGATE THE EVOLUTION OF NUCLEAR ACCRETION
04901014EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSJonesLP25A CHANDRA WIDE-FIELD SURVEY TO MAP THE COSMIC WEB AND INVESTIGATE THE EVOLUTION OF NUCLEAR ACCRETION

## Cycle 3

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
03400837BH AND NS BINARIESGrindlayLP296COMPLETE COMPACT OBJECT AND BINARY SURVEY OF 47TUC
03500538SN, SNR AND ISOLATED NSKulkarniLP250A CHANDRA SURVEY FOR COMPACT OBJECTS IN SUPERNOVA REMNANTS
03600940NORMAL GALAXIESBaganoffLP518.5MONITORING THE EXTREME X-RAY FLARING OF SAGITTARIUS A* AND A DEEP SURVEY OF THE CENTRAL 40 PC OF THE GALAXY
03700413ACTIVE GALAXIES AND QUASARSFabbianoLP375AN IN-DEPTH STUDY OF THE X-RAY SOURCE POPULATION AND HOT ISM OF THE ANTENNAE GALAXIES
03700438ACTIVE GALAXIES AND QUASARSKaastraLP520RESOLVING THE WARM ABSORBER IN NGC 5548
03800272CLUSTERS OF GALAXIESEbelingLP527MACS: THE X-RAY PROPERTIES OF THE MOST MASSIVE GALAXY CLUSTERS AT Z>0.3
03900164EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSBrandtLP1000.5THE CHANDRA SURVEY OF THE HUBBLE DEEP FIELD NORTH AREA: A PUBLIC RESOURCE FOR THE PRESENT AND FUTURE OF X-RAY ASTRONOMY

## Cycle 2

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
02200644NORMAL STARS AND WDAyresLP380TORTURED CORONAE IN THE RAPID BRAKING ZONE
02500880SN, SNR AND ISOLATED NSHESTERLP200COORDINATED CHANDRA/HST OBSERVATIONS OF THE CRAB NEBULA
02600758NORMAL GALAXIESPrestwichLP547THE X-RAY POINT SOURCE POPULATION IN SPIRAL GALAXIES
02700294ACTIVE GALAXIES AND QUASARSGeorgeLP850DETERMINING THE NATURE OF THE VARIABLE ABSORPTION IN NGC 3783 WITH CHANDRA/HST
02700728ACTIVE GALAXIES AND QUASARSMathurLP500FINDING THE BARYONS IN THE LOW REDSHIFT UNIVERSE.
02800845CLUSTERS OF GALAXIESStanfordLP375A COMPLETE X-RAY CLUSTER SAMPLE AT Z > 0.8
02900196EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSBrandtLP495THE CHANDRA DEEP SURVEY OF THE HUBBLE DEEP FIELD NORTH (HDF-N) AREA
02910585GALACTIC DIFFUSE EMISSION AND SURVEYSWangLP360CHANDRA SURVEY OF THE GALACTIC RIDGE AROUND THE MILKY WAY CENTER

Subject Category: NORMAL STARS AND WD

Proposal Number: 02200644

Title: TORTURED CORONAE IN THE RAPID BRAKING ZONE

Type: LP Total Time: 380

PI Name: Thomas Ayres

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.

R.A. Dec. Target Name Det. Grating Exp.Time
23:49:40.80+36:25:31.00HD 223460ACIS-SHETG100
10:46:46.10-49:25:12.00HD 93497ACIS-SHETG80
12:51:41.80+27:32:26.00HD 111812ACIS-SHETG140

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 02500880

Title: COORDINATED CHANDRA/HST OBSERVATIONS OF THE CRAB NEBULA

Type: LP Total Time: 200

PI Name: JEFF HESTER

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.

R.A. Dec. Target Name Det. Grating Exp.Time
05:34:31.60+22:00:56.40CRAB NEBULAACIS-SNONE200

Subject Category: NORMAL GALAXIES

Proposal Number: 02600758

Title: THE X-RAY POINT SOURCE POPULATION IN SPIRAL GALAXIES

Type: LP Total Time: 547

PI Name: Andrea Prestwich

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.

R.A. Dec. Target Name Det. Grating Exp.Time
03:17:18.30-41:06:28.00NGC 1291ACIS-SNONE35
08:53:32.80+51:18:50.00NGC 2681ACIS-SNONE170
12:22:32.00+29:53:43.00NGC 4314ACIS-SNONE36
13:37:00.80-29:51:59.00NGC 5236ACIS-SNONE10
01:36:41.70+15:46:59.00NGC 628ACIS-SNONE94
14:03:12.50+54:20:55.00NGC 5457ACIS-SNONE10
23:34:27.40-36:06:05.00IC 5332ACIS-SNONE112
00:52:04.60+47:33:04.00NGC 278ACIS-SNONE80

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 02700294

Title: DETERMINING THE NATURE OF THE VARIABLE ABSORPTION IN NGC 3783 WITH CHANDRA/HST

Type: LP Total Time: 850

PI Name: Ian George

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.

R.A. Dec. Target Name Det. Grating Exp.Time
11:39:02.40-37:44:24.00NGC 3783ACIS-SHETG710

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 02700728

Title: FINDING THE BARYONS IN THE LOW REDSHIFT UNIVERSE.

Type: LP Total Time: 500

PI Name: Smita Mathur

Recent estimates of the primordial deuterium abundance, combined with the theory of big bang nucleosynthesis (BBN), imply a baryon density parameter $\Omega_b \approx 0.04 h_{70}^{-2}$. The main reservoir of low redshift baryons is still missing''. All the observed stellar and gaseous components add up to only $\Omega_b \approx 0.004h_{70}^{-1}$, 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.

R.A. Dec. Target Name Det. Grating Exp.Time
18:21:57.30+64:20:36.40H1821+643ACIS-SLETG500

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 02800845

Title: A COMPLETE X-RAY CLUSTER SAMPLE AT Z > 0.8

Type: LP Total Time: 375

PI Name: Spencer Stanford

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.

R.A. Dec. Target Name Det. Grating Exp.Time
09:10:43.80+54:22:04.00RX J0910+5422ACIS-INONE190
13:17:21.40+29:11:25.00RX J1317.4+2911ACIS-INONE115
13:50:46.10+60:07:09.00RX J1350.0+6007ACIS-INONE60

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 02900196

Title: THE CHANDRA DEEP SURVEY OF THE HUBBLE DEEP FIELD NORTH (HDF-N) AREA

Type: LP Total Time: 495

PI Name: William Brandt

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.

R.A. Dec. Target Name Det. Grating Exp.Time
12:36:49.40+62:12:58.00HDF-NACIS-INONE475

Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 02910585

Title: CHANDRA SURVEY OF THE GALACTIC RIDGE AROUND THE MILKY WAY CENTER

Type: LP Total Time: 360

PI Name: Q. Daniel Wang

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.

R.A. Dec. Target Name Det. Grating Exp.Time
17:43:05.00-29:50:10.00GCS 1ACIS-INONE12
17:44:06.20-29:28:35.80GCS 3ACIS-INONE12
17:44:36.60-29:17:47.00GCS 4ACIS-INONE12
17:45:07.00-29:06:59.00GCS 5ACIS-INONE12
17:46:07.30-28:45:21.00GCS 6ACIS-INONE12
17:46:37.40-28:34:31.00GCS 7ACIS-INONE12
17:47:37.10-28:12:50.00GCS 8ACIS-INONE12
17:48:06.80-28:01:59.00GCS 9ACIS-INONE12
17:44:25.30-29:46:01.00GCS 11ACIS-INONE12
17:44:55.80-29:35:13.00GCS 12ACIS-INONE12
17:45:26.20-29:24:24.00GCS 13ACIS-INONE12
17:45:56.50-29:13:35.00GCS 14ACIS-INONE12
17:46:26.70-29:02:45.00GCS 15ACIS-INONE12
17:47:26.70-28:41:05.00GCS 16ACIS-INONE12
17:47:56.60-28:30:14.00GCS 17ACIS-INONE12
17:48:26.40-28:19:23.00GCS 18ACIS-INONE12
17:48:56.10-28:08:31.00GCS 19ACIS-INONE12
17:42:15.30-29:43:30.00GCS 20ACIS-INONE12
17:42:46.00-29:32:43.00GCS 21ACIS-INONE12
17:43:16.60-29:21:56.00GCS 22ACIS-INONE12
17:44:17.50-29:00:21.00GCS 24ACIS-INONE12
17:44:47.80-28:49:33.00GCS 25ACIS-INONE12
17:45:18.00-28:38:45.00GCS 26ACIS-INONE12
17:45:48.10-28:27:55.00GCS 27ACIS-INONE12
17:46:18.10-28:17:06.00GCS 28ACIS-INONE12
17:46:47.90-28:06:16.00GCS 29ACIS-INONE12
17:47:17.70-27:55:26.00GCS 30ACIS-INONE12
17:43:35.60-29:39:23.30GCS 2ACIS-INONE12
17:43:54.70-29:56:49.00GCS 10ACIS-INONE12
17:43:47.10-29:11:09.00GCS 23ACIS-INONE12

Subject Category: BH AND NS BINARIES

Proposal Number: 03400837

Title: COMPLETE COMPACT OBJECT AND BINARY SURVEY OF 47TUC

Type: LP Total Time: 296

PI Name: Johnathan Grindlay

Our cycle 1 observation of 47Tuc has shown its promise as the ultimate laboratory for study of the production and evolution of compact binaries and compact objects in globular clusters. We propose a deep (4 x 75ksec) ACIS-S observation to measure the complete populations of millisecond pulsars (MSPs) and cataclysmic variables (CVs) by their variability and spectra and to constrain the main sequence binary population. Coordinated HST (ACS) data would provide unique identifications of CVs and many MSPs and allow the full population of quiescent low mass x-ray binaries to be distinguished from CVs. This dataset would provide fundamental constraints for the origins of neutron stars, millisecond pulsars, magnetic white dwarfs and compact binaries in globular clusters.

R.A. Dec. Target Name Det. Grating Exp.Time
00:24:05.80-72:04:51.2047 TUCANAEACIS-SNONE300

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 03500538

Title: A CHANDRA SURVEY FOR COMPACT OBJECTS IN SUPERNOVA REMNANTS

Type: LP Total Time: 250

PI Name: Shrinivas Kulkarni

It has become increasingly clear that the natal properties of young neutron stars exhibit a rich diversity --- dramatically illustrated by the enigmatic central object in Cas A and hinted at by early 3D modeling of core-collapse. We propose a survey of an objectively constructed sample of nearby SNRs which, when combined with archival data and our vigorous multi-wavelength observation program, will give us a reliable view of the true variety of neutron stars. The ensuing statistics and studies of the central objects will advance our understanding of core-collapse and have bearing on related topics (supernova energetics, natal kicks, etc). We believe that this comprehensive effort, a census of such objects within 5 kpc, will be one of the enduring legacies of the Chandra mission.

R.A. Dec. Target Name Det. Grating Exp.Time
01:28:32.00+63:06:34.00G127.1+0.5ACIS-INONE20
14:42:50.00-62:28:20.00G315.4-2.3ACIS-INONE10
19:38:24.00+17:17:32.00G053.6-2.2ACIS-INONE35
23:59:17.00+62:26:53.00G116.9+0.2ACIS-INONE50
19:33:20.00+18:58:44.00G054.4-0.3ACIS-INONE25
20:52:14.00+55:20:30.00G093.3+6.9ACIS-INONE15
13:50:30.00-62:06:13.00G309.8+0.0ACIS-INONE40
20:53:22.00+42:27:18.00G084.2-0.8ACIS-INONE25
05:26:49.00+42:57:19.00G166.0+4.2ACIS-INONE30

Subject Category: NORMAL GALAXIES

Proposal Number: 03600940

Title: MONITORING THE EXTREME X-RAY FLARING OF SAGITTARIUS A* AND A DEEP SURVEY OF THE CENTRAL 40 PC OF THE GALAXY

Type: LP Total Time: 518.5

PI Name: Frederick Baganoff

In Cycle 1, we discovered the first clear evidence of X-ray emission from Sgr A*, the compact radio source associated with the massive black hole (MBH) at the dynamical center of the Milky Way. In Cycle 2, we made the first detection of rapid, large-amplitude X-ray variability of Sgr A*. To gather unprecedented information about the immediate environment of an MBH, we propose a 510-ks ACIS-I observation of Sgr A* to measure the quiescent-state emission spectrum and to characterize the timescales, duty cycle, energetics, and spectral evolution of the flares. Simultaneous monitoring with OVRO and VLBA are being proposed to search for correlated variations and lags predicted by theory to characterize the flaring state emission process. We will also obtain a deep survey in this rich field.

R.A. Dec. Target Name Det. Grating Exp.Time
17:45:40.00-29:00:28.00SGR A*ACIS-INONE510

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 03700413

Title: AN IN-DEPTH STUDY OF THE X-RAY SOURCE POPULATION AND HOT ISM OF THE ANTENNAE GALAXIES

Type: LP Total Time: 375

PI Name: Giuseppina Fabbiano

We propose a deep 375~ks observation of the prototypical merger galaxies NGC~4038/39 (The Antennae''), divided into 5 time segments. Together with the archival data, we will obtain a deep 450ks ACIS-S exposure and time monitoring over 3 yrs. The unique significance of the Antennae for our understanding of mergers and the extraordinary characteristics of the X-ray emission of this system, make this study essential for probing a wide range of fundamental questions on the properties and evolution of XRBs, the range of black hole masses implied by the rich ULX population, the properties of the multiphase ISM, and the evolution of galaxy mergers, that cannot be addressed by looking at more normal galaxies.

R.A. Dec. Target Name Det. Grating Exp.Time
12:01:53.70-18:52:35.50NGC 4038/NGC 4039ACIS-SNONE375

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 03700438

Title: RESOLVING THE WARM ABSORBER IN NGC 5548

Type: LP Total Time: 520

PI Name: Jelle Kaastra

We propose to map the ionization and velocity structure of the X-ray and UV absorbers in NGC 5548 with the LETGS and HETGS of Chandra and STIS/HST. NGC 5548 is an important target for this kind of study because 1) it shows multiple kinematic components in the UV characterized by a range in ionization parameter and effective column, 2) it shows evidence for multiple kinematic and ionization components in previous Chandra X-ray spectra, and 3) it has a low Galactic column, which permits coverage of spectral lines out to 80 Angstrom with the LETGS. These data yield the ionization parameter and column density of the absorption-line regions as a function of radial velocity, and constrain the elemental abundances and shape of the unobserved EUV continuum.

R.A. Dec. Target Name Det. Grating Exp.Time
14:17:59.60+25:08:12.40NGC 5548HRC-SLETG350
14:17:59.60+25:08:12.40NGC 5548ACIS-SHETG170

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 03800272

Title: MACS: THE X-RAY PROPERTIES OF THE MOST MASSIVE GALAXY CLUSTERS AT Z>0.3

Type: LP Total Time: 527

PI Name: Harald Ebeling

We propose ACIS-I and HST observations of 30 distant and very X-ray luminous clusters (z>0.3, Lx>1e45) detected in the MAssive Cluster Survey (MACS). 22 of these 30 are new discoveries. Our targets are the high-z counterparts of the best-studied local systems and, combined with 4 others scheduled for observation, form a statistical sample >10 times larger than any previous one in this redshift and luminosity range. Chandra's unique capabilities will allow us to obtain spatially resolved gas temperature and density maps to constrain both the cosmological and physical parameters governing the evolution of the most massive clusters at z<0.5. The proposed observations are complemented by extensive groundbased follow-up studies of weak gravitational lensing, galaxy dynamics and the SZ effect.

R.A. Dec. Target Name Det. Grating Exp.Time
04:17:33.70-11:54:12.00MACSJ0417.5-1154ACIS-INONE12
02:42:35.90-21:32:15.00MACSJ0242.5-2132ACIS-INONE12
19:31:50.10-26:34:36.50MACSJ1931.8-2634ACIS-INONE14
23:11:35.20+03:38:24.50MACSJ2311.5+0338ACIS-INONE14
00:47:20.90-08:10:30.50MACSJ0047.3-0810ACIS-INONE14
11:31:53.70-19:55:43.50MACSJ1131.8-1955ACIS-INONE15
09:49:53.80+17:08:03.00MACSJ0949.8+1708ACIS-INONE15
11:15:53.30+01:29:47.00MACSJ1115.8+0129ACIS-INONE16
22:45:05.20+26:37:58.00MACSJ2245.0+2637ACIS-INONE17
14:27:40.60-25:21:06.00MACSJ1427.6-2521ACIS-INONE17
22:11:44.60-03:49:47.00MACSJ2211.7-0349ACIS-INONE18
22:29:44.50-27:55:38.50MACSJ2229.7-2755ACIS-INONE17
01:52:35.50-28:52:47.00MACSJ0152.5-2852ACIS-INONE18
05:20:42.40-13:28:55.00MACSJ0520.7-1328ACIS-INONE20
01:59:49.90-08:49:49.00MACSJ0159.8-0849ACIS-INONE18
17:31:40.10+22:52:39.00MACSJ1731.6+2252ACIS-INONE21
13:19:59.60+70:03:34.50MACSJ1319.9+7003ACIS-INONE20
02:57:42.00-22:09:01.50MACSJ0257.6-2209ACIS-INONE20
04:04:38.50+11:09:21.00MACSJ0404.6+1109ACIS-INONE24
22:28:34.40+20:36:47.00MACSJ2228.5+2036ACIS-INONE21
17:20:15.50+35:36:22.00MACSJ1720.2+3536ACIS-INONE21
05:47:02.20-39:04:25.00MACSJ0547.0-3904ACIS-INONE22
03:08:55.40+26:45:39.00MACSJ0308.9+2645ACIS-INONE25
04:29:36.00-02:53:01.50MACSJ0429.6-0253ACIS-INONE24
00:35:26.80-20:15:37.50MACSJ0035.4-2015ACIS-INONE22
00:11:43.00-15:23:12.00MACSJ0011.7-1523ACIS-INONE22
20:49:55.90-32:17:10.50MACSJ2049.9-3217ACIS-INONE24
12:06:13.00-08:47:43.00MACSJ1206.2-0847ACIS-INONE24

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 03900164

Title: THE CHANDRA SURVEY OF THE HUBBLE DEEP FIELD NORTH AREA: A PUBLIC RESOURCE FOR THE PRESENT AND FUTURE OF X-RAY ASTRONOMY

Type: LP Total Time: 1000.5

PI Name: William Brandt

We propose to extend the Chandra deep survey of the HDF-N and its vicinity. The ultimate goal is to obtain 5 Ms of coverage over the next 5 years; currently we have 1 Ms coverage. Here we propose two public 500 ks observations. This project will fulfill one of Chandra's central design goals and will be a long-lasting legacy of Chandra, laying the groundwork for the next generation of X-ray observatories. We should remain nearly photon limited for point-sources near the aim point. We will study obscured and high-redshift AGN, starbursts, normal galaxies, clusters, groups, and diffuse X-ray emission. The HDF-N field is the ideal region for multiwavelength follow-up studies due to the enormous database already in place. Our ACIS team expertise will be extensively utilized.

R.A. Dec. Target Name Det. Grating Exp.Time
12:36:49.40+62:12:58.00HDF-NACIS-INONE1000

Subject Category: NORMAL STARS AND WD

Proposal Number: 04200312

Title: UNVEILING ETA CAR: CHANDRA OBSERVATIONS DURING THE 2003.5 EVENT

Type: LP Total Time: 500

PI Name: Michael Corcoran

Understanding the supermassive star Eta Car is important for a variety of topics: the formation and evolution of extremely massive stars and their influence on their environments. Eta Car has been a mystery since its giant eruption in the 1840s. A possible key to the puzzle is the identification of periodic changes in some near IR emission lines, and the discovery of repeatable X-ray eclipses. The next X-ray eclipse will occur during AO4, and we propose to use HETG to observe the variations in the spectral and spatial distribution of the emission during this event. In conjunction with scheduled HST/STIS, INTEGRAL, IR and optical spectroscopy, and radio observations, these HETG observation provide key information which may finally help us solve the riddle of this star.

R.A. Dec. Target Name Det. Grating Exp.Time
10:45:03.60-59:41:04.30ETA CARINAEACIS-SHETG100
10:45:03.60-59:41:04.30ETA CARINAEACIS-SHETG100
10:45:03.60-59:41:04.30ETA CARINAEACIS-SHETG100
10:45:03.60-59:41:04.30ETA CARINAEACIS-SHETG100
10:45:03.60-59:41:04.30ETA CARINAEACIS-SHETG100

Subject Category: NORMAL STARS AND WD

Proposal Number: 04200331

Title: AN ULTRADEEP CHANDRA STUDY OF THE ORION NEBULA (GUEST OBSERVER PORTION)

Type: LP Total Time: 780

PI Name: Eric Feigelson

We propose a 850 ks ACIS-I observation of the Orion Nebula spanning 11.5 contiguous days, with GTO Teams providing 150 ks of the time. The Orion Nebula is the best target in the sky for Chandra study of stellar magnetic activity and star formation with extensive multiwavelength support. Science goals include: addressing the mass- and age-dependence of magnetic activity in brown dwarfs; uncovering the low-mass members of the deeply embedded clusters; elucidating the absence of an activity-rotation relation in pre-main sequence stars; measuring flare frequencies, flare plasma conditions and coronal structures in dozens of active stars; investigate the nature of OB wind shocks; and studying X-ray effects on circumstellar environments.

R.A. Dec. Target Name Det. Grating Exp.Time
05:35:16.70-05:23:24.00ORION NEBULA CLUSTERACIS-INONE700

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 04500141

Title: A DETAILED STUDY OF 3C58 - THE YOUNGEST KNOWN PULSAR NEBULA IN THE GALAXY

Type: LP Total Time: 350

PI Name: Patrick Slane

3C58 is the youngest known Crab-like SNR in the Galaxy. Chandra observations have uncovered its young pulsar, provided an upper limit to its surface temperature which challenges standard models of NS cooling, and identified the termination shock of its wind. Structures in the nebula indicative of jets and particle outflows have also been revealed. 3C58 thus possesses all of the standard traits of a young pulsar system, and may be a more appropriate "prototype" than the Crab. Based on the foundation built from our initial studies, we propose a definitive X-ray study of 3C58 to study structure on scales of the telescope resolution, perform spectral mapping of the complex emission regions, and obtain a template for future studies of this remnant of SN 1181 at other wavelengths.

R.A. Dec. Target Name Det. Grating Exp.Time
02:05:37.00+64:49:48.003C58ACIS-SNONE350

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 04500223

Title: STUDYING HIGH MACH NUMBER SHOCKS IN YOUNG SUPERNOVA REMNANTS WITH CHANDRA

Type: LP Total Time: 370

PI Name: John Hughes

We propose deep imaging of the full extents of the young supernova remnants SN1006, Tycho, and G292.0+1.8. These images are optimized for proper motion measurements for which Chandra's superb angular resolution is uniquely suited and will yield significant results when compared to earlier Chandra, ROSAT, and Einstein images. The new X-ray data, in conjunction with our new radio observations, will address questions concerning the physics of ultra-high-Mach-number collisionless shocks, the efficiency of cosmic-ray acceleration, the dynamics of ejecta-dominated SNRs, and the small-scale structure of SN ejecta. These observations will serve as a legacy of the Chandra mission and will provide invaluable data for future research on SNRs and cosmic rays.

R.A. Dec. Target Name Det. Grating Exp.Time
15:02:55.00-41:55:30.00SN1006ACIS-INONE220
00:25:19.00+64:08:10.00TYCHO'S SNRACIS-INONE150

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 04500278

Title: SUPERNOVA REMNANTS IN THE MAGELLANIC CLOUDS

Type: LP Total Time: 225

PI Name: Frederick Seward

Chandra has now observed 20 of the brightest remnants in the Magellanic Clouds. Because the distances are known and the absorption low, this set is going to yield definitive data on remnant characteristics and evolution. We propose to observe 6 more remnants in the LMC. All are fainter and some are larger than those in the observed sample. We expect to see faint central sources and previously unobserved structure. These observations will span a region of parameter space not covered in the presently-observed sample aad will include some remnants with unique interesting features.

R.A. Dec. Target Name Det. Grating Exp.Time
05:40:00.00-69:44:15.000540-697ACIS-SNONE21
05:31:60.00-71:00:20.000532-710 [N206]ACIS-SNONE68
05:50:40.00-68:21:30.000550-683ACIS-SNONE68
04:54:33.00-67:12:48.000454-672 [N9]ACIS-SNONE68

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 04500813

Title: FIRST MEASUREMENT OF THE GRAVITATIONAL REDSHIFT AT THE SURFACE OF A NEUTRON STAR

Type: LP Total Time: 300

PI Name: George Pavlov

Chandra observations of 1E1207.4-5209, the neutron star (NS) in the PKS 1209-51/52 SNR, allowed us to discover absorption features in the NS thermal spectrum. This discovery provides a unique opportunity to measure the NS mass and radius and constrain the equation of state. We interpret the features as lines of once-ionized helium formed in the NS atmosphere with a magnetic field of 150 Teragauss, which implies a radius of 9-14 km for a one-solar-mass NS. To measure accurate line energies and resolve potentially multiple lines blended in the low-resolution CCD spectrum, we propose a deep observation with ACIS/LETG. This observation will provide a high-resolution phase-resolved spectrum, required for precise measurement of the NS mass and radius.

R.A. Dec. Target Name Det. Grating Exp.Time
12:10:00.80-52:26:25.101E 1207.4-5209ACIS-SNONE40
12:10:00.80-52:26:25.101E 1207.4-5209ACIS-SLETG260

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 04700532

Title: CONNECTING THE X-RAY AND UV IONIZED ABSORBERS IN MRK 279

Type: LP Total Time: 360

PI Name: Jelle Kaastra

We propose a deep X-ray/UV spectroscopy campaign on the bright Seyfert 1 galaxy Mrk 279, using Chandra LETGS, HST/STIS, and FUSE. Our main scientific goal is to study the AGN outflow seen as an ionized absorber in this galaxy, focusing on the crucial connection between the X-ray and UV manifestations of the outflows. We will map the ionization and velocity structure, measure the elemental abundances and then determine the mass and kinetic luminosity flux of the outflow - all stepping stones for studying the importance of outflows in the evolution of AGN and their host galaxies. In addition we will use the LETGS data to determine the existence of relativistic CNO emission lines in the spectrum.

R.A. Dec. Target Name Det. Grating Exp.Time
13:53:03.50+69:18:29.20MRK 279HRC-SLETG360

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 04800280

Title: SURVEYING THE FORNAX CLUSTER OF GALAXIES

Type: LP Total Time: 500

PI Name: Caleb Scharf

Low luminosity X-ray clusters of galaxies are the dominant reservoirs of bound matter in the Universe. At a distance of 20 Mpc, the Fornax cluster has an immense collection of the highest quality multi-wavelength data, making it an exceptional laboratory for studying the astrophysics of these systems. We propose surveying an inner region of Fornax with Chandra's unprecedented combination of spatial and spectral resolution to produce a keystone dataset with a long-term legacy. We will investigate the interactions of cluster galaxies with the ICM, their populations of globular clusters, search for emission from dwarf galaxies, ultra-compact systems, and intra-cluster planetary nebulae, and compare the ICM metal contents with the detailed history of stellar populations in Fornax.

R.A. Dec. Target Name Det. Grating Exp.Time
03:38:30.00-35:27:04.00FORNAX CLUSTERACIS-INONE50
03:38:58.30-35:10:46.00FORNAX CLUSTERACIS-INONE50
03:39:53.30-35:21:50.00FORNAX CLUSTERACIS-INONE50
03:36:40.50-35:04:49.00FORNAX CLUSTERACIS-INONE50
03:37:35.10-35:16:03.00FORNAX CLUSTERACIS-INONE50
03:39:24.60-35:38:09.00FORNAX CLUSTERACIS-INONE50
03:35:45.90-35:15:45.00FORNAX CLUSTERACIS-INONE50
03:36:40.50-35:27:01.00FORNAX CLUSTERACIS-INONE50
03:37:35.30-35:37:57.00FORNAX CLUSTERACIS-INONE50
03:38:30.00-35:49:04.00FORNAX CLUSTERACIS-INONE50

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 04800927

Title: CHANDRA OBSERVATIONS OF DLS SHEAR-SELECTED CLUSTERS

Type: LP Total Time: 140

PI Name: John Hughes

We propose Chandra observations of the most massive clusters currently identified from the Deep Lens Survey (DLS). The DLS is a deep multicolor (BVRz') imaging survey of 28 square degree being carried out at the 4-m telescopes of the US National Observatories (KPNO and CTIO). The DLS shear-selected cluster sample makes it possible for the first time to study clusters in a baryon-independent way. We are pursuing detailed investigations of this sample with HST and ground-based Keck spectroscopy. Chandra observations will meet multiple high-impact scientific goals, specifically, testing the fair sample'' hypothesis, calibrating the relationships between cluster mass, size, X-ray luminosity and temperature, and studying the evolution of these relationships with look-back time.

R.A. Dec. Target Name Det. Grating Exp.Time
05:22:17.00-48:20:10.00DLS J0522-4820ACIS-INONE20
10:49:41.00-04:17:44.00DLS J1049-0417ACIS-INONE20
10:54:08.00-05:49:44.00DLS J1054-0549ACIS-INONE20
10:55:12.00-05:03:43.00DLS J1055-0503ACIS-INONE20
14:02:12.00-10:28:14.00DLS J1402-1028ACIS-INONE20
09:16:00.00+29:31:34.00DLS J0916+2931ACIS-INONE20
14:02:03.00-10:19:44.00DLS J1402-1019ACIS-INONE20

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 04900340

Title: A CHANDRA WIDE-FIELD SURVEY TO MAP THE COSMIC WEB AND INVESTIGATE THE EVOLUTION OF NUCLEAR ACCRETION

Type: LP Total Time: 275

PI Name: Christine Jones

We propose a wide-field X-ray imaging survey with deep and shallow components in order to map the structure and evolution of the Universe to redshift unity, and to probe the nature, environment and evolutionary history of AGN. The observations will cover the Bootes field of the NOAO Deep Wide-Field Survey, that is unique in its wide-field coverage and availability of deep multiwavelength imaging (including VLA and SIRTF) and optical spectroscopy. The Chandra survey is designed to sample volumes appropriate for statistical investigations of cluster environments, the space density of groups, biases in the optical and X-ray selection of groups and clusters, and AGN phenomena in relation to galaxy host properties and their evolution.

R.A. Dec. Target Name Det. Grating Exp.Time
14:25:44.40+32:56:47.40SS1ACIS-INONE5
14:27:00.60+32:56:47.40SS2ACIS-INONE5
14:28:16.90+32:56:47.40SS3ACIS-INONE5
14:29:33.20+32:56:47.40SS4ACIS-INONE5
14:30:49.50+32:56:47.40SS5ACIS-INONE5
14:33:22.00+32:56:47.40SS7ACIS-INONE5
14:34:38.30+32:56:47.40SS8ACIS-INONE5
14:35:54.50+32:56:47.40SS9ACIS-INONE5
14:37:10.80+32:56:47.40SS10ACIS-INONE5
14:38:27.00+32:56:47.40SS11ACIS-INONE5
14:25:43.20+33:12:47.50SS12ACIS-INONE5
14:26:59.70+33:12:47.50SS13ACIS-INONE5
14:28:16.20+33:12:47.50SS14ACIS-INONE5
14:29:32.70+33:12:47.50SS15ACIS-INONE5
14:30:49.20+33:12:47.50SD16ACIS-INONE5
14:32:05.70+33:12:47.50SD17ACIS-INONE5
14:34:38.70+33:12:47.50SS19ACIS-INONE5
14:35:55.20+33:12:47.50SS20ACIS-INONE5
14:37:11.70+33:12:47.50SS21ACIS-INONE5
14:38:28.20+33:12:47.50SS22ACIS-INONE5
14:25:42.10+33:28:47.60SS23ACIS-INONE5
14:26:58.80+33:28:47.60SS24ACIS-INONE5
14:28:15.50+33:28:47.60SS25ACIS-INONE5
14:29:32.30+33:28:47.60SS26ACIS-INONE5
14:30:49.00+33:28:47.60SD27ACIS-INONE5
14:32:05.70+33:28:47.60SD28ACIS-INONE5
14:33:22.50+33:28:47.60SD29ACIS-INONE5
14:35:55.90+33:28:47.60SS31ACIS-INONE5
14:37:12.60+33:28:47.60SS32ACIS-INONE5
14:38:29.40+33:28:47.60SS33ACIS-INONE5
14:25:40.90+33:44:47.40SS34ACIS-INONE5
14:26:57.80+33:44:47.40SS35ACIS-INONE5
14:28:14.80+33:44:47.40SS36ACIS-INONE5
14:29:31.80+33:44:47.40SS37ACIS-INONE5
14:30:48.70+33:44:47.40SD38ACIS-INONE5
14:32:05.70+33:44:47.40SD39ACIS-INONE5
14:33:22.70+33:44:47.40SD40ACIS-INONE5
14:34:39.60+33:44:47.40SD41ACIS-INONE5
14:37:13.60+33:44:47.40SS43ACIS-INONE5
14:38:30.60+33:44:47.40SS44ACIS-INONE5
14:25:39.70+34:00:47.50SS45ACIS-INONE5
14:26:56.90+34:00:47.50SS46ACIS-INONE5
14:28:14.10+34:00:47.50SS47ACIS-INONE5
14:29:31.30+34:00:47.50SS48ACIS-INONE5
14:30:48.50+34:00:47.50SD49ACIS-INONE5
14:32:05.70+34:00:47.50SD50ACIS-INONE5
14:33:22.90+34:00:47.50SD51ACIS-INONE5
14:34:40.20+34:00:47.50SD52ACIS-INONE5
14:35:57.40+34:00:47.50SS53ACIS-INONE5
14:37:14.60+34:00:47.50SS54ACIS-INONE5
14:38:31.80+34:00:47.50SS55ACIS-INONE5
14:33:22.20+33:12:47.50SD18ACIS-INONE5
14:34:39.20+33:28:47.60SD30ACIS-INONE5
14:35:56.60+33:44:47.40SS42ACIS-INONE5
14:32:05.70+32:56:47.40SS6ACIS-INONE5

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 04901014

Title: A CHANDRA WIDE-FIELD SURVEY TO MAP THE COSMIC WEB AND INVESTIGATE THE EVOLUTION OF NUCLEAR ACCRETION

Type: LP Total Time: 25

PI Name: Christine Jones

We propose a wide-field X-ray imaging survey with deep and shallow components in order to map the structure and evolution of the Universe to redshift unity, and to probe the nature, environment and evolutionary history of AGN. The observations will cover the Bootes field of the NOAO Deep Wide-Field Survey, that is unique in its wide-field coverage and availability of deep multi- wavelength imaging (including VLA and SIRTF) and optical spectroscopy. The Chandra survey is designed to sample volumes appropriate for statistical investigations of cluster environments, the space density of groups, biases in the optical and X-ray selection of groups and clusters, and AGN phenomena in relation to galaxy host properties and their evolution.

R.A. Dec. Target Name Det. Grating Exp.Time
14:26:59.40+32:41:23.00SS57ACIS-INONE5
14:28:12.00+32:41:32.00SS58ACIS-INONE5
14:25:41.80+32:41:09.00SS56ACIS-INONE5
14:29:29.70+32:41:40.00SS59ACIS-INONE5
14:30:42.20+32:41:44.00SS60ACIS-INONE5

Subject Category: BH AND NS BINARIES

Proposal Number: 05400594

Title: High Resolution Photospheric Spectroscopy of the Neutron Star in EXO0748-676

Type: LP Total Time: 300

PI Name: Frits Paerels

Recently, we discovered narrow absorption features in the spectrum of 28 X-ray bursts from the neutron star in the LMXB EXO0748-676, whose properties point to a photospheric origin. The transition wavelengths are consistent with the n=2-3 lines in H- and He-like Fe, exhibiting a gravitational redshift of z=0.35. The measured line strengths indicate that the lines are significantly broadened by the Stark effect, and this will ultimately provide an opportunity to determine both the mass and the radius of this neutron star. Here we propose a very deep spectroscopic observation with Chandra HETGS, to detect the Fe Lyman spectrum and obtain crucial independent spectroscopic confirmation for the Balmer line identification, and to measure the spin period of the neutron star.

R.A. Dec. Target Name Det. Grating Exp.Time
07:48:33.30-67:45:00.00EXO 0748-676ACIS-SHETG300

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 05500623

Title: The Cassiopeia A Explosion: Getting at the Core Issues

Type: VLP Total Time: 1000

PI Name: Una Hwang

We propose a deep 1 Ms observation of the core-collapse remnant Cas A as a unique and important legacy of the Chandra Observatory. These data may be used to construct an observational nucleosynthesis curve giving composition by mass for all the X-ray emitting ejecta, and to study explosion asymmetries, turbulent mixing, particle acceleration, and the compact remnant. Particularly for a detailed study of the various processes that produce and distribute the heavy elements in a core-collapse explosion, Cas A is perhaps the best candidate target. Important results have been obtained with the existing <50 ks observations, but true breakthroughs may be expected with a much deeper exposure that allows us to study nucleosynthesis and core-collapse using Chandra's full spatial resolution.

R.A. Dec. Target Name Det. Grating Exp.Time
23:23:26.70+58:49:03.00Cassiopeia AACIS-SNONE1000

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 05500645

Title: Spatially resolved grating spectrometry of the newborn supernova remnant SNR1987A

Type: LP Total Time: 300

PI Name: Richard McCray

We propose to obtain spatially resolved spectra of the newborn supernova remnant SNR1987A with the ACIS-S/LETG on Chandra. The spectra will provide sufficient counts in several emission lines so that we can, for the first time, directly measure the velocity of the supernova blast wave through line profiles, and the electron temperature through line ratios, as functions of position. We will develop hydrodynamical models to interpret the dispersed X-ray spectra as well as complementary X-ray imaging data and UV and optical images and spectra from the HST and radio images from the Australia Telescope Compact Array.

R.A. Dec. Target Name Det. Grating Exp.Time
05:35:28.00-69:16:11.10SNR1987AACIS-SLETG300

Subject Category: NORMAL GALAXIES

Proposal Number: 05600587

Title: An Ultra-Deep Study of M101

Type: VLP Total Time: 1000

PI Name: K.D. Kuntz

We propose a multi-segmented 1 Ms observation of M101, a near-by face-on spiral in a direction of low Galactic absorption. The observation will detect point sources to L(0.5-2.0 keV)=4x10^35 ergs/s, detect nearly all young to middle-aged SNR, detect and resolve super-bubbles typical of the Milky Way, and provide an unprecedented view of the hot ISM in a spiral galaxy. Coupled with our HST-ACS images, we will be able to measure directly the X-ray output of individual stellar clusters, and better determine the galactic energy budget. The resulting images will bring a wealth of material to a broad range of galactic, stellar, and ISM studies.

R.A. Dec. Target Name Det. Grating Exp.Time
14:03:12.90+54:20:55.60M101ACIS-SNONE858
14:03:33.60+54:20:55.60M101ACIS-SNONE142

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 05700535

Title: A Chandra HETGS & HST view of the Warm and Lukewarm absorbers in IRAS 13349+2438

Type: LP Total Time: 300

PI Name: Julia Lee

We propose 300~ks Chandra HETGS simultaneous with 4 HST orbits primarily to study the warm absorber environment (chemical compositions, velocities, absorbing column) of the archetypal infrared quasar IRAS 13349+2438. We will look for associations between the X-ray and UV absorbers, and study the properties of dust extinction in this source. Inner shell excitation lines from low ionization ions (previously only probed in the UV) will be compared with HST measurements. We will resolve many of the individual lines of the UTA to put ionization limits on a possible lukewarm' absorber. The HST spectrum will give us a first view of Ly-alpha and Si IV in this source at shorter wavelengths.

R.A. Dec. Target Name Det. Grating Exp.Time
13:37:18.70+24:23:03.00IRAS 13349+2438ACIS-SHETG300

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 05800170

Title: A Megasecond Image of the Core of the Perseus Cluster

Type: LP Total Time: 800

PI Name: Andrew Fabian

We propose a further 800 ks observation of the Perseus cluster, A426, the X-ray brightest cluster of galaxies in the sky. By combining this observation with our current data we will obtain a 1 Ms "ultimate image" of the cluster. Our main goal is to quantify the ripples due to the propagating sound waves seen in our 200 ks image. A detailed understanding of the mechanisms in the nearby Perseus cluster will unable us to fully understand the solution to the "cooling flow problem". The Perseus cluster is the only extragalactic source with such a high ACIS-S surface brightness over many sq arcmin. We propose that it should be observed as deeply as possible with Chandra and before any further degradation takes place in the performance of the detectors or spacecraft.

R.A. Dec. Target Name Det. Grating Exp.Time
03:19:48.20+41:30:42.20Abell 426ACIS-SNONE200
03:19:48.20+41:30:42.20Abell 426ACIS-SNONE200
03:19:48.20+41:30:42.20Abell 426ACIS-SNONE200
03:19:48.20+41:30:42.20Abell 426ACIS-SNONE200

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 05800890

Title: THE MOST INTERESTING CLUSTER IN THE UNIVERSE

Type: LP Total Time: 500

PI Name: Maxim Markevitch

The galaxy cluster 1E0657-56 is a treasure trove of information on just about every problem in cluster physics. It is the only cluster known to have a shock front with M substantially greater than 1. The proposed 500 ks observation, combined with the existing 90 ks, will allow us to determine whether electrons are heated adiabatically or dissipatively in a shock and whether the electron-ion equilibration is efficient. We will search for an electron temperature precursor to the shock to estimate thermal conductivity. We also will determine the importance of gas turbulence and study the destruction of a cooling flow remnant by ram pressure. Combined with data from other wavelengths, this observation can also shed light on the nature of dark matter and the origin of cluster radio halos.

R.A. Dec. Target Name Det. Grating Exp.Time
06:58:19.70-55:56:20.001E0657-56ACIS-INONE500

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 05900218

Title: The Extended Chandra Deep Field-South Survey: A Public Chandra Legacy

Type: VLP Total Time: 1000

PI Name: William Brandt

We propose to extend the 1 Ms Chandra Deep Field-South (CDF-S) survey with six public 330 ks flanking observations: the Extended CDF-S (E-CDF-S). Using these, we will study the detailed cosmic history of accretion onto supermassive black holes, the role of moderate-luminosity AGN at high redshift, AGN clustering, and X-ray groups and low-luminosity clusters. The proposed observations are optimized to fill the X-ray luminosity/redshift plane at z > 1.5 where the AGN source statistics are still limited. Follow-up studies will exploit the superb E-CDF-S multiwavelength coverage including VLT/Keck spectroscopy (6000+ VLT redshifts), HST imaging (GEMS, GOODS, ACS Ultradeep Field; 734 HST orbits), intensive ground-based imaging, and scheduled SIRTF observations.

R.A. Dec. Target Name Det. Grating Exp.Time
03:33:03.64-27:41:20.68Extended CDF-S #1ACIS-INONE250
03:31:50.54-27:41:18.28Extended CDF-S #2ACIS-INONE250
03:31:50.31-27:57:31.89Extended CDF-S #3ACIS-INONE250
03:33:03.69-27:57:33.23Extended CDF-S #4ACIS-INONE250

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 05900547

Title: The Balance of Power between Starbursts and AGN: a Chandra/SIRTF Survey.

Type: LP Total Time: 630

PI Name: Belinda Wilkes

We propose a moderate-depth (70 ksec), 0.6 sq.deg. Chandra survey, the deepest/largest CONTIGUOUS area to date, in the Lockman Field of the SIRTF/SWIRE Legacy Survey coincident with a completed, ultra-deep VLA survey with deep optical and near-IR imaging in-hand. SWIRE, the largest SIRTF program, will detect >500 000 dusty galaxies to z > 2.5 in 7 fields covering 65 sq.degs. The prime science goal is to study the structure, evolution and environments of AGN, starbursts and ellipsoids over the SAME SPATIAL VOLUME out to z > 2.5. Key to this study is an X-ray survey deep enough to distinguish starbursts and AGN, including the significant, highly obscured (log Nh>22) subset. Chandra will secure X-ray identification and fluxes for ~550 (0.6 sq deg) of the field's ~7000 SWIRE sources.

R.A. Dec. Target Name Det. Grating Exp.Time
10:46:00.00+59:00:60.00SWIRE LOCKMAN 5 (center)ACIS-INONE70
10:43:60.00+58:45:60.00SWIRE LOCKMAN 1ACIS-INONE70
10:46:00.00+58:45:60.00SWIRE LOCKMAN 2ACIS-INONE70
10:48:00.00+58:45:60.00SWIRE LOCKMAN 3ACIS-INONE70
10:43:60.00+59:00:60.00SWIRE LOCKMAN 4ACIS-INONE70
10:48:00.00+59:00:60.00SWIRE LOCKMAN 6ACIS-INONE70
10:43:60.00+59:15:60.00SWIRE LOCKMAN 7ACIS-INONE70
10:46:00.00+59:15:60.00SWIRE LOCKMAN 8ACIS-INONE70
10:48:00.00+59:15:60.00SWIRE LOCKMAN 9ACIS-INONE70

Subject Category: SOLAR SYSTEM

Proposal Number: 06100312

Title: Comet 9P/Tempel 1 During the Deep Impact Encounter

Type: LP Total Time: 291.6

PI Name: Carey Lisse

We propose a series of observations of the periodic comet 9P/Tempel 1 in conjunction with NASA's Deep Impact mission. This mission is a spacecraft that will release a 370 kg impactor into the nucleus of the comet on July 4, 2005 at high relative velocity. Our primary objective is to study the generation of prompt x-rays in the impact plume and the change in charge exchange created x-rays as the impact ejecta propgates through the neutral coma. To this end we plan to obtain ACIS-S imaging spectroscopy before, during, and following the impact.

R.A. Dec. Target Name Det. Grating Exp.Time
9P/Tempel 1ACIS-SNONE300

Subject Category: STARS AND WD

Proposal Number: 06200204

Title: A Chandra HETGS Survey of O-Stars

Type: VLP Total Time: 594

PI Name: Wayne Waldron

We are requesting HETGS observations of 6 normal O-stars to further explore the characteristics and the origin of the remarkably detailed X-ray line spectra that has been revealed by Chandra. These new targets have been carefully selected on the basis of their normal optical and UV spectra, instead of their X-ray brightness or peculiarity. Along with archival HETGS spectra, this collection will provide complete coverage of the O-star domain in the H-R diagram. The spectra from this unbiased sample will be assembled in a comprehensive X-ray atlas, which will be used to search for morphological trends in the emission lines as a function of stellar parameters. These trends will guide the development of quantitative models to explain the behavior of the X-ray emission lines of O-type stars.

R.A. Dec. Target Name Det. Grating Exp.Time
10:43:57.50-59:32:51.00HD93129ABACIS-SHETG145
18:03:52.40-24:21:38.609 SgrACIS-SHETG147
10:44:45.00-59:33:54.70HD93250ACIS-SHETG194
06:40:58.70+09:53:44.7015 MonACIS-SHETG108

Subject Category: STARS AND WD

Proposal Number: 06200294

Title: The X-ray Spectrum of a Planetary Nebula at High Resolution

Type: LP Total Time: 300

PI Name: Joel Kastner

Planetary nebulae (PNs) provide unique insights into a wide range of astrophysical phenomena. X-ray imaging of PNs by CXO has now broken open the study of very high temperature gas in these objects. To make further progress, we require detailed information concerning gas temperature and composition as a function of position within X-ray emitting PN "hot bubbles." Such information can be obtained only from observations combining high spectral and spatial resolution. We propose a 300 ks LETG/ACIS-S exposure of BD+303639, a particularly X-ray-bright PN. Such a deep, high spectral resolution observation of a PN has yet to be attempted. The proposed observation thus represents a potential breakthrough in our understanding of the origin and evolution of PNs.

R.A. Dec. Target Name Det. Grating Exp.Time
19:34:45.20+30:30:58.90BD +303639ACIS-SLETG300

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 06500333

Title: The Structure and Composition of Pulsar Winds and their Nebulae

Type: LP Total Time: 190

PI Name: Patrick Slane

Chandra studies of pulsar wind nebulae have revealed stunning new information on the composition of the winds, the presence of jets and equatorial outflows, and the structure in and around the wind termination shock. Monitoring observations reveal temporal variations in resolved structures that challenge our understanding of particle acceleration and energy flow in these systems. Here we propose deep observations of G54.1+0.3 and PSR B1509-58 in order to probe the complex structure in their interior regions at arcsecond resolution. These observations will allow us to measure the spectrum and morphology of these features in order to constrain models for particle acceleration, the formation and structure of jets, and the geometry of particle flows in PWNe.

R.A. Dec. Target Name Det. Grating Exp.Time
15:13:55.60-59:08:08.90PSR B1509-58ACIS-INONE190

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 06500496

Title: Search for Sub-Millisecond Pulsars in 47 Tuc

Type: VLP Total Time: 800

PI Name: Robert Rutledge

We propose an observation with the ability to detect multiple isolated sub-millisecond pulsars among the unidentified X-ray sources in 47 Tuc, with significant secondary science. Observations in the X-ray band overcome the limited time resolution of even the best radio observations, allowing for the first time the setting of a new speed record'' for pulsars at sub-ms periods, below the now 20-year-old record of P = 1.558 ms. The detection of sub-ms pulsars would rule out equations of state for dense matter, provide even better clocks for their many physics applications, and create a strong impetus for future improvement of observational techniques. The absence of sub-ms pulsars would provide compelling evidence for a spin period limit.

R.A. Dec. Target Name Det. Grating Exp.Time
00:24:05.20-72:04:49.9047 TucHRC-SNONE800

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 06500950

Title: Spectra of Neutron Stars with Strongly Magnetized Hydrogen Atmospheres

Type: LP Total Time: 300

PI Name: Marten van Kerkwijk

Neutron stars are unique laboratories for matter at extreme densities and magnetic field strengths. Much of the physics is encapsulated in neutron star spectra, but until recently no suitable sources were known. However, over the last year photospheric absorption features - likely due to hydrogen in strongly magnetized atmospheres - have been found for three nearby neutron stars. We propose to obtain high-quality, 300 ks LETG spectra of the two brightest sources. These data will allow examination of the absorption features and permit searches for other associated features. With detailed understandings of these lines one could measure the surface magnetic fields, compositions and temperatures, eventually leading to direct constraints on the equation of state at supra-nuclear densities.

R.A. Dec. Target Name Det. Grating Exp.Time
07:20:25.00-31:25:50.20RX J0720.4-3125HRC-SLETG300

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 06800101

Title: DARK ENERGY WITH X-RAY CLUSTERS: CHANDRA OBSERVATIONS OF 41 HIGH-REDSHIFT CLUSTERS FROM THE 400 deg^2 ROSAT PSPC SURVEY

Type: LP Total Time: 615

PI Name: Alexey Vikhlinin

We propose Chandra observations to measure temperature and gas mass in a sample of 41 high-z galaxy clusters from our 400 deg^2 ROSAT survey. This sample is comparable in number to all clusters in the local Universe (z<0.1) above a similar limiting mass, and covers a factor of 3 larger volume at z=0.4-1. Chandra observations will provide the total mass function estimates at =0.4, 0.5, and 0.65, which can be directly compared with the local measurements at =0.05. These data will provide a measurement of the dark energy equation of state via the cluster evolution test which is completely independent from SN Ia and CMB and has different degeneracies. Some targets in this proposal are in common with the HRC GTO proposal 06900018. These programs are not in conflict.

R.A. Dec. Target Name Det. Grating Exp.Time
02:30:26.60+18:36:22.00cl0230+1836ACIS-INONE70
03:28:36.10-21:40:04.00cl0328-2140ACIS-INONE60
04:05:24.30-41:00:15.00cl0405-4100ACIS-INONE80
05:21:10.50-25:30:36.00cl0521-2530ACIS-INONE15
09:56:02.80+41:07:08.00cl0956+4107ACIS-INONE40
02:16:33.70-17:47:27.00cl0216-1747ACIS-INONE65
03:55:59.30-37:41:46.00cl0355-3741ACIS-INONE30
00:30:33.60+26:18:16.00cl0030+2618ACIS-INONE20
13:57:19.40+62:32:42.00cl1357+6232ACIS-INONE45
08:53:13.40+57:59:44.00cl0853+5759ACIS-INONE25
12:22:01.90+27:09:19.00cl1222+2709ACIS-INONE50
12:12:19.20+27:33:13.00cl1212+2733ACIS-INONE15
12:02:13.70+57:51:53.00cl1202+5751ACIS-INONE60
03:33:10.30-24:56:40.00cl0333-2456ACIS-INONE40

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 06800102

Title: A CHANDRA TREASURY OBSERVATION OF THE BEST EXAMPLE OF A CLUSTER COLD FRONT

Type: LP Total Time: 450

PI Name: Alexey Vikhlinin

We propose a 450 ksec observation of A3667, the best example of a cluster cold front. A deep image of the best cold front by the highest angular resolution X-ray telescope will push the study of the physics of the intracluster medium to the limit. Our main goals are 1) to observe the turbulence in the intracluster medium by direct imaging of any perturbations of the front surface; 2) to study transport processes in the ICM using the gas density and temperature profiles across the front with a spatial resolution of 1/5 of the Coulomb mean free path; 3) to characterize the magnetic field structure by mapping the onset of the Kelvin-Helmholtz instability. The proposed deep Chandra image of A3667 will be one of the treasury images of the X-ray astronomy.

R.A. Dec. Target Name Det. Grating Exp.Time
20:12:50.80-56:50:53.90Abell 3667ACIS-INONE450

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 06800613

Title: The History of AGN Activity in M87 and the Interaction of Nuclear Outbursts with the Surrounding Atmosphere

Type: LP Total Time: 512

PI Name: William Forman

We propose a 500 ksec ACIS-I observation to study the interaction between energy outbursts from the supermassive black hole (SMBH) in M87 and its surrounding gaseous atmosphere. We will inventory the plasma bubbles inflated by the SMBH, search for weak shocks, study the interaction of relativistic plasma in bubbles with the surrounding hot gas, measure turbulence in the cluster gas, study the microphysics of the interaction between the plasma in the bubbles and the surrounding gas, and estimate the gas viscosity by measuring the width of shock fronts. By determining the energy associated with bubbles and shocks, we can chronicle the mechanical power output of the SMBH. Finally we will study particle acceleration and cooling models by measuring inter-knot spectra along the jet.

R.A. Dec. Target Name Det. Grating Exp.Time
12:30:49.50+12:23:28.00M87ACIS-INONE500
12:30:49.50+12:23:28.00M87ACIS-INONE12

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 06900444

Title: Deep Chandra Imaging of the Extended Groth Strip: The Co-evolution of Black Holes and Galaxies

Type: VLP Total Time: 1400

PI Name: Kirpal Nandra

The Extended Groth Strip (EGS) is a half square degree region that has been targeted intensively for galaxy evolution studies. A remarkable array of ultra-deep data have been or will be accumulated, to include radio, near/mid/far IR, optical and UV data of depth comparable to or better than any part of the sky. It is also the subject of the massive DEEP2 redshift survey, giving high quality Keck spectra for 16-17,000 galaxies. The clear gap in the coverage of the EGS is in the X-ray, and we therefore propose to augment the single deep Chandra pointing with 7 more, to image the whole strip. Our goal is to study the co-evolution of galaxies and black holes, by examining in detail the astrophysics of AGN activity, and its relationship to the host galaxy and surrounding large scale structure.

R.A. Dec. Target Name Det. Grating Exp.Time
14:22:54.80+53:25:32.50EGS-1ACIS-INONE200
14:21:45.20+53:13:22.70EGS-2ACIS-INONE200
14:20:40.50+53:01:56.30EGS-3ACIS-INONE200
14:19:36.40+52:50:27.70EGS-4ACIS-INONE200
14:18:32.90+52:38:56.90EGS-5ACIS-INONE200
14:16:49.50+52:19:57.60EGS-6ACIS-INONE200
14:15:47.50+52:08:21.40EGS-7ACIS-INONE200

Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 06910168

Title: Massive Star Life, Death, and Rebirth in the Perseus Arm

Type: LP Total Time: 200

PI Name: Leisa Townsley

This joint Chandra/XMM mosaic of W4/W3/HB3 allows us to chronicle the X-ray output of the entire life cycle of high-mass stars, from their intrinsic and wind-collision emission, through their SN phase, and back to the embedded, protostellar X-rays heralding the next generation of massive star formation. In addition we see the feedback of these massive stars on the interstellar medium in the Perseus Arm: the stellar winds from a massive young cluster (IC 1805) have blown the W4 superbubble and chimney; perhaps an older superbubble is over 100 times brighter in X-rays due to supernovae in its interior (HB3), and the expansion of these bubbles is compressing the W3 molecular cloud and triggering a new generation of stars to form.

R.A. Dec. Target Name Det. Grating Exp.Time
02:27:04.10+61:52:22.00W3(OH)ACIS-INONE80
02:25:40.60+62:05:52.40W3 Main IRS5ACIS-INONE40
02:26:50.80+62:15:52.00W3 NorthACIS-INONE80

Subject Category: STARS AND WD

Proposal Number: 07200124

Title: The Initial Mass Function in the Outer Galaxy: The star forming region NGC 1893

Type: LP Total Time: 450

PI Name: Giuseppina Micela

We will explore the effects of environmental conditions, which change dramatically between the inner and outer regions of the Galaxy, on the initial mass function (IMF) of the star forming region NGC 1893. Our proposed 450 ksec observation of NGC 1893, a SFR of ~3 Myr in the outer part of the Galaxy, joint with two hours of Spitzer data, will permit us to identify members down to 0.5 Msun and enable a comparison of NGC 1893's IMF with those derived for SFRs in the solar neighborhood. Our observations will help in determining, particularly in the low mass regime, how the IMF depends on galactic environment. With its spatial resolution and sensitivity, Chandra, with the support of Spitzer, is uniquely suited to achieve our objectives.

R.A. Dec. Target Name Det. Grating Exp.Time
05:22:50.00+33:28:05.00NGC 1893ACIS-INONE450

Subject Category: STARS AND WD

Proposal Number: 07200367

Title: Winds, OB Populations, and Young Stars: New Science from M17

Type: LP Total Time: 300

PI Name: Leisa Townsley

We propose to use two ACIS-I pointings centered on the young, massive OB cluster in M17 (the Omega Nebula) and on its powerful X-ray outflow as a testbed for understanding recent and ongoing star formation in the M17 complex and its environmental impact. This rich field is perfect for studying X-ray emission from high-mass as well as intermediate/low-mass stars and for comparing the X-ray luminosity function in a high-mass complex to that in the closer, less powerful Orion Nebula Cluster, recently established by a long Chandra exposure. M17 is ideal for exploring the properties of diffuse X-ray emission to elucidate wind/wind and wind/cloud shock physics in HII regions and for studying embedded stellar clusters and massive protostars forming as M17 interacts with its molecular cloud.

R.A. Dec. Target Name Det. Grating Exp.Time
18:20:29.90-16:10:44.90M17 Pointing IACIS-INONE200
18:21:33.50-16:11:55.90M17 Pointing IIACIS-INONE100

Subject Category: BH AND NS BINARIES

Proposal Number: 07400594

Title: The lowest-luminosity quiescent neutron star transient: implications for strong field gravity and the neutron star EoS

Type: LP Total Time: 300

PI Name: Peter Jonker

We propose to obtain a 300 ksec ACIS-S observation of the quiescent neutron star (NS) SXT 1H1905+000. Because of a non-detection during a previous 25 ksec Chandra ACIS-S observation, the NS quiescent luminosity is the lowest of all NS SXTs. It also has a low N_H, a well-known source distance, and an accurately known source position. These observations will eliminate the gap in the derived quiescent luminosities between NS and BH SXTs which is used as being evidence for a BH event horizon. Furthermore, this extremely low NS luminosity allows us to derive that 1H1905+000 harbors a cold, massive NS ruling out all equations of state (EoSs) except the stiffest EoSs for NSs with a nucleonic core. Constraining the NS EoS is one of the ultimate goals of NS studies.

R.A. Dec. Target Name Det. Grating Exp.Time
19:08:27.00+00:10:08.001H 1905+000ACIS-SNONE300

Subject Category: BH AND NS BINARIES

Proposal Number: 07400810

Title: CHAZSS: The Chandra HETGS Atoll/Z Spectroscopic Survey

Type: LP Total Time: 300

PI Name: Jon Miller

High-res. X-ray spectroscopy of accretion-powered sources in the Chandra era has focused on black holes. Neutron stars with low magnetic fields - "Z" and "atoll" binaries - have largely been ignored and/or poorly observed at high resolution. We propose a survey of 6 "Z" and "atoll" neutron star binaries. In a total of only 300 ksec, we can observe each of the 6 sources in our sample twice, obtaining consistent, robust, and constraining spectra free from photon pile-up. High-res. spectroscopy will break degeneracies in X-ray timing-based models for the accretion flows in these systems, and provide new insights into both the origin of the "kHz" QPOs seen in these sources and the nature of the "Z" and "atoll" tracks they trace in color-color diagrams.

R.A. Dec. Target Name Det. Grating Exp.Time
17:02:44.50-36:25:23.00GX 349+2ACIS-SHETG50
18:16:01.40-14:02:11.00GX 17+2ACIS-SHETG50
16:45:47.70-45:36:40.00GX 340+0ACIS-SHETG50
18:23:40.50-30:21:40.004U 1820-30ACIS-SHETG50
16:40:55.50-53:45:05.004U 1636-53ACIS-SHETG50
17:38:58.30-44:27:00.004U 1735-44ACIS-SHETG50

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 07500318

Title: O-Rich SNR G292.0+1.8: A Textbook Example of a Galactic Core-Collapse SNR

Type: LP Total Time: 530

PI Name: Sangwook Park

G292.0+1.8 is the only Galactic supernova remnant (SNR) known to exhibit all the expected characteristics of a core-collapse SNR: stellar ejecta enriched in oxygen, an active pulsar and its wind nebula, and evidence for blast wave interaction with circumstellar material. G292.0+1.8 thus provides an invaluable opportunity for the study of nucleosynthesis and the shock evolution of core-collapse SNRs. We have commenced such a study with our initial Chandra observations of G292.0+1.8. In order to continue the study of this important object, we propose a Chandra Large Project (LP) of G292.0+1.8. The proposed observations will probe the structure of this SNR in unprecedented detail, and will provide an ideal complementary program to the existing Chandra Very Large Project of Cassiopeia A.

R.A. Dec. Target Name Det. Grating Exp.Time
11:24:39.10-59:16:20.00G292.0+1.8ACIS-INONE530

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 07500764

Title: Kepler's Supernova Remnant: Circumstellar Interactions, Particle Acceleration, and Type Ia Supernova Origins

Type: LP Total Time: 750

PI Name: Stephen Reynolds

Recent work implies that Kepler's supernova remnant resulted from a Type Ia event, but circumstellar medium (CSM) interaction is also evident. Neither the progenitors nor the detailed explosion mechanisms of SNe Ia are understood, so Kepler offers us a unique opportunity to constrain the progenitor by studying CSM interactions, and the explosion mechanism by studying ejecta. We propose a 750 ks observation, to map the Fe K alpha line on spatial 5" scales, and obtain high-quality spectra in brighter regions on 8" scales. Fe K will map ejecta and discriminate thermal and nonthermal emission at rims. K lines of other alpha elements will show stratification; all should show Doppler broadening to characterize dynamics. A deep observation of Kepler should be a legacy of Chandra.

R.A. Dec. Target Name Det. Grating Exp.Time
17:30:42.00-21:29:00.00Kepler's Supernova RemnantACIS-SNONE750

Subject Category: NORMAL GALAXIES: DIFFUSE EMISSION

Proposal Number: 07610889

Title: The Chandra ACIS Survey of M33 (ChASeM33): A Deep Survey of the Nearest Face-on Spiral Galaxy

Type: VLP Total Time: 1400

PI Name: Manami Sasaki

We propose to study the overall ecology' of spiral galaxies - the diffuse ISM and the compact sources within - through a survey of M33, the closest face-on spiral. Our ACIS-I survey will cover the central region of M33 with a sensitivity of 5.E34 erg/s for point sources and 1.E35 erg/s for diffuse ones, at least a factor of two deeper than existing XMM data. More importantly, Chandra's superior spatial resolution will give a detailed view of complex structures (superbubbles, supernova remnants, and truly diffuse hot gas) on all scales > 10 pc, will resolve source confusion that confounds previous studies, and will enable identification of most point sources. The rich data set from the M33 survey, together with what promises to be an iconic image, ought to be part of Chandra's legacy.

R.A. Dec. Target Name Det. Grating Exp.Time
01:33:27.90+30:31:25.30M33 Field 5ACIS-INONE200
01:34:07.70+30:30:32.80M33 Field 6ACIS-INONE200
01:34:30.70+30:38:44.50M33 Field 7ACIS-INONE200
01:33:50.80+30:39:36.60M33 Field 1ACIS-INONE200
01:34:13.80+30:47:48.10M33 Field 2ACIS-INONE200
01:33:33.90+30:48:40.70M33 Field 3ACIS-INONE200
01:33:11.00+30:40:28.90M33 Field 4ACIS-INONE200

Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS

Proposal Number: 07620395

Title: A Chandra legacy program: deep study of LMXB populations

Type: VLP Total Time: 770

PI Name: Giuseppina Fabbiano

LMXBs are the only direct fossil evidence of the formation and evolution of binary stars in elliptical galaxies. To understand LMXB formation and evolution, and address the role of globular clusters (GC) in these processes, we propose a 1,245Ks ACIS-S program to study LMXB populations of elliptical galaxies, to limiting luminosities well in the range of normal neutron star binaries. We will study, and compare with models, the spatial distributions and spectral properties of these sources. We will derive, and compare with population synthesis models, their low-luminosity XLFs. Our monitoring approach will constrain the fraction of transients, thus placing important limits on formation mechanisms, binary evolution and disk outburst theory.

R.A. Dec. Target Name Det. Grating Exp.Time
10:47:49.70+12:34:54.60NGC3379ACIS-SNONE310
12:20:06.80+29:16:50.70NGC4278ACIS-SNONE460

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 07800432

Title: The Cosmological Formation of Galaxy Groups

Type: LP Total Time: 401

PI Name: David Buote

One of the strongest, untested cosmological predictions is the scatter of the concentrations of dark matter halos on the group scale. To quantify this scatter of concentrations requires well-defined samples. We propose a novel systematic study of the core properties of 15 groups representing a complete, X-ray flux-limited sample. In addition to dark matter properties, we will address: (1) entropy and non-gravitational heating, (2) central iron abundances and stellar enrichment, (3) AGN heating and the cooling flow paradox, and (4) the formation of central galaxies. The implications of these measurements for cosmology, supernovae history, star formation and AGN heating will be assessed with numerical simulations. We request observations of 10 unobserved groups in our sample

R.A. Dec. Target Name Det. Grating Exp.Time
11:10:32.60+28:42:59.00RXC J1110.5+2842ACIS-SNONE27
11:00:48.90+10:33:35.00RXC J1100.8+1033ACIS-SNONE27
12:06:37.40+28:11:01.00RXC J1206.6+2811ACIS-SNONE36
11:09:43.10+21:45:43.00RXC J1109.7+2145ACIS-SNONE37
13:20:15.40+33:08:30.00RXC J1320.2+3308ACIS-SNONE39
10:22:04.70+38:30:43.00RXC J1022.0+3830ACIS-SNONE42
11:47:20.70+55:44:36.00RXC J1147.3+5544ACIS-SNONE44
13:24:11.90+13:58:45.00RXC J1324.1+1358ACIS-SNONE47
11:30:01.80+36:37:49.00RXC J1130.0+3637ACIS-SNONE50
11:34:50.50+49:03:28.00RXC J1134.8+4903ACIS-SNONE52

Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 07910613

Title: A Legacy Study of Stellar Life Cycles at the Galactic Center

Type: VLP Total Time: 600

PI Name: Michael Muno

We propose a set of 27 40 ks Chandra observations of the central 300x80 pc of the Galaxy, as part of a multiwavelength project to study stellar life cycles in the region. Our observations will increase the number of accreting compact objects detected there by a factor of 10, to 12,000. This sample will: (1) increase the known number of HMXBs with IR counterparts several-fold, providing stringent tests of population synthesis models, (2) provide spectral and timing data on a new class of faint X-ray transients, (3) identify the sites of recent star formation by detecting their X-ray luminous WR/O stars, (4) identify elusive young pulsars near the Galactic Center, and (5) constrain the physics of particle acceleration in the mysterious radio filaments.

R.A. Dec. Target Name Det. Grating Exp.Time
17:46:31.80-28:36:38.20Deep GCS 23ACIS-INONE40
17:45:45.60-28:30:27.40Deep GCS 24ACIS-INONE40
17:47:18.10-28:42:47.90Deep GCS 25ACIS-INONE40
17:45:17.40-28:40:35.80Deep GCS 26ACIS-INONE40
17:46:50.00-28:52:57.40Deep GCS 27ACIS-INONE40
17:44:49.10-28:50:43.40Deep GCS 1ACIS-INONE40
17:44:20.70-29:00:51.10Deep GCS 4ACIS-INONE40
17:45:53.50-29:13:15.20Deep GCS 5ACIS-INONE40
17:44:38.60-29:17:11.40Deep GCS 6ACIS-INONE40
17:43:52.20-29:10:58.10Deep GCS 7ACIS-INONE40
17:45:25.10-29:23:23.60Deep GCS 8ACIS-INONE40
17:43:23.70-29:21:05.00Deep GCS 10ACIS-INONE40
17:43:41.50-29:37:25.70Deep GCS 12ACIS-INONE40
17:42:55.00-29:31:11.30Deep GCS 13ACIS-INONE40
17:45:07.10-29:07:03.70Deep GCS 3ACIS-INONE40

Subject Category: STARS AND WD

Proposal Number: 08200704

Title: Accretion or a Corona? Definitive Observations of the Young Accreting Star TW Hydrae

Type: LP Total Time: 500

PI Name: Nancy Brickhouse

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.

R.A. Dec. Target Name Det. Grating Exp.Time
11:01:52.00-34:42:16.90TW HyaACIS-SHETG500

Subject Category: WD BINARIES AND CV

Proposal Number: 08300134

Title: Testing the Physics of Magnetic Accretion: EX Hydrae from the Shock to the White Dwarf Surface

Type: LP Total Time: 500

PI Name: Ronnie Hoogerwerf

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.

R.A. Dec. Target Name Det. Grating Exp.Time
12:52:24.20-29:14:56.70EX HydraeACIS-SHETG500

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 08500520

Title: SPATIALLY RESOLVED LETG SPECTROMETRY OF SNR1987A

Type: LP Total Time: 300

PI Name: Richard McCray

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.

R.A. Dec. Target Name Det. Grating Exp.Time
05:35:28.00-69:16:11.10SNR1987AACIS-SLETG300

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 08500758

Title: A Deep Chandra Observation of the Tycho Supernova Remnant

Type: LP Total Time: 150

PI Name: John Hughes

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.

R.A. Dec. Target Name Det. Grating Exp.Time
00:25:19.00+64:08:10.00Tycho's SNRACIS-INONE150

Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS

Proposal Number: 08620985

Title: Massive Star Formation and Energy Feedback in the Starburst Region N11

Type: LP Total Time: 300

PI Name: You-Hua Chu

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.

R.A. Dec. Target Name Det. Grating Exp.Time
04:56:31.50-66:27:47.00LHA 120-N 11ACIS-INONE300

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 08700512

Title: Jets, Bubbles, Binaries, and Hot Gas: A Deep Observation of Centaurus A

Type: VLP Total Time: 600

PI Name: Ralph Kraft

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.

R.A. Dec. Target Name Det. Grating Exp.Time
13:25:33.00-43:00:11.00Centaurus A JetACIS-INONE600

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 08700551

Title: The Chandra-RBGS Survey of a Complete Sample of Luminous Infrared Galaxies

Type: LP Total Time: 390

PI Name: David Sanders

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 ?

R.A. Dec. Target Name Det. Grating Exp.Time
01:38:52.90-10:27:11.40IRAS F01364-1042ACIS-SNONE15
04:46:49.50-48:33:32.90ESO 203-IG001ACIS-SNONE15
06:27:23.10-47:10:47.00ESO 255-IG007ACIS-SNONE15
07:27:37.60-02:54:54.10IRAS 07251-0248ACIS-SNONE15
09:04:12.70-36:27:01.10IRAS 09022-3615ACIS-SNONE15
09:13:38.80-10:19:20.30IRAS F09111-1007ACIS-SNONE15
10:06:04.80-33:53:15.00IC 2545ACIS-SNONE15
10:20:00.20+08:13:34.00IRAS F10173+0828ACIS-SNONE15
13:15:06.40-55:09:22.70IRAS 13120-5453ACIS-SNONE15
13:15:35.00+62:07:28.80VV 250aACIS-SNONE15
13:20:35.30+34:08:22.20UGC 08387ACIS-SNONE15
14:57:00.70+24:37:02.70VV 340aACIS-SNONE15
16:38:13.20-68:26:42.80ESO 069-IG006ACIS-SNONE15
17:14:20.00+53:10:30.00IRAS F17132+5313ACIS-SNONE15
18:32:41.10-34:11:27.50IRAS F18293-3413ACIS-SNONE15
19:14:30.90-21:19:07.00ESO 593-IG008ACIS-SNONE15
19:56:35.40+11:19:02.60IRAS 19542+1110ACIS-SNONE15
20:57:23.30+17:07:34.30CGCG 448-020ACIS-SNONE15
21:11:30.40+58:23:03.20IRAS 21101+5810ACIS-SNONE15
22:49:39.90-48:50:58.10ESO 239-IG002ACIS-SNONE15
22:51:49.30-17:52:23.50IRAS F22491-1808ACIS-SNONE15
23:21:04.30-69:12:54.00ESO 077-IG014ACIS-SNONE15
05:16:46.40+79:40:12.60VII Zw 031ACIS-SNONE15
08:52:29.90-69:01:58.00ESO 60-IG016ACIS-SNONE15
14:40:59.00-37:04:32.00IRAS F14378-3651ACIS-SNONE15
19:32:21.20-03:59:56.30IRAS F19297-0406ACIS-SNONE15

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 08700916

Title: The Definitive Chandra Observations of NGC 4258

Type: LP Total Time: 320

PI Name: Michael Nowak

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.

R.A. Dec. Target Name Det. Grating Exp.Time
12:18:58.00+47:18:14.00NGC 4258ACIS-SHETG320

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 08800952

Title: A Complete Baryon Census in a Nearby Galaxy Group

Type: LP Total Time: 440

PI Name: John Mulchaey

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.

R.A. Dec. Target Name Det. Grating Exp.Time
08:20:23.70+21:05:00.50NGC2563-P1ACIS-INONE50
08:21:32.10+20:49:01.00NGC2563-P2ACIS-INONE30
08:20:23.70+20:49:01.60NGC2563-P3ACIS-INONE30
08:20:23.70+21:20:57.90NGC2563-P5ACIS-INONE30
08:19:15.10+21:04:59.40NGC2563-P6ACIS-INONE30
08:19:15.30+20:49:00.40NGC2563-P7ACIS-INONE30
08:19:15.00+21:20:56.80NGC2563-P8ACIS-INONE30
08:22:40.20+21:02:03.90NGC2563-P9ACIS-INONE30
08:21:32.20+21:04:60.00NGC2563-P10ACIS-INONE30
08:18:50.80+21:42:31.10NGC2563-P11ACIS-INONE30
08:18:00.00+20:49:42.20NGC2563-P12ACIS-INONE30
08:19:17.70+20:33:33.70NGC2563-P13ACIS-INONE30
08:23:16.40+21:23:09.90NGC2563-P14ACIS-INONE30
08:21:32.30+21:20:57.40NGC2563-P4ACIS-INONE30

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 08900073

Title: THE CHANDRA-COSMOS SURVEY

Type: VLP Total Time: 1800

PI Name: Martin Elvis

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.

R.A. Dec. Target Name Det. Grating Exp.Time
10:01:48.80+02:37:23.90C-COSMOS1-1ACIS-INONE50
10:01:16.80+02:37:23.90C-COSMOS1-2ACIS-INONE50
10:00:44.80+02:37:23.90C-COSMOS1-3ACIS-INONE50
09:59:40.80+02:37:23.90C-COSMOS1-5ACIS-INONE50
09:59:08.80+02:37:23.90C-COSMOS1-6ACIS-INONE50
10:01:48.80+02:29:24.00C-COSMOS2-1ACIS-INONE50
10:01:16.80+02:29:24.00C-COSMOS2-2ACIS-INONE50
10:00:12.80+02:29:24.00C-COSMOS2-4ACIS-INONE50
09:59:40.80+02:29:24.00C-COSMOS2-5ACIS-INONE50
09:59:08.80+02:29:24.00C-COSMOS2-6ACIS-INONE50
10:01:48.80+02:21:24.10C-COSMOS3-1ACIS-INONE50
10:00:44.80+02:21:24.10C-COSMOS3-3ACIS-INONE50
10:00:12.80+02:21:24.10C-COSMOS3-4ACIS-INONE50
09:59:40.80+02:21:24.10C-COSMOS3-5ACIS-INONE50
09:59:08.80+02:21:24.10C-COSMOS3-6ACIS-INONE50
10:01:48.80+02:13:23.90C-COSMOS4-1ACIS-INONE50
10:01:16.80+02:13:23.90C-COSMOS4-2ACIS-INONE50
10:00:44.80+02:13:23.90C-COSMOS4-3ACIS-INONE50
10:00:12.80+02:13:23.90C-COSMOS4-4ACIS-INONE50
09:59:40.80+02:13:23.90C-COSMOS4-5ACIS-INONE50
09:59:08.80+02:13:23.90C-COSMOS4-6ACIS-INONE50
10:01:48.80+02:05:24.00C-COSMOS5-1ACIS-INONE50
10:01:16.80+02:05:24.00C-COSMOS5-2ACIS-INONE50
10:00:44.80+02:05:24.00C-COSMOS5-3ACIS-INONE50
10:00:12.80+02:05:24.00C-COSMOS5-4ACIS-INONE50
09:59:40.80+02:05:24.00C-COSMOS5-5ACIS-INONE50
09:59:08.80+02:05:24.00C-COSMOS5-6ACIS-INONE50
10:01:48.80+01:57:24.10C-COSMOS6-1ACIS-INONE50
10:01:16.80+01:57:24.10C-COSMOS6-2ACIS-INONE50
10:00:44.80+01:57:24.10C-COSMOS6-3ACIS-INONE50
10:00:12.80+01:57:24.10C-COSMOS6-4ACIS-INONE50
09:59:40.80+01:57:24.10C-COSMOS6-5ACIS-INONE50
09:59:08.80+01:57:24.10C-COSMOS6-6ACIS-INONE50
10:00:12.80+02:37:23.90C-COSMOS1-4ACIS-INONE50
10:00:44.80+02:29:24.00C-COSMOS2-3ACIS-INONE50
10:01:16.80+02:21:24.10C-COSMOS3-2ACIS-INONE50

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 08900745

Title: The Chandra Deep Proto-cluster Field: Black-Hole Growth and Feedback in Dense Environments

Type: LP Total Time: 400

PI Name: David Alexander

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.

R.A. Dec. Target Name Det. Grating Exp.Time
22:17:35.90+00:15:58.90SSA22 ProtoclusterACIS-INONE400

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 08900784

Title: The Duty Cycle of Supermassive Black Holes: X-raying Virgo

Type: LP Total Time: 453.599999999999

PI Name: Tommaso Treu

Nuclear accretion on to super-massive black holes (SMBHs) plays a key role in the evolution of their host galaxies, as inferred from the ubiquity of SMBHs and the correlations between BH mass, and host mass and velocity dispersion. A fundamental unadressed issue is the actual distribution of accretion rates; we propose snapshot observations of an unbiased sample of 84 early-type galaxies in the Virgo cluster. Together with joint Spitzer 24 um observations, and publicly available HST-ACS and UV data, this survey will probe low-level nuclear activity over four orders of magnitude in black hole mass, thereby delivering the first unbiased census of the duty cycle of local SMBHs.

R.A. Dec. Target Name Det. Grating Exp.Time
12:28:03.90+09:48:14.001062ACIS-SNONE5.4
12:52:17.50+11:18:50.002092ACIS-SNONE5.4
12:19:45.40+12:47:54.30369ACIS-SNONE5.4
12:24:55.50+11:42:15.00759ACIS-SNONE5.4
12:36:53.40+07:14:47.001692ACIS-SNONE5.4
12:27:40.50+13:04:44.201030ACIS-SNONE5.4
12:44:31.90+11:11:25.102000ACIS-SNONE5.4
12:36:24.80+10:23:04.601661ACIS-SNONE5.4
12:23:35.30+16:43:22.30654ACIS-SNONE5.4
12:42:47.40+11:26:33.001938ACIS-SNONE5.4
12:30:17.40+12:19:43.901279ACIS-SNONE5.4
12:37:30.60+09:33:18.801720ACIS-SNONE5.4
12:19:30.60+14:52:41.40355ACIS-SNONE5.4
12:35:30.60+12:13:15.401619ACIS-SNONE5.4
12:41:32.70+07:18:53.001883ACIS-SNONE5.4
12:29:53.50+14:04:07.001242ACIS-SNONE5.4
12:25:14.70+15:36:27.20784ACIS-SNONE5.4
12:34:06.10+11:19:17.001537ACIS-SNONE5.4
12:25:12.30+14:45:43.80778ACIS-SNONE5.4
12:25:41.70+12:48:38.00828ACIS-SNONE5.4
12:29:59.10+12:20:55.001250ACIS-SNONE5.4
12:35:38.00+12:15:50.501630ACIS-SNONE5.4
12:28:57.60+13:14:30.801146ACIS-SNONE5.4
12:27:36.70+08:09:14.801025ACIS-SNONE5.4
12:30:40.60+09:00:55.901303ACIS-SNONE5.4
12:42:10.70+07:40:37.001913ACIS-SNONE5.4
12:30:57.60+12:16:17.201327ACIS-SNONE5.4
12:28:43.40+11:45:21.001125ACIS-SNONE5.4
12:33:05.00+16:15:55.901475ACIS-SNONE5.4
12:30:18.40+13:34:40.901283ACIS-SNONE5.4
12:30:10.40+10:46:46.101261ACIS-SNONE5.4
12:24:05.00+11:13:06.00698ACIS-SNONE5.4
12:32:14.20+10:15:05.001422ACIS-SNONE5.4
12:47:15.30+10:12:13.002048ACIS-SNONE5.4
12:41:15.70+11:23:13.501871ACIS-SNONE5.4
12:09:22.30+13:59:33.109ACIS-SNONE5.4
12:22:43.30+08:11:53.70575ACIS-SNONE5.4
12:42:08.70+11:45:14.901910ACIS-SNONE5.4
12:27:54.90+08:05:25.201049ACIS-SNONE5.4
12:15:12.60+14:25:59.10140ACIS-SNONE5.4
12:31:20.00+14:06:53.501355ACIS-SNONE5.4
12:28:14.90+11:47:24.001087ACIS-SNONE5.4
12:40:58.50+11:11:04.401861ACIS-SNONE5.4
12:22:19.50+14:45:38.60543ACIS-SNONE5.4
12:32:23.40+11:15:46.201431ACIS-SNONE5.4
12:33:51.60+13:19:21.301528ACIS-SNONE5.4
12:36:54.90+12:31:12.501695ACIS-SNONE5.4
12:40:19.60+15:56:07.201833ACIS-SNONE5.4
12:20:48.80+17:29:13.40437ACIS-SNONE5.4
12:11:07.80+14:16:29.8033ACIS-SNONE5.4
12:16:33.70+13:01:53.10200ACIS-SNONE5.4
12:22:41.10+07:57:01.10571ACIS-SNONE5.4
12:10:23.20+10:11:17.6021ACIS-SNONE5.4
12:33:13.40+09:23:49.801488ACIS-SNONE5.4
12:39:04.70+14:43:51.501779ACIS-SNONE5.4
12:41:52.00+09:24:10.301895ACIS-SNONE5.4
12:33:19.80+12:51:12.801499ACIS-SNONE5.4
12:34:11.50+12:02:55.901545ACIS-SNONE5.4
12:29:30.20+07:59:34.001192ACIS-SNONE5.4
12:28:12.30+10:17:51.001075ACIS-SNONE5.4
12:42:58.00+10:40:54.501948ACIS-SNONE5.4
12:35:37.30+12:22:54.901627ACIS-SNONE5.4
12:32:33.40+15:24:55.201440ACIS-SNONE5.4
12:17:19.60+11:56:36.20230ACIS-SNONE5.4
12:47:20.70+12:09:58.702050ACIS-SNONE5.4
12:44:12.00+12:56:30.101993ACIS-SNONE5.4
12:24:48.30+18:11:42.00751ACIS-SNONE5.4
12:40:13.40+12:52:29.001828ACIS-SNONE5.4
12:22:14.80+07:10:00.80538ACIS-SNONE5.4
12:41:39.40+12:14:52.401886ACIS-SNONE5.4
12:29:35.00+08:03:31.401199ACIS-SNONE5.4
12:38:06.80+10:04:56.601743ACIS-SNONE5.4
12:34:06.80+12:44:30.101539ACIS-SNONE5.4
12:29:23.40+12:27:02.401185ACIS-SNONE5.4
12:40:11.20+09:53:45.901826ACIS-SNONE5.4
12:33:34.60+11:15:42.801512ACIS-SNONE5.4
12:33:13.80+10:55:43.601489ACIS-SNONE5.4
12:26:50.50+09:35:02.00944ACIS-SNONE5.4
12:30:52.20+16:45:32.601321ACIS-SNONE5.4
12:29:21.30+08:09:23.001178ACIS-SNONE5.4
12:25:57.80+10:03:12.80856ACIS-SNONE5.4
12:45:20.40+13:41:33.002019ACIS-SNONE5.4
12:40:53.10+10:28:34.001857ACIS-SNONE5.4
12:32:02.70+11:53:24.801407ACIS-SNONE5.4

Subject Category: WD BINARIES AND CV

Proposal Number: 09300101

Title: A Chandra Legacy Survey of Dynamically Active Globular Clusters

Type: LP Total Time: 305.4

PI Name: David Pooley

From our experience with Chandra, we have determined an empirical, successful, and model-independent method for determining the the neutron-star low-mass X-ray binary (LMXB) content and bright cataclysmic variable (CV) of a globular cluster (GC) in a reasonably short ACIS exposure. We propose a program that will discover ~30 LMXBs and ~150 CVs in 31 GCs. When combined with other observations, we will have direct knowledge of over 90% of the total LMXB population in GCs. We will accurately determine the role of GC dynamics in the formation of both LMXBs and CVs. We will also obtain an estimate for the density of the LMXBs and CVs in the field. This study will have important implications both for theories of LMXB and CV formation and for theories of GC dynamics and evolution.

R.A. Dec. Target Name Det. Grating Exp.Time
19:18:02.10+18:34:18.00Pal 10ACIS-SNONE11.2
18:31:23.20-32:20:53.00NGC 6637ACIS-SNONE7.3
17:37:36.10-03:14:45.00NGC 6402ACIS-SNONE12.2
17:38:36.60-23:54:34.00NGC 6401ACIS-SNONE11.2
18:04:49.80-07:35:09.00NGC 6539ACIS-SNONE14.6
18:30:56.10-25:29:51.00NGC 6638ACIS-SNONE9
16:59:32.60-37:07:17.00NGC 6256ACIS-SNONE9.4
17:14:32.10-29:27:44.00NGC 6304ACIS-SNONE5.3
15:28:00.50-50:40:22.00NGC 5927ACIS-SNONE7.7
17:19:11.80-18:30:59.00NGC 6333ACIS-SNONE8.4
18:31:54.10-23:28:31.00NGC 6642ACIS-SNONE7.6
18:06:08.60-27:45:55.00NGC 6540ACIS-SNONE5
18:09:17.60-25:54:31.00NGC 6553ACIS-SNONE5.5
18:43:12.70-32:17:31.00NGC 6681ACIS-SNONE7.2
17:17:59.20-23:45:57.00NGC 6325ACIS-SNONE17.9
21:33:29.30-00:49:23.00NGC 7089ACIS-SNONE11.5
18:04:49.60-30:03:21.00NGC 6528ACIS-SNONE12.3
17:10:10.20-26:34:55.00NGC 6293ACIS-SNONE10
18:03:34.10-30:02:02.00NGC 6522ACIS-SNONE8.4
13:46:26.50-51:22:24.00NGC 5286ACIS-SNONE13.1
16:27:40.40-38:50:56.00NGC 6139ACIS-SNONE17.8
18:01:50.60-08:57:32.00NGC 6517ACIS-SNONE26.1
05:14:06.30-40:02:50.00NGC 1851ACIS-SNONE19.6
17:50:12.90-37:03:05.00NGC 6441ACIS-SNONE35.9
18:13:38.80-31:49:37.00NGC 6569ACIS-SNONE11.2

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 09500471

Title: A Deep Chandra Observation of G54.1+0.3

Type: LP Total Time: 300

PI Name: Patrick Slane

Chandra observations of pulsar wind nebulae have revolutionized our understanding of these systems, revealing a wide variety of complex structures that all relate to the basic conversion of spin-down power to an axisymmetric wind with collimated outflows. Based on initial observations, G54.1+0.3 displays Doppler-brightened emission from the wind termination shock region, large-scale jets that form the elongated structure of the nebula, and faint emission that hints at a possible torus as well as large-scale filamentary structure. We propose a Chandra Large Project to obtain deep observations of G54.1+0.3 in order to resolve these structures, study their spectra, and derive properties related to flow conditions and the magnetic field structure of the nebula.

R.A. Dec. Target Name Det. Grating Exp.Time
19:30:30.20+18:52:14.20G54.1+0.3ACIS-SNONE300

Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS

Proposal Number: 09620513

Title: Galaxies across the Octaves: A Chandra Legacy Survey of SINGS Galaxies

Type: LP Total Time: 747.6

PI Name: Leigh Jenkins

We propose to complete a rich, X-ray unbiased, multiwavelength Legacy dataset for a sample of 40 nearby galaxies. These galaxies are a distance limited (d < 10 Mpc) sample from the Spitzer Infrared Nearby Galaxy Survey (SINGS) Legacy program. The sample is now 45% complete. Our observations will detect X-ray binaries as faint as 3e36-1e37 erg/s, allowing us to constrain the X-ray binary/SFR correlation over a large range of galaxy properties and build X-ray binary Luminosity Functions for galaxies across a range of star formation histories. We will produce Legacy datasets and source catalogs for the community, and run theoretical binary population synthesis models in support of this effort.

R.A. Dec. Target Name Det. Grating Exp.Time
09:26:11.50-76:37:35.00NGC 2915ACIS-SNONE15.6
08:23:56.00+71:01:45.50M81 DwAACIS-SNONE26.3
10:05:30.60+70:21:52.00M81 DwBACIS-SNONE26.3
13:06:24.90+67:42:25.00DDO 165ACIS-SNONE26.3
08:34:07.30+66:10:54.60DDO 53ACIS-SNONE26.3
09:40:32.30+71:10:56.00Holmberg IACIS-SNONE26.3
09:57:32.00+69:02:45.00Holmberg IXACIS-SNONE26.3
10:28:21.50+68:24:41.00IC 2574ACIS-INONE11.2
09:47:15.50+67:55:03.10NGC 2976ACIS-SNONE10
12:16:41.80+69:28:09.70NGC 4236ACIS-INONE11.2
12:54:05.50+27:08:55.30DDO 154ACIS-SNONE62.6
12:56:43.90+21:41:00.10NGC 4826ACIS-INONE28.7
14:05:01.50+53:39:44.60NGC 5474ACIS-SNONE30.7
00:09:56.50-24:57:48.00NGC 24ACIS-SNONE43.3
11:20:15.10+12:59:21.60NGC 3627ACIS-SNONE51
12:41:52.80+41:16:25.90NGC 4625ACIS-SNONE58.1
02:14:03.70+27:52:36.70NGC 855ACIS-SNONE59.3
10:19:54.80+45:33:00.50NGC 3198ACIS-SNONE61.8
11:05:48.90-00:02:05.90NGC 3521ACIS-INONE74.1
12:50:52.60+41:07:09.30NGC 4736ACIS-INONE25.7
18:28:38.20-66:58:54.00IC 4710ACIS-SNONE46.5

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 09800310

Title: Probing Dark Energy with Relaxed Galaxy Clusters

Type: LP Total Time: 465

PI Name: Steven Allen

We seek to constrain dark energy using studies of the apparent evolution of the X-ray gas mass fraction in the most X-ray luminous, dynamically relaxed galaxy clusters. The proposed observations will improve the detection of the effects of dark energy from the X-ray data alone to > 5 sigma. More importantly, they will allow us to measure the level of intrinsic (systematic) scatter in distance measurements from this technique and establish whether this is smaller than from type Ia supernovae measurements. Used in combination with supernovae and CMB data, the new Chandra observations will allow the most precise search to date for evolution in the dark energy equation of state - our best approach in trying to understand the origin of cosmic acceleration.

R.A. Dec. Target Name Det. Grating Exp.Time
04:39:02.30+05:20:43.60RXJ0439-0520ACIS-INONE30
21:29:39.90+00:05:20.00RXJ2129+0005ACIS-INONE30
10:23:39.40+04:11:14.30Zwicky 3146ACIS-INONE40
23:08:22.10-02:11:29.10Abell 2537ACIS-INONE40
14:27:39.40-25:21:02.00MACS1427-25ACIS-INONE30
22:29:45.30-27:55:36.90MACS2229ACIS-INONE15
11:15:52.10+01:29:52.90MACS1115ACIS-INONE40
01:59:49.30+08:49:59.20MACS0159ACIS-INONE20
20:46:00.60-34:30:17.00MACS2046ACIS-INONE40
13:59:10.30-19:29:24.40MACS1359ACIS-INONE50
16:21:24.80+38:10:09.00MACS1621ACIS-INONE60
14:27:16.20+44:07:31.00MACS1427+44ACIS-INONE40
13:11:01.60-03:10:40.00MACS1311ACIS-INONE30

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 09800847

Title: BOW SHOCK, ELECTRON-ION EQUILIBRIUM, BREAKUP OF COOL CORE, AND DARK SUBCLUSTER IN ABELL 520

Type: LP Total Time: 460

PI Name: Maxim Markevitch

Shock fronts provide a unique tool to study the cluster plasma. Only two have been found, those in 1E0657 and A520. Using a long observation of 1E0657, we have determined, for the first time in any astrophysical plasma, that electron-proton equilibration time is shorter than Coulomb - a tantalizing result but based on one object. A520 gives the only chance to confirm it. Its shock also coincides with an edge of the radio halo, enabling tests of the origin of the intracluster relativistic electrons. A520 also exhibits a remnant of a cool core broken up by merger-induced instabilities, providing data on plasma viscosity. Finally, weak lensing map of A520 reveals an intriguing dark subcluster almost devoid of galaxies. We propose a long observation of this exceptionally interesting cluster.

R.A. Dec. Target Name Det. Grating Exp.Time
04:54:05.40+02:53:35.00A520_OFF1ACIS-INONE115
04:54:05.40+02:53:35.00A520_OFF3ACIS-INONE115
04:54:05.40+02:53:35.00A520_OFF4ACIS-INONE115
04:54:05.40+02:53:35.00A520_OFF2ACIS-INONE115

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 09900660

Title: The Evolution of Faint AGN at High Redshift

Type: VLP Total Time: 1800

PI Name: Kirpal Nandra

We propose a very deep (total 800ks/field) Chandra survey of 0.25 deg2 covering 3 contiguous fields in the Extended Groth Strip, which have exceptional multiwaveband coverage obtained by the AEGIS project. These data, in combination with the CDF North and South, will provide a definitive measurement of the evolution of faint, X-ray selected AGN from z=3-4, where the optical number counts start to drop dramatically. In combination with ultradeep Spitzer data in the same region, this survey will also provide a crucial step forward towards a more complete census of AGN activity and the importance of Compton thick AGN at high z, with associated implications for the total accretion budget of the universe.

R.A. Dec. Target Name Det. Grating Exp.Time
14:20:15.50+53:00:09.70AEGIS-1ACIS-INONE600
14:19:12.00+52:48:38.20AEGIS-2ACIS-INONE600
14:18:09.00+52:37:04.40AEGIS-3ACIS-INONE600

Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 09910161

Title: The Great Nebula in Carina: Protoplanetary Disks to Starburst Galaxies

Type: VLP Total Time: 1080

PI Name: Leisa Townsley

The Great Nebula in Carina is a superb site to study the violent massive star formation and feedback that typifies giant HII regions and starburst galaxies. We propose to map the Carina star-forming complex with a mosaic of 20 new 60-ks ACIS-I pointings as a testbed for understanding recent and ongoing star formation and to probe its regions of bright diffuse X-ray emission. We will provide a catalog of multiwavelength properties of ~12,000 X-ray-selected stars. We will explore superbubble confinement, shocks, cloud evaporation, mass-loading of winds, ISM enrichment, and HII region energetics. We will also examine Carina as a surrogate environment for our Solar System's formation, where protoplanetary disks are bathed in harsh winds and radiation from nearby massive stars.

R.A. Dec. Target Name Det. Grating Exp.Time
10:45:53.70-59:57:03.90Carina Clusters Ptg 3ACIS-INONE60
10:44:43.90-59:21:24.90Carina Clusters Ptg 4ACIS-INONE60
10:47:12.50-60:05:50.00Carina Clusters Ptg 5ACIS-INONE60
10:46:06.70-59:31:08.90Carina Clusters Ptg 6ACIS-INONE60
10:43:19.70-59:09:11.30Carina Clusters Ptg 7ACIS-INONE60
10:46:59.70-59:46:06.10Carina East Ptg 1ACIS-INONE60
10:48:12.40-59:32:31.00Carina East Ptg 2ACIS-INONE60
10:48:26.00-59:58:22.60Carina East Ptg 3ACIS-INONE60
10:49:09.40-59:45:24.10Carina East Ptg 4ACIS-INONE60
10:45:15.10-60:12:04.50Carina South Pillars Ptg 1ACIS-INONE60
10:43:09.70-60:14:38.90Carina South Pillars Ptg 2ACIS-INONE60
10:46:55.00-60:22:01.70Carina South Pillars Ptg 4ACIS-INONE60
10:44:46.40-60:25:40.50Carina South Pillars Ptg 5ACIS-INONE60
10:41:31.80-59:35:34.80Carina Superbubble Ptg 1ACIS-INONE60
10:40:34.20-59:49:30.70Carina Superbubble Ptg 2ACIS-INONE60
10:41:52.10-60:01:43.70Carina Superbubble Ptg 3ACIS-INONE60
10:42:34.10-59:22:44.90Carina Superbubble Ptg 4ACIS-INONE60
10:48:47.50-60:14:27.70Carina South Pillars Ptg 3ACIS-INONE60

Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 09910246

Title: THE ORIGIN OF THE GALACTIC RIDGE X-RAY EMISSION

Type: LP Total Time: 900

PI Name: Mikhail Revnivtsev

We propose a very deep (900 ksec) observation of a carefully selected patch of the Galaxy. This observation will provide the most direct and unambiguous answer to the 30-year-old puzzle of the nature of the Galactic "diffuse" X-ray emission. Recent studies comparing the luminosity function of X-ray sources in the Solar neighborhood with the number-flux distributions toward the Galactic Center and plane strongly suggest that the GRXE can be explained by the integrated emission of millions of faint stellar sources - CVs and coronally active stars. The surface density of them is expected to exceed 1 per 60sq.sec in the proposed observation, in sharp contrast to the expectation in the diffuse model. Clearly, Chandra is the only mission in the foreseeable future which can solve this problem.

R.A. Dec. Target Name Det. Grating Exp.Time
17:51:27.30-29:35:05.101.5deg_windowACIS-INONE900

Subject Category: STARS AND WD

Proposal Number: 10200509

Title: Testing the Colliding Wind Paradigm: X-rays from the Wolf-Rayet Binary System WR 147

Type: LP Total Time: 300

PI Name: Svetozar ZHEKOV

We propose a deep HETG exposure of the Wolf-Rayet binary system WR 147. The excellent gratings and zero-order data will be used to put tight constraints on the validity of the colliding stellar wind (CSW) mechanism assumed responsible for the X-rays from this object. The detection of broad emission lines with profiles and centroids in agreement with synthetic colliding wind spectra, along with confirmation of the spatially extended X-ray emission reported from the previous short HRC-I exposure, would support the colliding wind picture. On the other hand, narrow (or unresolved) unshifted emission lines would require an interpretation other than CSW. Thus, this study will be the most rigorous test of the CSW paradigm in a WN+OB binary so far.

R.A. Dec. Target Name Det. Grating Exp.Time
20:36:43.70+40:21:07.30WR 147ACIS-SHETG300

Subject Category: BH AND NS BINARIES

Proposal Number: 10400827

Title: The cooling neutron star in the super-Eddington accretor XTE J1701-462

Type: LP Total Time: 323

PI Name: Jeroen Homan

Observing the cooling of neutron stars that are reheated by accretion provides new insights into neutron star structure. A detailed and efficient study of this cooling requires the use of Chandra. Here we propose to continue our ongoing monitoring campaign of the neutron star binary XTE J1701-462, a unique system that accreted at super- and near Eddington luminosities for more than 1.5 years before recently returning to quiescence. Our goal is to study the cooling of the surprisingly hot neutron star and also the evolution of the enigmatic non-thermal spectral component in unprecedented detail. Our ongoing strategy of frequent observations (every ~2.5 months) is necessary to test the most recent cooling models. We therefore request five ACIS-S observations for a total of 323 ks.

R.A. Dec. Target Name Det. Grating Exp.Time
17:00:58.50-46:11:08.60XTE J1701-462ACIS-SNONE38
17:00:58.50-46:11:08.60XTE J1701-462ACIS-SNONE49
17:00:58.50-46:11:08.60XTE J1701-462ACIS-SNONE62
17:00:58.50-46:11:08.60XTE J1701-462ACIS-SNONE76
17:00:58.50-46:11:08.60XTE J1701-462ACIS-SNONE98

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 10500327

Title: An Extensive Study of the Youngest Galactic Supernova Remnant G1.9+0.3

Type: LP Total Time: 250

PI Name: Stephen Reynolds

We have recently discovered that the smallest Galactic supernova remnant (SNR) in angular size, G1.9+0.3, is the youngest (known) Galactic SNR, with an age of about 100 years. The X-ray spectrum is lineless, well described by synchrotron emission with the highest rolloff frequency ever reported for a SNR. We propose a 500 ks Large Project observation of this unique object, which fills in a gap between SN 1987A (21 yr old) and Cas A (about 330). We wish to study detailed morphology, to compare with the 3 other Galactic synchrotron- dominated SNRs; spectra, to search for spatial variations and thermal emission; and variability, using this study for the first epoch. This object has enormous potential for the study of SNR hydrodynamics and strong-shock physics.

R.A. Dec. Target Name Det. Grating Exp.Time
17:48:45.00-27:10:00.00G1.9+0.3ACIS-SNONE250

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 10500437

Title: The Spin and Magnetic Moment of the Neutron Star in Cassiopeia A

Type: LP Total Time: 366

PI Name: Deepto Chakrabarty

How do the spin and magnetic moment of a neutron star relate to the properties of its massive progenitor and the supernova explosion? The best opportunity to study this question is the Cas A point source, the youngest known (300 yr) Galactic compact object. Its spectrum is unlike the classical Crab pulsar's, but is instead similar to both the more strongly magnetic "magnetars" and more weakly magnetic young pulsars. Much has been inferred about its progenitor and the supernova explosion from detailed studies of the supernova remnant. We propose to obtain a 500 ks HRC-S observation of the Cas A central point source, combining 350 ks of GO time and 150 ks of GTO time, in order to search for coherent pulsations down to the practical sensitivity limit of any current X-ray mission.

R.A. Dec. Target Name Det. Grating Exp.Time
23:23:27.90+58:48:42.50Cas A CCOHRC-SNONE350

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 10500687

Title: A Deep Cycle 10 Chandra Observation of the Tycho Supernova Remnant

Type: LP Total Time: 750

PI Name: John Hughes

We propose to obtain a very deep observation of the Tycho supernova remnant. Our observational goals include investigating the nature and origin of Fe-rich ejecta knots, and studying the spatial, spectral and temporal evolution of the nonthermal emission from the forward shock. Tycho is the ideal remnant for studies of cosmic-ray modified dynamics and for investigating key features of Type Ia supernova physics.

R.A. Dec. Target Name Det. Grating Exp.Time
00:25:19.00+64:08:10.00Tycho's SNRACIS-INONE750

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 10500817

Title: The Unique Dynamical Vela Pulsar Wind Nebula

Type: LP Total Time: 440

PI Name: George Pavlov

Chandra observations of the Vela pulsar-wind nebula (PWN) have revealed intriguing features in its structure and shown that the PWN brightness, shape, and spectrum change on a timescale as short as one week. Taking advantage of the known variability timescale, we propose a series of optimally sequenced observations to understand the PWN topology, dynamics, spectral structure, and interaction with the ambient matter.

R.A. Dec. Target Name Det. Grating Exp.Time
08:35:20.70-45:10:35.70Vela PWNACIS-SNONE320

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 10500824

Title: A Deep HETG Probe of the CSM Interaction in SN1996cr

Type: LP Total Time: 500

PI Name: Franz Bauer

SN1996cr is one of the closest and X-ray brightest SNe detected on the sky. Like SN1987A, it appears to have exploded into a wind-blown bubble, sparking a unique temporal evolution wherein its X-ray flux has increased for >8 years now. Serendipitous HETG data allow us to identify several strong, broad, asymmetric emission-line complexes in SN1996cr, although their low-signal leaves much to interpretation. We propose a deep HETG observation of SN1996cr to resolve these emission lines and elucidate their nature (velocity structure, line diagnostics, abundances). It is imperative to observe SN1996cr while it remains bright, as it is the only SN beside SN1987A where such an observation is practical and in many ways is more representative of CSM-interacting core-collapse SNe.

R.A. Dec. Target Name Det. Grating Exp.Time
14:13:10.00-65:20:44.50SN1996crACIS-SHETG500

Subject Category: NORMAL GALAXIES: DIFFUSE EMISSION

Proposal Number: 10610785

Title: Wide, deep and sharp: A comprehensive observation of M82, the exemplar of starburst activity

Type: LP Total Time: 480

PI Name: David Strickland

We propose to observe M82, the exemplar of starburst and superwind activity, with a mosaic of deep ACIS-S observations that will cover the starburst region, the galactic disk and much of the extended superwind. The region of highest resolution (FWHM < 1.5'') will cover the same field of view as recent deep HST and Spitzer observations. It will be the most data-rich X-ray study of a starburst galaxy ever (>1E6 counts), and will greatly advance our knowledge of the soft X-ray-emitting gas in the superwind, the very hot metal-enriched plasma within the starburst region, and the the X-ray point source population in both the starburst region and the galactic disk. It will further complement the investment made in observing M82 by the other Great Observatories, Hubble and Spitzer.

R.A. Dec. Target Name Det. Grating Exp.Time
09:55:51.30+69:42:51.60M82-NEACIS-SNONE120
09:55:37.60+69:42:25.10M82-NWACIS-SNONE120
09:55:54.20+69:38:57.70M82-SWACIS-SNONE120
09:56:07.80+69:39:34.10M82-SEACIS-SNONE120

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 10700504

Title: The multi-faceted X-ray activity of low-redshift active galaxies

Type: LP Total Time: 420

PI Name: Mark Birkinshaw

We propose ACIS-I observations of Chandra-unobserved low-redshift 3CRR active galaxies and their environments. The data will complete Chandra observations of 3CRR at z < 0.1, making the sample useful for statistical studies. Only Chandra can resolve the multiple components of these sources, as is needed for an improved understanding of source physics and gas heating. The imaging and spectroscopy of cores, jets, hot spots, and atmospheres will be of permanent legacy value. We will use the data to investigate particle acceleration, interactions between radio plasma and the ISM and IGM, the emission mechanisms of hot spots, and AGN fueling. Comparison with our complete Spitzer coverage and HST images will aid interpretation. The dataset will be made public immediately.

R.A. Dec. Target Name Det. Grating Exp.Time
18:38:26.30+17:11:49.703C 386ACIS-INONE30
22:49:54.70+11:36:30.10NGC 7385ACIS-INONE40
03:58:54.40+10:26:03.003C 98ACIS-INONE30
07:47:57.90+55:45:46.30DA 240 WACIS-INONE25
07:49:15.90+55:52:10.30DA 240 EACIS-INONE25
09:49:46.00+73:14:23.104C 73.08ACIS-INONE30
01:12:02.20+49:28:35.003C 35ACIS-INONE25
12:29:52.30+11:40:38.901227+119ACIS-INONE30
15:52:09.20+20:05:23.703C 326ACIS-INONE50
15:51:43.20+20:04:17.703C 326 WACIS-INONE35
10:05:24.20+34:59:11.403C 236 WACIS-INONE30
10:06:18.40+34:51:56.403C 236 CACIS-INONE40
10:07:12.60+34:44:41.403C 236 EACIS-INONE30

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 10700584

Title: Deconstructing AGN X-ray Spectra - Time for a Paradigm Shift?

Type: LP Total Time: 320

PI Name: Tracey Turner

We aim to detect and measure the ionization state and outflow velocities in the well-studied low-BH-mass AGN NGC 4051. We have been granted a 340 ks Suzaku observation to study continuum and low-resolution line spectral variability; HETG spectroscopy complements this by isolating narrow absorption lines arising from key zones of gas, allowing us to measure ionization, column and outflow velocities of the multiple ionized zones. A moderately ionized zone in particular can mimic the appearance of a broad Fe emission line but can be revealed by 6.5 keV Fe Kalpha absorption, for which there is already tentative evidence. A 320 ks HETG exposure will provide powerful diagnostic signatures across a wide range of ionisation. We also request HST time for tie-in UV spectroscopy.

R.A. Dec. Target Name Det. Grating Exp.Time
12:03:09.60+44:31:52.80NGC 4051ACIS-SHETG320

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 10800641

Title: A Deep Image of the Most Powerful Cluster AGN Outburst

Type: LP Total Time: 500

PI Name: Brian McNamara

Powerful AGN outbursts in galaxy clusters can release upward of 1E61 erg into the intracluster medium. Events of this magnitude are able to quench cooling flows and drive large-scale outflows that redistribute and heat the gas on cluster-wide scales. The most potent example of this is seen in the z=0.22 cluster MS0735.6+7421, whose powerful shock and cavity system have injected an estimated 6E61 erg of energy into the ICM. We propose to obtain a 500 ksec ACIS image of the cluster to examine in detail the relationships between the shock, cavity, and radio systems, and to investigate the impact of powerful AGN outbursts on the structure of the cluster.

R.A. Dec. Target Name Det. Grating Exp.Time
07:41:44.00+74:14:38.30MS0735.6+7421ACIS-SNONE500

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 10800762

Title: The Role of AGN in Massive Galaxy Formation

Type: LP Total Time: 309

PI Name: Spencer Stanford

There is increasing evidence that high rates of star formation in massive galaxies was common in rich environments at z > 1. The leading candidate for quenching the star formation and transforming cluster galaxies into red sequence galaxies is AGN. Therefore we expect to see an increase in AGN incidence in dense environments at z > 1. We propose to systematically determine the incidence of AGN in galaxy clusters at 1 < z < 1.5 using moderately deep ACIS imaging of IR-selected clusters in the Bootes field. In conjunction with extensive data from Spitzer, HST, and Keck, we will test the AGN quenching paradigm for the origin of the stars in massive galaxies.

R.A. Dec. Target Name Det. Grating Exp.Time
14:29:14.30+33:57:20.70ISCS1051ACIS-INONE24
14:26:09.50+34:03:41.10ISCS1034ACIS-INONE12
14:32:29.20+33:32:48.30ISCS1017ACIS-INONE33
14:26:30.40+33:39:33.20ISCS1014ACIS-INONE35
14:29:18.50+34:37:25.80ISCS1030ACIS-INONE32
14:34:30.40+34:27:12.30ISCS1034ACIS-INONE35
14:32:38.40+34:36:49.00ISCS1029ACIS-INONE32
14:32:24.20+32:50:03.70ISCS1036+1088ACIS-INONE36
14:25:19.30+34:28:38.20ISCS0890ACIS-INONE36
14:34:46.30+35:19:45.80ISCS1025ACIS-INONE34

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 10800779

Title: Shocks, Ripples, and Bubbles: A Very Deep Observation of Abell 2052

Type: LP Total Time: 500

PI Name: Elizabeth Blanton

The cooling flow cluster A2052 has, arguably, the morphology most similar to the Perseus cluster as seen with Chandra. Two clear bubbles to the N and S of the center of A2052 are filled with the radio lobes associated with 3C 317. Surface brightness discontinuities consistent with shocks with Mach numbers of 1.8 and 1.2 are seen near the cluster center. These may be isothermal shocks. We propose to observe Abell 2052 much more deeply to study these shock features, ripple features due to sound waves that may be found at larger radii, possible ghost bubbles, cooling gas in the bright shells around the radio source that may link the X-ray and H-alpha emission, and possible hot gas within the X-ray holes. We will directly compare the star formation and cooling rates in the cluster center.

R.A. Dec. Target Name Det. Grating Exp.Time
15:16:44.50+07:01:16.60Abell 2052ACIS-SNONE500

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 10900836

Title: A Benchmark Observation of the Warm-Hot Intergalactic Medium

Type: LP Total Time: 500

PI Name: Taotao Fang

Searching for the Missing baryons'', in the form of the warm-hot intergalactic medium (WHIM), is a fundamental challenge faced by the current theory of structure formation. Cosmological simulations predict that majority of the WHIM can be probed in X-ray only, yet the reported detections are often in question due to statistical and systematical issues. Based on the tentative evidence in our joint XMM-Chandra ToO observations of H 2356-309, we propose a deep, non-ToO Chandra observation to definitively detect the WHIM absorption line with a measured column density expected from theory. A null detection would place an upper limit which cannot be explained by current cosmological simulations, and put future pursuit of the WHIM with current generation of X-ray telescopes in question.

R.A. Dec. Target Name Det. Grating Exp.Time
23:59:07.90-30:37:41.00H 2356-309HRC-SLETG500

Subject Category: STARS AND WD

Proposal Number: 11200169

Title: Cosmic archaeology with Chandra: from a supergiant shell to young stellar objects in NGC 602

Type: LP Total Time: 300

PI Name: Lidia Oskinova

The Wing of the SMC has low metalicity, and low content of gas and dust. It provides an ideal nearby laboratory to study star formation and feedback in an environment that resembles the early Universe. We propose a 300 ks Chandra observation of NGC602, a massive star cluster at the edge of a supergiant shell in the Wing. This cluster has a simple morphology and is located in a region of high transparency for X-rays. The Chandra data will help to answer the fundamental questions about the mechanisms that sculpture the largest structures in the ISM, and trigger the formation of stars. This observation will be complemented with data from other NASA Great Observatories HST and Spitzer, and will establish a template for studies of active star formation in external galaxies.

R.A. Dec. Target Name Det. Grating Exp.Time
01:29:38.60-73:34:25.10NGC 602ACIS-INONE300

Subject Category: STARS AND WD

Proposal Number: 11200420

Title: New Thrust for Jets: Understanding the Physics of Young Stellar Jets and Outflows

Type: LP Total Time: 360

PI Name: Manuel Guedel

We propose a deep ACIS observation of the jet system of the classical T Tauri star DG Tau. DG Tau is so far unique because both its jet and counter-jet have been detected in X-rays. We will study jet structure, temperatures and proper motions of the sources and model the heating, propagation, and cooling physics of the hot plasma jets. The system orientation allows the counter-jet to be viewed through the circumstellar disk. X-ray absorption by the disk gas can thus be reliably determined and be used, together with optical information, to determine the gas-to-dust ratio in the disk. We will request radio (VLA) observations for complementary imaging, and near-IR (VLT) observing time for high-resolution spectroscopy to characterize the jet shocks and measure extinction along the jets.

R.A. Dec. Target Name Det. Grating Exp.Time
04:27:04.70+26:06:16.20DG TauACIS-SNONE360

Subject Category: STARS AND WD

Proposal Number: 11200698

Title: The Chandra Cygnus OB2 Survey

Type: VLP Total Time: 1080

PI Name: Jeremy Drake

Understanding massive "starburst" clusters is crucial for the first stars, starburst galaxies, galactic and ISM evolution, and star and planet formation on universal and galactic scales. But Galactic superclusters are generally too distant for detailed study. Recent awareness that Cygnus OB2 (1.5kpc; ~2Myr old) has supercluster characteristics has sparked a multiwavelength legacy effort exploiting its proximity to study starburst astrophysics. This Chandra Legacy project will provide an exquisite vision of the anatomy of a massive "collapse" mode of star formation, allowing detailed archeology of its history and content. 8000-10000 detections down to 0.1Msun will incisively test theories of giant molecular cloud collapse, massive star formation and protoplanetary disk evolution.

R.A. Dec. Target Name Det. Grating Exp.Time
20:33:12.00+41:19:00.00Cygnus OB2ACIS-INONE1080

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 11500272

Title: A Detailed Study of the Aged O-Rich Supernova Remnant 0049-73.6

Type: LP Total Time: 450

PI Name: Sangwook Park

O-rich supernova remnants (SNRs) provide an excellent opportunity for the study of core-collapse (CC) nucleosynthesis and the late-stage evolution of a massive star. While young O-rich SNRs (e.g., Cas A and G292.0+1.8) are being extensively studied, such studies are intrinsically limited because the early-stage of the blast wave and reverse shock may not reveal the full nature of metal-rich ejecta and the surroundings. Studies of relatively old O-rich SNRs are essential for a comprehensive understanding of CC SNRs, complementing those of young SNRs. The old O-rich SNR 0049-73.6 is a perfect example for such a study, revealing both high- and low-Z ejecta and well-evolved blast wave. Thus, we propose a deep 450 ks ACIS observation of 0049-73.6 for a detailed X-ray imaging spectroscopy.

R.A. Dec. Target Name Det. Grating Exp.Time
00:51:07.00-73:21:30.00SNR 0049-73.6ACIS-SNONE450

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 11500276

Title: A Detailed Study of the Type Ia Supernova Remnant G299.2-2.9

Type: LP Total Time: 640

PI Name: Sangwook Park

Supernova remnant (SNR) G299.2-2.9 is a unique example of the Type Ia SNR which allows us a detailed 2-D spectral study for both of the metal-rich ejecta and ambient structures. Such studies of the ejecta and ambient medium are essential to reveal the detailed SNe Ia explosion mechanisms and their specific environments, which would critically impact their utility in cosmology. The proposed studies of both of the Type Ia SN ejecta and ambient structures cannot be performed with young historical Type Ia SNRs, and the mid-aged Type Ia SNR G299.2-2.9 provides a unique opportunity. Thus, we propose a 640 ks Chandra observation of G299.2-2.9. The proposed observation will serve a legacy which will be an essential basis for a high resolution spectroscopy of Type Ia SNRs with IXO and Astro-H.

R.A. Dec. Target Name Det. Grating Exp.Time
12:14:50.00-65:28:25.00G299.2-2.9ACIS-INONE640

Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS

Proposal Number: 11620601

Title: Ultra-Luminous x-Ray Sources in the Most Metal-Poor Galaxies

Type: LP Total Time: 192.127

PI Name: Andrea Prestwich

There is growing observational and theoretical evidence to suggest that Ultra-Luminous X-ray sources (ULX) form preferentially in low metallicity environments. Here we propose a survey of 27 nearby (< 30Mpc) star-forming Extremely Metal Poor Galaxies (Z<5% solar). There are almost no X-ray observations of such low abundance galaxies (3 in the Chandra archive). These are the most metal-deficient galaxies known, and a logical place to find ULX if they favor metal-poor systems. We plan to test recent population synthesis models which predict that ULX should be very numerous in metal-poor galaxies. We will also test the hypothesis that ULX form in massive young star clusters, and ask for HST time to obtain the necessay imaging data.

R.A. Dec. Target Name Det. Grating Exp.Time
01:13:39.40+00:52:27.80UGC 772ACIS-SNONE5
21:04:55.30-00:35:22.00SDSS J210455.31-003522.2ACIS-SNONE5
11:32:02.50+57:22:45.70SBS 1129+576ACIS-SNONE15.03
08:25:55.50+35:32:32.00HS 0822+3542ACIS-SNONE5
11:05:53.70+60:22:28.70SBS 1102+606ACIS-SNONE10.261
12:01:22.30+02:11:08.30SDSS J120122.32+021108.5ACIS-SNONE8.072
11:19:34.40+51:30:12.10[RC2] A1116+51ACIS-SNONE10.901
09:44:16.60+54:11:34.30SBS 0940+544ACIS-SNONE16.93
10:16:24.50+37:54:46.00KUG 1013+381ACIS-SNONE9.411
12:30:48.50+12:02:42.10[RC2] A1228+12ACIS-SNONE12.124
14:17:01.40+43:30:05.50SBS 1415+437ACIS-SNONE5
04:05:20.40-36:49:00.706dF J0405204-364859ACIS-SNONE5
14:14:54.20-02:08:22.90SDSS J141454.13-020822.9ACIS-SNONE16.75
22:30:36.80-00:06:37.00SDSS J223036.79-000636.9ACIS-SNONE7.657
12:38:40.10+32:46:00.50UGCA 292ACIS-SNONE5
14:44:12.80+42:37:44.00HS 1442+4250ACIS-SNONE5
02:04:25.60-10:09:35.00KUG 0201-103ACIS-SNONE13.596
08:12:39.50+48:36:45.40SDSS J081239.52+483645.3ACIS-SNONE5
08:59:46.90+39:23:05.60SDSS J085946.92+392305.6ACIS-SNONE5
07:47:32.10+51:11:28.20KUG 0743+513ACIS-SNONE5
09:40:12.80+29:35:30.30KUG 0937+298ACIS-SNONE5
09:46:22.80+54:52:08.30KUG 0942+551ACIS-SNONE16.395

Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS

Proposal Number: 11620915

Title: Accretion onto nuclear black holes in early type galaxies: comparing field vs. clusters

Type: LP Total Time: 479.2

PI Name: Elena Gallo

IF black holes are indeed ubiquitous in galactic nuclei, little is known about the frequency and intensity of their activity, the more so at the low-mass/low-luminosity end. Our cycle 8 observations of the Virgo clusters have delivered the most comprehensive measurement of the duty cycle, showing that although black holes are present even in low mass spheroids, activity is a strong function of mass. However, nuclear activity is also expected to be a strong function of environment, which regulates the gas supply through processes such as ram pressure stripping and merging. We propose the first systematic study of the effects of the environment on low level accretion, by combining our Virgo study with new observations and archival data of a volume limited sample of 100 field spheroids.

R.A. Dec. Target Name Det. Grating Exp.Time
14:21:03.60+03:16:15.71NGC5576ACIS-SNONE8.5
14:29:40.56+03:14:00.67NGC5638ACIS-SNONE10.2
15:04:06.96+01:13:11.68NGC5831ACIS-SNONE10.3
12:51:48.00-10:27:17.21NGC4742ACIS-SNONE5.3
13:30:42.96-22:25:15.92ESO576-076ACIS-SNONE8.8
12:51:06.72+10:54:43.49NGC4733ACIS-SNONE3.5
12:42:56.40+03:40:35.54PGC042748ACIS-SNONE3.5
13:21:19.44-13:02:31.56NGC5099ACIS-SNONE5.7
12:37:48.24-01:20:41.35PGC042173ACIS-SNONE8.2
15:03:50.40+01:07:36.62PGC1185375ACIS-SNONE9.2
12:42:50.88+12:18:31.50PGC042737ACIS-SNONE11
12:43:51.12+11:28:01.31PGC042846ACIS-SNONE3.5
15:00:33.12+02:13:49.30SDSSJ150033.02+021349.1ACIS-SNONE6.3
14:58:28.56+01:32:34.91SDSSJ145828.64+013234.6ACIS-SNONE8.4
12:45:15.36+07:36:56.45PGC042982ACIS-SNONE6.4
15:01:00.96+01:00:49.68SDSSJ150100.85+010049.8ACIS-SNONE11.4
12:54:05.28-00:06:04.54PGC135814ACIS-SNONE4.5
15:02:33.12+01:56:08.95SDSSJ150233.03+015608.3ACIS-SNONE10.1
15:04:24.00+00:55:06.20PGC1179083ACIS-SNONE10.2
12:42:45.36+03:25:50.12PGC042724ACIS-SNONE1.7
15:01:16.08+01:46:24.49PGC1205406ACIS-SNONE8.5
13:31:33.84+02:11:17.16PGC135829ACIS-SNONE6.7
13:03:44.16+02:02:23.86PGC135818ACIS-SNONE3.5
12:41:45.12+04:00:23.62PGC042596ACIS-SNONE2.5
14:59:44.88+02:07:51.82SDSSJ145944.77+020752.1ACIS-SNONE8
14:58:41.04+02:20:23.50PGC1223766ACIS-SNONE9.5
12:50:07.44+02:14:52.87PGC043421ACIS-SNONE4.2
15:02:28.32+01:21:51.19PGC1192611ACIS-SNONE8.6
12:40:25.92+04:03:01.01PGC042454ACIS-SNONE2.4
22:32:13.44-41:10:09.52PGC085239ACIS-SNONE6.8
20:27:34.08-55:05:23.82PGC064718ACIS-SNONE2
02:08:21.12+10:59:47.04NGC0821ACIS-SNONE10.4
23:12:07.44-28:32:26.20NGC7507ACIS-SNONE7.3
03:28:19.63-31:04:05.09NGC1340ACIS-SNONE3.2
03:44:49.99-21:55:15.60NGC1439ACIS-SNONE7.5
03:42:49.10-22:06:30.10NGC1426ACIS-SNONE5.4
03:01:36.05-14:50:11.80NGC1172ACIS-SNONE6.5
01:47:55.30-26:53:31.88IC1729ACIS-SNONE6
03:35:14.62-20:22:25.28NGC1370ACIS-SNONE2.6
02:26:28.30+01:09:37.73IC0225ACIS-SNONE7.4
00:41:11.76-21:07:53.11ESO540-014ACIS-SNONE7.9
23:37:39.60+30:07:45.88PGC071938ACIS-SNONE7.8
00:23:04.20-27:55:37.31PGC132768ACIS-SNONE6.5
02:41:25.51-08:07:36.88PGC3097911ACIS-SNONE5.7
23:11:46.80-28:31:45.12PGC740586ACIS-SNONE5.7
20:49:40.08-32:41:53.026dFJ2049400-324154ACIS-SNONE9
02:43:10.61-00:15:45.72PGC135659ACIS-SNONE2.7
12:20:17.76+75:22:15.38NGC4291ACIS-SNONE13.7
10:18:24.96+21:53:38.29NGC3193ACIS-SNONE7.2
14:20:43.20+39:41:36.89NGC5582ACIS-SNONE9.5
12:41:44.40+74:25:15.10NGC4648ACIS-SNONE11
15:57:15.60+05:59:54.10NGC6017ACIS-SNONE12.3
10:54:48.72+17:37:13.40NGC3457ACIS-SNONE5.2
11:51:47.76+48:40:59.20NGC3457ACIS-SNONE4.5
12:07:56.64+65:06:50.40NGC4121ACIS-SNONE9.5
12:35:32.64+73:40:29.39UGC07767ACIS-SNONE8.9
10:31:06.72+28:47:47.65NGC3265ACIS-SNONE8.3
09:43:31.20+31:58:36.84NGC2970ACIS-SNONE10.6
10:52:04.32+71:46:22.91UGC05955ACIS-SNONE7.8
11:06:40.56+20:05:08.38NGC3522ACIS-SNONE5.9
12:41:60.00+32:34:25.00NGC4627ACIS-SNONE2
16:02:47.52+19:47:14.75PGC056821ACIS-SNONE11.4
15:06:34.32+01:33:31.79PGC3119319ACIS-SNONE8.7
14:58:46.08+02:58:08.36PGC1242097ACIS-SNONE11.9
09:50:10.80+28:00:47.59PGC028305ACIS-SNONE8.2
15:09:14.88+01:55:17.08PGC1210284ACIS-SNONE11.3
10:19:01.44+21:17:01.57PGC030133ACIS-SNONE4.6
15:05:50.64+01:54:30.10PGC1209872ACIS-SNONE11.2
15:11:01.44+01:40:50.20PGC1202458ACIS-SNONE11
15:04:24.72+02:06:52.67PGC1216386ACIS-SNONE11.5
15:03:44.16+02:33:08.68PGC1230503ACIS-SNONE11.7
15:09:07.92+00:43:29.17SDSSJ150907.83+004329.7ACIS-SNONE10.4
15:08:12.48+01:29:59.24rACIS-SNONE9.9
15:08:22.80+01:47:54.31PGC1206166ACIS-SNONE10.5
15:08:01.44+02:09:03.67PGC1217593ACIS-SNONE4.5

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 11700501

Title: The Size of Quasar Non-Thermal/X-ray Emission Regions

Type: LP Total Time: 584

PI Name: Christopher Kochanek

We will use microlensing, where the stars in a lens galaxy magnify the accretion disk of a gravitationally lensed quasar, to measure the sizes of the X-ray emission regions of 7 gravitationally lensed quasars with well-sampled optical light curves and accretion disk size measurements. We will use these to determine the scaling of the non-thermal emission regions with black hole mass. For two active'' systems, RXJ1131-1231 and Q2237+0305, we will use longer observations in order to measure the X-ray energy dependence of the size. We have HST time to monitor the 6 with UV flux to probe thermal emission from near the inner edge of the disk. These observations can only be done with Chandra because future X-ray observatories will lack the necessary angular resolution.

R.A. Dec. Target Name Det. Grating Exp.Time
22:40:30.30+03:21:28.80Q2237+0305ACIS-SNONE180
11:31:51.60-12:31:57.00RXJ1131-1231ACIS-SNONE162
10:04:34.20+41:12:44.00SDSS1004+4112ACIS-SNONE24
04:38:14.90-12:17:14.40HE0435-1223ACIS-SNONE39
11:06:33.50-18:21:24.20HE1104-1805ACIS-SNONE39
01:58:41.40-43:25:04.20QJ0158-4325ACIS-SNONE30
09:24:55.90+02:19:24.90SDSS0924+0219ACIS-SNONE110

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 11700510

Title: The environmental and epoch dependence of radio-loud AGN feedback

Type: LP Total Time: 400

PI Name: Judith Croston

Feedback from radio-loud AGN outbursts is now thought to be an important ingredient in galaxy formation models, potentially solving the cooling flow' problem in cluster centres and helping to resolve long-standing problems in reconciling CDM models with observed properties of groups and clusters. Now that the role of radio-loud AGN feedback is established, the next step is to understand the relationship between radio-loud AGN energy input, environment and epoch, which appears complex and is currently poorly understood. This Chandra Large Project aims to address this question by characterizing the environments of a unique sample of radio galaxies spanning three orders of magnitude in radio luminosity at a single, cosmologically interesting redshift.

R.A. Dec. Target Name Det. Grating Exp.Time
13:01:25.00+36:58:09.40TOOT 1301+3658ACIS-SNONE40
12:55:55.80+35:56:35.80TOOT 1255+3556ACIS-SNONE40
16:26:48.50+45:23:42.60TOOT 1626+4523ACIS-SNONE40
16:30:32.80+45:34:26.00TOOT 1630+4534ACIS-SNONE40
13:07:27.10+36:39:16.40TOOT 1307+3639ACIS-SNONE40
17:31:43.80+66:38:56.707C 1731+6638ACIS-SNONE40
13:03:10.30+33:34:07.00TOOT 1303+3334ACIS-SNONE40
02:19:37.80+34:23:11.207C 0219+3423ACIS-SNONE40
08:50:24.80+37:47:09.106C 0850+3747ACIS-SNONE40
11:32:45.70+34:39:36.206C 1132+3439ACIS-SNONE40

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 11700858

Title: Jet-ISM Interactions in a Restarting Radio Galaxy 4C 29.30

Type: LP Total Time: 300

PI Name: Aneta Siemiginowska

We propose to study interactions between radio plasma and ISM with a deep 300ksec Chandra ACIS-S observation of a low redshift radio galaxy, 4C 29.30 where the complexity of such interactions is uniquely displayed allowing a direct mapping of the initial stage of the radio source growth. The high resolution Chandra image will match the resolution of optical and radio structures observed in this source. The X-ray morphology will provide the critical information needed for studying physical conditions and understanding the impact of the evolving radio source onto the host galaxy environment. Our target presents a great laboratory to study the physical mechanisms of AGN feedback, and so provide strong constraints on models of galaxy evolution.

R.A. Dec. Target Name Det. Grating Exp.Time
08:40:02.40+29:49:02.604c+29.30ACIS-SNONE300

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 11800102

Title: Extending the Deep Image of the Perseus Cluster: The Outer Bubbles, Filaments and Ripples

Type: LP Total Time: 500

PI Name: Andrew Fabian

Our existing 900ks image of the core of the Perseus cluster has revealed a wealth of detail on the bubbles, shocks and ripples caused by the action of the central AGN on the surrounding ICM. Most of the advances are directly due to the high surface brightness of the Perseus cluster (higher than any other cluster) and to the high spatial resolution of Chandra. This resolution is degraded significantly 4 arcmin or more off-axis, meaning that the region studied at the highest resolution is quite small. Here we propose three further exposures totalling 700ks to extend the highest resolution region, covering areas to the N and S of the nucleus where the current data suggest the presence of further intriguing and important structures due to the AGN activity.

R.A. Dec. Target Name Det. Grating Exp.Time
03:19:44.20+41:25:18.00Perseus cluster, Abell 426ACIS-INONE300
03:19:39.50+41:36:01.41Perseus cluster, Abell 426ACIS-INONE200

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 11800471

Title: Chandra Observations of a Complete Sample of SZE Selected Galaxy Clusters

Type: LP Total Time: 342.1

PI Name: Joseph Mohr

We propose to obtain X-ray observations of a complete sample of 16 SZE selected galaxy clusters from the South Pole Telescope (SPT) survey. The SZE selection produces an approximately mass limited sample (at all redshifts) over the existing 200 deg^2 SPT survey. The Chandra observations provide X-ray mass estimates and morphologies, allowing (1) an initial calibration of the SZE flux-mass relation and (2) early tests of cosmology and the evolution of structure. Our 346ks request leverages 625ks of GTO time in AO10/11; these X-ray data are crucial to developing an understanding of the new window on the universe that SPT has opened and in laying the foundation for future studies using the full SPT survey (~1400deg^2 by 2010).

R.A. Dec. Target Name Det. Grating Exp.Time
23:31:50.20-50:51:50.40SPT-CL 2332-5052ACIS-INONE5.9
05:46:36.00-53:45:21.60SPT-CL 0547-5345ACIS-INONE23.9
00:00:59.30-57:48:28.80SPT-CL 0001-5749ACIS-INONE7.3
23:42:45.10-54:11:20.40SPT-CL 2343-5411ACIS-INONE64.1
23:59:40.60-50:09:39.60SPT-CL 0000-5010ACIS-INONE22.7
05:51:35.30-57:09:21.60SPT-CL 0552-5709ACIS-INONE16.5
23:43:00.70-55:21:46.80SPT-CL 2343-5522ACIS-INONE75
05:09:19.90-53:42:07.20SPT-CL 0509-5342ACIS-INONE5.9
23:55:49.70-50:56:09.60SPT-CL 2356-5056ACIS-INONE11.5
05:28:02.60-52:59:52.80SPT-CL 0528-5300ACIS-INONE38.5
05:33:35.50-50:05:24.00SPT-CL 0534-5005ACIS-INONE75

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 11900514

Title: COMBH: Chandra Observations of M-sigma Black Holes

Type: LP Total Time: 360

PI Name: Kayhan Gultekin

Galaxies with dynamically-measured central BH masses allow us to understand BH accretion, jets, and interactions between BHs and host galaxies with a clarity not possible in random surveys. By measuring true Eddington fractions, we can calculate the energy in radiation vs mechanical jet energy and the efficacy of BHs in heating nuclear regions and affecting star formation. Remarkably, 1/3 of SMBHs making up the M-sigma relation have been poorly observed or totally unobserved with Chandra. We propose a survey of 15 M-sigma galaxies to complete the sample of reliable M-sigma SMBHs. For each galaxy we propose to obtain 30-60 ks exposures and an hour-long VLA observation. This survey will test and extend the fundamental plane of BH activity and facilitate studies of the origin of M-sigma.

R.A. Dec. Target Name Det. Grating Exp.Time
03:19:41.10-19:24:40.90NGC1300ACIS-SNONE30
09:13:43.00+76:28:31.20NGC 2748ACIS-SNONE30
09:12:24.40+35:01:39.10NGC2778ACIS-SNONE30
12:20:17.80+75:22:15.20NGC4291ACIS-SNONE30
12:51:48.00-10:27:17.00NGC4742ACIS-SNONE30
13:19:31.70-12:39:25.10NGC5077ACIS-SNONE30
14:21:03.70+03:16:15.60NGC5576ACIS-SNONE30
10:48:16.90+12:37:45.40NGC3384ACIS-SNONE30
12:30:57.70+12:16:13.30NGC4486AACIS-SNONE30
12:28:60.00+13:58:42.80NGC4459ACIS-SNONE30
12:39:55.90+10:10:33.90NGC4596ACIS-SNONE30
23:00:59.90+30:08:41.60NGC7457ACIS-SNONE30

Subject Category: STARS AND WD

Proposal Number: 12200128

Title: A Long Look at NGC 3603, the Milky Way's Starburst Cluster

Type: LP Total Time: 460

PI Name: Leisa Townsley

NGC 3603 is one of the youngest truly massive stellar clusters in the Galaxy and serves as a springboard for understanding super star clusters such as R136 in 30 Doradus. Recent advances in infrared imaging and UV/visual spectroscopy applied to NGC 3603 are yielding new catalogs of pre-Main Sequence stars and new spectral types for massive stars; advances in ACIS analysis techniques now give robust X-ray source properties in crowded fields that facilitate comparison with these new datasets. We will apply these new methods to a deep ACIS-I observation of NGC 3603 to study its massive stars (3 W-R + >100 O stars, including over half of the Galaxy's O3 stars), thousands of pre-main sequence stars, and diffuse X-ray emission that pervades the cluster, perhaps indicating cavity supernovae.

R.A. Dec. Target Name Det. Grating Exp.Time
11:15:07.20-61:15:35.20NGC 3603ACIS-INONE460

Subject Category: STARS AND WD

Proposal Number: 12200492

Title: SPINNING CORONA OF FK COM

Type: LP Total Time: 240

PI Name: Vinay Kashyap

FK Com (GIII) is an ultra-fast rotator - a coalesced binary that has spun up - and provides unique insights into activity at the extremes of dynamo action. Two consecutive Chandra orbits of ACIS-S/HETG and 20 orbits of HST/COS observations will be combined with contemporaneous Doppler imaging maps and spectropolarimetric field measurements to build 3D coronal models. We will: locate dominant coronal and TR structures using Doppler shifts; measure emission scale heights via rotational broadening; derive densities, abundances, and EM in both quiescent and flaring plasma; constrain the dynamic processes by line profile modeling; and measure microflaring effects. Results of this LP will provide a detailed legacy view of the workings of coronae at their extreme edge.

R.A. Dec. Target Name Det. Grating Exp.Time
13:30:46.80+24:13:57.70FK ComACIS-SHETG240

Subject Category: STARS AND WD

Proposal Number: 12200640

Title: X-rays from Planetary Nebulae: Unveiling Binarity, Magnetic Fields, and Wind Collisions

Type: LP Total Time: 570

PI Name: Joel Kastner

Chandra has yielded unparalleled insight into the processes involved in shaping planetary nebulae (PNe), via the detection of diffuse and/or point-like X-ray sources within PNe. Diffuse X-ray sources, whether due to hot bubbles'' or to collimated outflows or jets, allow us to probe the energetic shocks within PN wind interaction regions. Meanwhile, X-ray point sources in PNe provide unique diagnostics of circumstellar magnetic fields, accretion disks, wind shocks, and/or binary companions at PN cores. These results from Chandra's first decade have prompted the community of PN astronomers to propose the first systematic X-ray survey of PNe in the solar neighborhood.

R.A. Dec. Target Name Det. Grating Exp.Time
04:09:17.00+30:46:33.50NGC 1514ACIS-SNONE20
03:33:14.60-25:52:18.00NGC 1360ACIS-SNONE20
19:59:36.30+22:43:16.10NGC 6853ACIS-SNONE20
18:53:35.10+33:01:45.00NGC 6720ACIS-SNONE20
21:00:32.50+54:32:36.20NGC 7008ACIS-SNONE20
11:14:47.70+55:01:08.50NGC 3587ACIS-SNONE20
17:35:41.90-40:11:26.50PN Lo 16ACIS-SNONE30
19:18:28.10+06:32:19.30NGC 6781ACIS-SNONE30
09:39:09.10-02:48:32.00A66 33ACIS-SNONE30
17:13:44.20-37:06:15.90NGC 6302ACIS-SNONE30
01:42:19.90+51:34:31.10M 76ACIS-SNONE30
19:14:36.40-02:42:25.00NGC 6772ACIS-SNONE30
23:25:53.60+42:32:06.00NGC 7662ACIS-SNONE30
21:36:53.00+12:47:19.00NGC 7094ACIS-SNONE30
17:49:15.20-20:00:34.50NGC 6445ACIS-SNONE30
07:25:34.70+29:29:26.40NGC 2371ACIS-SNONE30
07:41:50.50-14:44:07.70NGC 2438ACIS-SNONE30
19:31:35.10+09:13:31.40NGC 6804ACIS-SNONE30
07:09:22.50-00:48:23.60NGC 2346ACIS-SNONE30
10:24:46.10-18:38:32.60NGC 3242ACIS-SNONE30
21:04:10.90-11:21:48.30NGC 7009ACIS-SNONE30

Subject Category: WD BINARIES AND CV

Proposal Number: 12300901

Title: X-RAY IMAGING OF NOVA SHELLS

Type: LP Total Time: 250

PI Name: JENNIFER SOKOLOSKI

Novae are the most common stellar explosions in the Universe, and the most energetic after GRBs and supernovae. Like other stellar explosions, optical data show that novae are aspherical and inhomogeneous. Although novae are known to be triggered by a thermonuclear runaway (TNR) on an accreting white dwarf, the means by which the observed structure is produced is less clear. Since the shaping of nova remnants must produce shocks, and thus X-rays, Chandra imaging provides a powerful tool for understanding how novae produce their rings, clumps, and jets. We propose a major comparative study of the X-rays from nova shells to determine the processes that shape the ejecta. This work has wider implications for the physics of jets and asymmetry production in all types of stellar explosions.

R.A. Dec. Target Name Det. Grating Exp.Time
17:50:13.20-06:42:28.40RS OphACIS-SNONE250

Subject Category: BH AND NS BINARIES

Proposal Number: 12400926

Title: Census of the Normal Spiral Arm Region

Type: LP Total Time: 540

PI Name: John Tomsick

Despite having only moderate hard X-ray sensitivity, the INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL) has greatly expanded our knowledge of High-Mass X-ray Binaries (HMXBs) by finding large numbers and new types of HMXBs. There are good reasons to think that even fainter HMXBs should be present, and we propose to use Chandra to survey part of the Norma region, which is the location with the highest density of HMXBs. This will be important for understanding the HMXB population and its evolution, the HMXB luminosity function and how faint wind-accrting HMXBs can be, as well as providing critical estimates for Advanced-LIGO source rates. IR follow-up is proposed, and the subarcsecond Chandra positions are critical.

R.A. Dec. Target Name Det. Grating Exp.Time
16:37:27.30-47:07:36.80Norma RegionACIS-INONE540

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 12500138

Title: A Survey of PWNe around Narrow-Pulse Gamma-ray Pulsars

Type: LP Total Time: 160

PI Name: Roger Romani

We propose here, on behalf of the Fermi LAT team, ACIS observations of the X-ray counterparts of six unusual gamma-ray pulsars discovered by the LAT. The targets, four seen only in the gamma-rays, two also radio-detected, have unusual single or narrow double pulse profiles, which require particular emission geometries for different pulsar models. By measuring the arcsecond-scale structure of the wind nebula termination shocks of these young (<100kyr) objects, CXO can pin down the viewing angle and test the pulsar physics. All have known X-ray fluxes and we can also extract spectral and distance estimates needed to interpret the GeV gamma-rays. The survey sample covers a range of ages, spindown powers and expected inclinations, making it a powerful test of pulsar emission models.

R.A. Dec. Target Name Det. Grating Exp.Time
14:20:08.20-60:48:16.60J1420-6048ACIS-INONE90
18:09:50.20-23:32:22.90J1809-2332ACIS-INONE30
17:18:13.60-38:25:18.10J1718-3825ACIS-SNONE40

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 12500822

Title: Radioactivity, Particle Acceleration, and Supernova Ejecta in the Youngest Galactic SNR G1.9+0.3

Type: VLP Total Time: 1000

PI Name: Kazimierz Borkowski

X-rays in G1.9+0.3 are produced primarily by energetic electrons accelerated in its very fast blast wave. However, the radio-bright but X-ray faint northern shell shows prominent thermal emission from supernova ejecta. Doppler broadening velocities are of order 26,000 km/s. An additional spectral line at 4.1 keV is emitted by radioactive 44Sc produced by the electron-capture decay of 44Ti. The line flux implies an initial mass of 44Ti synthesized in the explosion of 1.9 x 10-5 solar masses. The spatial distribution of 44Sc hints at an asymmetric explosion. We propose a 1 Ms Chandra observation, with the primary goal of mapping 44Sc emission. This observation will establish the degree of asymmetry of the explosion, and may distinguish between core-collapse and Type Ia origin for G1.9+0.3.

R.A. Dec. Target Name Det. Grating Exp.Time
17:48:45.00-27:10:00.10G1.9+0.3ACIS-SNONE1000

Subject Category: NORMAL GALAXIES: DIFFUSE EMISSION

Proposal Number: 12610312

Title: Understanding AGN Feedback with Deep Observations of NGC 5813

Type: LP Total Time: 500

PI Name: Scott Randall

NGC 5813 shows X-ray cavities and shocks from multiple AGN outbursts in an otherwise dynamically relaxed system. We propose a deep 500 ks observation of NGC 5813 to 1) measure the temperature structure across the inner shock to directly measure AGN feedback heating and compare with the outer shock, 2) better characterize the structure of the outermost cavities to study the evolution of the buoyantly rising bubbles, 3) better resolve the temperature and, in particular, abundance structure in the gas to measure its displacement due to AGN feedback, and 4) search for cavities from even older outbursts, beyond the currently detected outermost cavities. Joint observations with the VLA will allow a further exploration of the evolution of the radio properties of the buoyantly rising cavities.

R.A. Dec. Target Name Det. Grating Exp.Time
15:01:06.80+01:40:44.70NGC5813ACIS-SNONE500

Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS

Proposal Number: 12620596

Title: REMNANTS, BINARIES, AND DIFFUSE EMISSION IN THE NEARBY GRAND DESIGN SPIRAL M83

Type: LP Total Time: 750

PI Name: Knox Long

M83 is a nearby face-on grand-design spiral. With a high supernova rate, a starburst nucleus, and large numbers of high mass star clusters in the disk of the galaxy, it is a superb laboratory for understanding how the life cycle of stars and the interstellar medium interact to produce X-ray emission in normal galaxies. Here we propose a deep ACIS-S observation of M83. In addition to detailed spectral and temporal studies of the brightest 50 sources, we will relate the X-ray properties of the SNRs, XRBs, and diffuse X-ray emission to the local environment, using the underlying stellar population and/or distance from features like the spiral arms to constrain the progenitors of the sources, to test population models, and to explore the physical mechanisms responsible for diffuse emission.

R.A. Dec. Target Name Det. Grating Exp.Time
13:37:00.80-29:51:58.60M83ACIS-SNONE750

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 12700679

Title: A Definitive Observation of an Accretion Disk Wind in the Quasar MR 2251-178

Type: LP Total Time: 400

PI Name: James Reeves

The bright, nearby QSO MR 2251-178 was the first AGN where a warm absorber was detected. Subsequent observations have shown there are at least two outflowing components; a low ionization soft X-ray absorber and a fast (0.07c), high ionization wind. We propose a deep (400 ks) Chandra HETG observation of MR 2251-178 in order to unequivocally determine the origin of the outflow at the highest possible spectral resolution. Our goals are; (i) establish the nature of the high ionization outflow, e.g. as part of a disk wind, through unprecedented high S/N observations in the Fe/Si K band, (ii) determine the properties of the soft X-ray absorber through high resolution spectroscopy and (iii) establish the connection between the UV and X-ray absorbers with a simultaneous HST snapshot.

R.A. Dec. Target Name Det. Grating Exp.Time
22:54:05.80-17:34:55.00MR 2251-178ACIS-SHETG400

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 12700932

Title: THE FIRST SPATIALLY RESOLVED SPECTRUM OF AN AGN OUTFLOW IN AN EARLY-TYPE GALAXY: A DEEP HETG OBSERVATION OF MRK 3

Type: LP Total Time: 300

PI Name: Daniel Evans

We propose a 300-ks HETG observation of the resolved, kpc-scale AGN outflow that forms the photoionized NLR in the prototypical early-type galaxy Markarian 3. We will use Chandra's superb spatial and spectral resolution to extract, compare, and model spectra at four off-nuclear points along the NLR and ENLR. By performing a detailed modeling of the emission-line spectra, we will determine (1) the spatial extent of the outflow, (2) its velocity structure, and (3) the mass and energy rates imparted by the outflow into its environment. Our results will provide the first X-ray test of whether outflows in such early-type galaxies expel, as expected, significant quantities of material during their hosts' transition from the blue cloud to the red sequence.

R.A. Dec. Target Name Det. Grating Exp.Time
06:15:36.30+71:02:15.00Markarian 3ACIS-SHETG300

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 12800339

Title: Revealing the ICM transport processes with the bow shock, upstream shock and turbulent wake in Abell 2146

Type: LP Total Time: 400

PI Name: Helen Russell

Shock fronts generated by galaxy cluster mergers provide a key tool for studying the cluster gas. However, unambiguous detections of shock fronts are rare and only two have previously been found, those in the Bullet cluster and Abell 520. Our recent Chandra observation of Abell 2146 has revealed that this cluster has two Mach 2 merger shock fronts and a gas structure remarkably similar to the Bullet cluster (eg. Markevitch et al. 2002). We propose a deep observation of Abell 2146 to test electron-ion equilibrium, which was found to be shorter than the Coulomb time in the Bullet cluster, and investigate the ICM transport processes by studying the complex substructures and shocks in the subcluster tail.

R.A. Dec. Target Name Det. Grating Exp.Time
15:56:14.70+66:20:48.90Abell 2146ACIS-INONE400

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 12800433

Title: A Deep {\em Chandra} Study of NGC 4472 - Gas Dynamics in the Nearest Group-Cluster Merger

Type: LP Total Time: 300

PI Name: Ralph Kraft

We propose a deep, 300 ks, Chandra/ACIS-S observation of the nearby galaxy NGC 4472. NGC 4472 is the most optically luminous galaxy of the Virgo cluster, and is the dominant member of a group falling into M87. It is the nearest, brightest example of a group being ram-pressure stripped as it falls into a cluster, and this deep observation will elucidate microphysics of the stripping process unobservable in any other object. We will measure temperature and elemental abundance variations of 4% and 15% (90% confidence), respectively, on scales as small as 250pcx250pc. We will also make a deep study of the LMXB population, and probe the dynamics of the gas flow near the Bondi radius of the central SMBH.

R.A. Dec. Target Name Det. Grating Exp.Time
12:29:46.70+08:00:02.00NGC 4472ACIS-SNONE300

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 12800632

Title: Chandra Observations of the ACT Sample of SZE-Selected Galaxy Clusters

Type: LP Total Time: 477

PI Name: John Hughes

We propose to obtain Chandra observations of a complete sample of galaxy clusters detected by the Atacama Cosmology Telescope (ACT) using the Sunyaev-Zeldovich effect (SZE). The proposed ACIS-I observations of 14 massive, newly-discovered SZE clusters will provide a precision calibration of the SZE signal versus mass correlation out to redshifts of 1. This effort is part of an intensive multi-wavelength campaign to produce an unbiased, well-observed sample of massive galaxy clusters out to high redshifts for cosmological investigations. These proposed observations will allow us to link directly the X-ray and SZE properties of massive clusters, so that cosmologists can reliably utilize the new large cluster samples that are being accumulated from both Chandra and the new SZ experiments.

R.A. Dec. Target Name Det. Grating Exp.Time
01:02:53.00-49:15:16.90ACT J0102-4915ACIS-INONE60
04:38:21.00-54:19:48.10ACT J0438-5419ACIS-INONE20
02:45:28.50-53:02:05.00ACT J0245-5302ACIS-INONE20
06:16:37.30-52:27:37.10ACT J0616-5227ACIS-INONE39
02:35:50.70-51:21:55.40ACT J0235-5121ACIS-INONE20
02:32:50.30-52:57:50.00ACT J0232-5257ACIS-INONE20
05:59:46.00-52:50:21.40ACT J0559-5249ACIS-INONE115
03:04:19.10-49:21:53.50ACT J0304-4921ACIS-INONE23
02:37:04.70-49:38:39.30ACT J0237-4939ACIS-INONE42
06:41:37.80-49:46:54.70ACT J0641-4948ACIS-INONE20
02:15:15.10-52:12:53.90ACT J0215-5212ACIS-INONE21
02:17:10.70-52:44:32.00ACT J0217-5245ACIS-INONE20
03:46:58.60-54:39:31.00ACT J0346-5438ACIS-INONE37
07:07:08.00-55:23:37.00ACT J0707-5522ACIS-INONE20

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 12900343

Title: Securing a Detection of the Bulk of the Missing Baryons

Type: LP Total Time: 500

PI Name: Fabrizio Nicastro

We propose to optimize the use of X-ray and FUV observatories to settle unambiguously one of the most controversial and open problems of modern astrophysics: the existence of the Missing Baryons in a Warm-Hot Intergalactic Medium (WHIM). We will do this by targeting a 500 ks Chandra-LETG observation on the best available tracers of the bulk (~80%) of the Missing Baryons in the Universe: two intergalactic absorption systems recently detected through Broad HI Lya and triple-OVI absorption, respectively, in a moderate S/N HST-COS spectrum of the bright and relatively high-redshift (z>0.4) blazar 1ES 1553+113. The proposed observation is carefully designed to finally secure a detection of the WHIM and to obtain a first robust estimate of its metal content.

R.A. Dec. Target Name Det. Grating Exp.Time
15:55:43.00+11:11:24.001ES 1553+113HRC-SLETG500

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 12900635

Title: A CHandra survey of Extended Emission-line Regions in nearby Seyfert galaxies (CHEERS)

Type: LP Total Time: 335

PI Name: Junfeng Wang

We propose the ultimate' resolution Chandra imaging survey (CHEERS) of a far-IR selected sample of active galactic nuclei (AGN) from Schmitt et al. (2003). With complementary high resolution HST and radio data, CHEERS will (1) resolve the detailed X-ray morphology of the extended narrow line region and obtain full picture of the multiphase interstellar medium (ISM) with typical resolution of 0.4 arcsec; (2) investigate the X-ray emission mechanisms at AGN jet-ISM interaction regions and (3) measure mass and momentum outflow rates to evaluate the importance of AGN feedback. To achieve these goals, we request 335 ks ACIS-S observations and 5 HST orbits to supplement the archival data.

R.A. Dec. Target Name Det. Grating Exp.Time
03:36:46.20-35:59:57.30NGC 1386ACIS-SNONE80
10:48:23.50-25:09:43.40NGC 3393ACIS-SNONE70
12:25:46.80+12:39:43.80NGC 4388ACIS-SNONE30
12:35:36.60-39:54:33.40NGC 4507ACIS-SNONE45
06:15:36.40+71:02:15.10Mrk 3ACIS-SNONE30
01:43:57.80+02:21:00.00Mrk 573ACIS-SNONE80

Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 12910240

Title: Detecting the Hot Wind Escaping from the Galactic Center of the Milky Way

Type: LP Total Time: 300

PI Name: John Stocke

We propose a 300 ksec ACIS + LETG exposure to detect and study our own Galaxy's outflowing nuclear wind. We have used HST and FUSE to discover the absorption signature of this wind in intermediate (e.g. C III) and high (e.g. O VI) ions towards two extragalactic targets above and below the Galactic Center. One of these targets (PKS 2005-489) is bright enough to observe at low resolution with Chandra to address two important questions about this wind: (1) Does any portion of this wind (e.g., O VII & O VIII ions) escape the Galaxy? The C III & O VI ions do not have escape speed; and (2) What is the ionization state and thus the metallicity of the gas? The mass flux, dynamics, and metallicity of this wind will give us valuable insight into the star formation history of the Milky Way.

R.A. Dec. Target Name Det. Grating Exp.Time
20:09:25.40-48:49:51.60PKS 2005-489ACIS-SLETG300

Subject Category: STARS AND WD

Proposal Number: 13200221

Title: Simultaneous Chandra - CoRoT - Spitzer Observation of the Star Forming Region NGC 2264

Type: LP Total Time: 300

PI Name: Giuseppina Micela

We propose a 300 ks observation of the star forming region NGC2264, to be performed in December 2011, during a 30 day Spitzer and CoRoT joint observation of the region. The program, also involving a series of ground observations, will be a unique experiment: using three space telescopes we will, for the first time, monitor hundreds of young stellar objects simultaneously over a broad wavelength range. We will thus obtain crucial insights on the physics of flares, the morphology of coronal emitting structures, and the physical processes responsible for the extreme variability of Classical T Tauri Stars at all wavelengths.

R.A. Dec. Target Name Det. Grating Exp.Time
06:40:58.70+09:34:14.00NGC 2264ACIS-INONE300

Subject Category: STARS AND WD

Proposal Number: 13200314

Title: A systematic measurement of the mass-loss rate of Zeta Ori

Type: LP Total Time: 300

PI Name: Maurice Leutenegger

We propose a 300 ks HETGS observation of the O supergiant Zeta Orionis. In combination with 74 ks archival data, we will make very high signal-to-noise measurements of emission line profile shapes, which sensitively measure the wind optical depth as a function of wavelength. We will use the wavelength dependence of wind optical depth from all usable lines to make a precise measurement of the mass-loss rate. The wavelength dependence of wind optical depth will also test the importance of porosity. We will use XCMFGEN, our powerful new radiative transfer code, to construct global models which will be fit to X-ray, UV, and optical data, providing the strongest possible constraints on stellar and wind properties.

R.A. Dec. Target Name Det. Grating Exp.Time
05:40:45.50-01:56:33.20Zeta OrionisACIS-SHETG300

Subject Category: STARS AND WD

Proposal Number: 13200852

Title: Deep Imaging of M37, A Better Hyades

Type: LP Total Time: 450

PI Name: Marcel Agueros

Recent studies suggest that the picture of stellar LX decaying from 10 Myr to 5 Gyr as a single power-law is overly simplistic. M37, a Hyades analog, has been carefully surveyed in the optical, and we propose complementary deep (450 ksec) ACIS-I imaging of this open cluster. M37's rich membership, good match to Chandra's FOV, and large number of measured periods (~700) make it ideal for examining the evolution of coronal X-ray emission. Together, our X-ray and optical data will provide independent determinations of LX and v_rot; map out M37's X-ray luminosity function, with stacking of optically similar sources extending our flux limits by ~10x; test whether magnetic effects produce anomalous optical colors/luminosities for high LX sources; and characterize M37's interacting binaries.

R.A. Dec. Target Name Det. Grating Exp.Time
05:52:18.80+32:33:34.10M37ACIS-INONE450

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 13500124

Title: SN1006: SHOCK PHYSICS, COSMIC-RAY ACCELERATION, AND SN IA EXPLOSIONS

Type: LP Total Time: 690

PI Name: P. Winkler

Remnant of the brightest SN in recorded history, SN1006 is the object where the connection between SNR shocks and cosmic rays was first confirmed observationally. It is the closest and least absorbed of all the historical SNRs--yet it has been the least observed by Chandra. We propose deep ACIS observations to: 1) measure proper motions (through comparison with earlier data) to give the shock velocity around most of the shell; 2) elucidate the physics of nonthermal shocks and diffusive acceleration in unprecedented detail; and 3) study small-scale ejecta knots within SN1006 to obtain abundances and constrain the explosion properties. The new data will complete deep coverage for the entire SN1006 remnant, so deep studies of all the historical SNIa remnants will at last be in the archive.

R.A. Dec. Target Name Det. Grating Exp.Time
15:02:20.30-41:46:38.00SN1006 NWACIS-SNONE90
15:01:37.00-41:59:00.00SN1006 WACIS-INONE100
15:02:08.50-42:07:00.00SN1006 SWACIS-INONE100
15:03:05.00-42:08:60.00SN1006 SACIS-INONE100
15:02:52.20-41:56:16.00SN1006 CTRACIS-INONE100
15:03:14.80-41:42:45.00SN1006 NACIS-INONE100
15:03:51.00-42:03:30.00SN1006 SEACIS-INONE100

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 13500316

Title: Bowing to Pressure During the Reformation: A Study of the Composite SNR G327.1-1.1

Type: LP Total Time: 350

PI Name: Patrick Slane

G327.1-1.1 is a composite supernova remnant whose pulsar wind nebula is defined by an offset radio nebula and a cometary X-ray nebula surrounding a neutron star that appears to be moving rapidly through the remnant. Complex structures indicate that the PWN has been disrupted by the reverse shock of the SNR, and that the nebula is re-forming while being swept back into a bowshock-like morphology by the pressure associated with its rapid motion. The manner in which a PWN evolves through such a stage determines the ultimate spectrum of its relativistic particles, and the process by which they eventually escape into the ISM. We propose a deep Chandra observation of G327.1-1.1 in order to study its complex spectral and spatial structure during this crucial phase of evolution.

R.A. Dec. Target Name Det. Grating Exp.Time
15:54:37.60-55:05:49.70G327.1-1.1ACIS-INONE350

Subject Category: NORMAL GALAXIES: DIFFUSE EMISSION

Proposal Number: 13610752

Title: M51: Using the Kinematics of a Grand-Design Spiral to Understand the Physics of the Hot ISM, SNRs, and XRBs

Type: LP Total Time: 750

PI Name: K.D. Kuntz

M51 is an iconic grand design spiral galaxy with a strong arm/inter-arm density contrast and a high star-formation rate, but with very little star-formation between its arms. As a result, one can age-date the hot gas and high-mass binaries produced in the arms that have moved into the inter-arm regions. We propose a 750 ks observation with ACIS-S3 to employ this technique to measure gas cooling times, search for non-radiative cooling, and constrain time scales for HMXB evolution. We also propose 10 orbits of HST WFC3 observations in [SII], which with existing HST data, will allow the first comprehensive survey of the rich population of SNR expected in M51. Given the strong density contrast, we will better characterize SNR properties as a function of environment.

R.A. Dec. Target Name Det. Grating Exp.Time
13:30:00.00+47:12:00.00M51ACIS-SNONE750

Subject Category: NORMAL GALAXIES: DIFFUSE EMISSION

Proposal Number: 13610808

Title: A Chandra Legacy Project to Resolve the Accretion Flow of Gas Captured by a Supermassive Black Hole

Type: XVP Total Time: 1000

PI Name: Jimmy Irwin

We propose a 1 Msec observation of the hot gas around the supermassive black hole at the center of the nearby S0 galaxy NGC3115 in order to place the first direct observational constraints on the temperature and density structure of an accretion flow inside the Bondi radius of a black hole. These temperature/density constraints will provide a critical test for competing inefficient accretion flow theories. The large angular Bondi radius of this black hole provides the *only* opportunity to perform such a test of inefficient accretion flow theory in the Chandra era and the foreseeable future. An additional benefit of this long observation is that it will also provide the deepest look of the X-ray binary population of a normal early-type galaxy to date.

R.A. Dec. Target Name Det. Grating Exp.Time
10:05:14.00-07:43:06.90NGC3115ACIS-SNONE1000

Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS

Proposal Number: 13620807

Title: Chandra HETG Ultra-deep Gratings Spectroscopy of Sgr A* (CHUGSS)

Type: XVP Total Time: 3000

PI Name: Frederick Baganoff

We propose a 3-Msec HETG exposure to spatially and spectrally resolve the Bondi flow of Sgr A*. This would provide the first high spectral resolution data on Sgr A* and diffuse emission from the central pc of the galaxy. The spectrum will measure the energy and velocity width of the known Fe line from accreting matter within the Bondi radius. It will also detect plasma line emission (e.g., Si & S), if present at levels predicted by RIAF models. Polarization measurements suggest most of the matter crossing the Bondi radius does not reach the event horizon. Understanding the dynamics and thermal structure of this plasma will tell us how this matter flows in and how much and where some of it flows back out. This exposure will also permit extensive multiwavelength monitoring of Sgr A* flares.

R.A. Dec. Target Name Det. Grating Exp.Time
17:45:40.00-29:00:28.10Sgr A*ACIS-SHETG2680
17:45:40.00-29:00:28.10Sgr A*ACIS-SHETG160
17:45:40.00-29:00:28.10Sgr A*ACIS-SHETG40
17:45:40.00-29:00:28.10Sgr A*ACIS-SHETG40
17:45:40.00-29:00:28.10Sgr A*ACIS-SHETG40
17:45:40.00-29:00:28.10Sgr A*ACIS-SHETG40

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 13700587

Title: Quasar Feedback in Action: The Wide-Angle Wind of Mrk 231

Type: LP Total Time: 400

PI Name: Sylvain Veilleux

In recent months, our group has discovered a ~1000-km/s outflow in the nearest post-merger quasar Mrk 231 with mass outflow rate about 3x the star formation rate. This outflow extends over several kpc and is wide-angle, thus driven by a QSO wind rather than a jet. This powerful outflow may be the long-sought "smoking gun" of quasar mechanical feedback purported to transform gas-rich mergers into red and dead galaxies. We propose a 400-ksec ACIS-S observation of Mrk 231 to permit 2D spectral mapping of this QSO wind in the X-rays. The obscuring material in Mrk 231 will act as a natural coronagraph to help us study the faint X-ray nebula around the quasar. These data will also be used to monitor the central energy source and constrain the location of the obscuring / scattering material.

R.A. Dec. Target Name Det. Grating Exp.Time
12:56:14.20+56:52:25.00Mrk 231ACIS-SNONE400

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 13700784

Title: A DIRECT TEST OF AGN FEEDBACK IN LATE-TYPE GALAXIES: SPATIALLY RESOLVED HETG SPECTROSCOPY OF NGC 3393

Type: LP Total Time: 350

PI Name: Daniel Evans

We propose a 350-ks Chandra/HETG observation of the prototypical massive late-type galaxy NGC 3393, in order to (1) map the kinematics of the NLR, and (2) directly measure the mass outflow rate from the AGN. We will use extract, compare, and model the photoionized emission-line spectra at multiple off-nuclear points along the NLR and ENLR, constructing a picture of how the AGN imparts its energy into its environment. We will also use a novel technique to map the velocity field of the kpc-scale gas, directly constraining the spatial extent and impact of any AGN outflow. Our observations will provide the key test of whether or not outflows in such late-type galaxies expel significant quantities of material during their hosts' transition from the blue cloud to the red sequence.

R.A. Dec. Target Name Det. Grating Exp.Time
10:48:23.50-25:09:43.50NGC 3393ACIS-SHETG350

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 13800359

Title: Examining incredible structure in the core of the Coma cluster

Type: LP Total Time: 500

PI Name: Jeremy Sanders

We propose to make Chandra observations of the core of the Coma cluster that are an order of magnitude deeper than currently exist. With this substantial increase in detail we will study the quasi-linear structures that we have discovered from existing XMM data, which do not look like conventional hydrodynamical turbulence. The new observations will tell us much about the intracluster medium, including the degree of turbulence, the viscosity and the mixing of metals. We will look for shocks, sound waves and other features associated with the merger. We plan to also examine gas clumping and the coronae around the central galaxies. The Coma cluster is the best multiwavelength studied cluster and the 3rd X-ray brightest. This new observation will provide an excellent legacy resource.

R.A. Dec. Target Name Det. Grating Exp.Time
12:59:49.00+27:57:48.00Coma clusterACIS-INONE125
12:59:49.00+27:57:48.00Coma clusterACIS-INONE125
12:59:49.00+27:57:48.00Coma clusterACIS-INONE125
12:59:49.00+27:57:48.00Coma clusterACIS-INONE125

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 13800509

Title: CHANDRA EXPLORATION OF THE COSMIC MELTING POT IN THE VIRIALIZATION REGION OF A RICH GALAXY CLUSTER

Type: XVP Total Time: 2000

PI Name: Alexey Vikhlinin

The virialization zone of rich galaxy clusters, R500
R.A. Dec. Target Name Det. Grating Exp.Time
01:01:59.80-21:32:20.70A133-1ACIS-INONE250
01:01:13.90-22:02:30.80A133-3ACIS-INONE250
01:03:04.80-21:37:39.50A133-4ACIS-INONE250
01:02:19.00-22:07:50.70A133-5ACIS-INONE250
01:04:09.80-21:42:56.70A133-6ACIS-INONE250
01:03:24.20-22:13:09.00A133-8ACIS-INONE250
01:01:36.90-21:47:25.90A133-2ACIS-INONE250
01:03:47.00-21:58:02.90A133-7ACIS-INONE250

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 13800581

Title: Abell 115: It Takes Two to Tango - The interaction of Relativistic and Thermal Plasma in a Merging Subcluster

Type: LP Total Time: 310

PI Name: William Forman

We propose a 310 ks ACIS-I observation of the merging cluster A115 whose northern subcluster, A115-N, hosts 3C28 which shows two wispy "tails" pointing in the direction of subcluster motion! With 360 ks (310 ks new, plus 50 ks archival), we can study the hydrodynamics of the gas flow in and around A115-N to determine flow velocities that are traced by the radio plasma. We will measure and compare the circulation time of the gas to the aging time of the radio emitting electrons, understand the structure of the relativistic plasma (i.e., thin sheath or filled cavity) by measuring distortions in the X-ray surface brightness, investigate magnetic draping, and develop a 3D model for the merger using extensive optical spectroscopy with the velocity of A115-N measured from the X-ray analysis.

R.A. Dec. Target Name Det. Grating Exp.Time
00:55:56.50+26:22:10.00Abell 115ACIS-INONE310

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 13800764

Title: Chandra Observations of the Brightest Sunyaev-Zeldovich Effect Cluster

Type: LP Total Time: 300

PI Name: John Hughes

We propose deep Chandra observations of ACT-CL J0102-4915, the brightest Sunyaev-Zeldovich effect cluster discovered by the Atacama Cosmology Telescope and South Pole Telescope surveys. These surveys covered approximately 3000 square degrees and are essentially complete to high redshift. Our recent Chandra and VLT optical data reveal ACL-CL J0102-4915 to be undergoing a major merger. It is likely a high redshift (z=0.870) counterpart to the famous `bullet'' cluster. New Chandra data will determine the properties of the merger shock and the HST/ACS data will provide a weak lensing mass map.

R.A. Dec. Target Name Det. Grating Exp.Time
01:02:53.00-49:15:16.90ACT J0102-4915ACIS-INONE300

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 13800883

Title: Cosmology and Cluster Evolution from the 80 Most Massive Clusters in 2000 deg^2 from the South Pole Telescope Survey

Type: XVP Total Time: 2070.7

We propose Chandra X-ray observations to complete a mass-limited sample of 80 clusters of galaxies between 0.4 < z < 1.2, uniformly selected by the Sunyaev-Zeldovich effect from 2000 deg^2 surveyed by the South Pole Telescope. This sample increases the number of clusters at a similar mass threshold with X-ray observations by factors of 4 and 8 at z>0.6, 0.8, respectively, thereby providing a unique legacy sample for Chandra. These observations will significantly improve cluster-based dark energy constraints, are coordinated to overlap with several current and future cluster surveys, and will be uniquely valuable for the study of the formation and evolution of massive clusters.

R.A. Dec. Target Name Det. Grating Exp.Time
00:13:19.10-49:06:50.40SPT-CLJ0013-4906ACIS-INONE15.4
21:35:38.60-57:26:27.20SPT-CLJ2135-5726ACIS-INONE18.7
02:12:26.40-46:57:00.70SPT-CLJ0212-4656ACIS-INONE30.7
03:48:17.70-45:14:59.30SPT-CLJ0348-4514ACIS-INONE14.2
20:35:12.20-52:51:05.40SPT-CLJ2035-5251ACIS-INONE20.4
01:42:11.90-50:32:36.20SPT-CLJ0142-5032ACIS-INONE31.9
01:06:25.80-59:43:17.00SPT-CLJ0106-5943ACIS-INONE19.3
21:46:34.80-46:32:57.80SPT-CLJ2146-4632ACIS-INONE80.8
03:34:10.20-46:59:22.90SPT-CLJ0334-4659ACIS-INONE29
00:14:46.70-49:52:37.60SPT-CLJ0014-4952ACIS-INONE60.7
04:49:06.80-49:01:17.00SPT-CLJ0449-4901ACIS-INONE61.3
04:56:26.80-51:16:25.00SPT-CLJ0456-5116ACIS-INONE55.2
04:41:47.30-48:54:45.00SPT-CLJ0441-4854ACIS-INONE76.3
03:07:46.70-50:42:22.30SPT-CLJ0307-5042ACIS-INONE47.2
20:43:18.00-50:35:26.50SPT-CLJ2043-5035ACIS-INONE81.4
00:58:17.50-61:45:36.40SPT-CLJ0058-6145ACIS-INONE61
01:51:23.90-59:54:07.60SPT-CLJ0151-5954ACIS-INONE89
02:56:23.20-56:17:46.30SPT-CLJ0256-5617ACIS-INONE52
04:46:02.60-58:49:17.40SPT-CLJ0446-5849ACIS-INONE58.8
02:43:25.80-59:30:43.60SPT-CLJ0243-5930ACIS-INONE51.5
01:02:40.70-46:03:53.60SPT-CLJ0102-4603ACIS-INONE66.8
06:55:50.60-52:34:02.60SPT-CLJ0655-5234ACIS-INONE22.1
02:00:35.20-48:52:37.60SPT-CLJ0200-4852ACIS-INONE25.7
01:56:08.40-55:41:37.30SPT-CLJ0156-5541ACIS-INONE85.3
03:52:55.70-56:47:53.20SPT-CLJ0352-5647ACIS-INONE49.5
01:23:09.60-48:21:19.40SPT-CLJ0123-4821ACIS-INONE79.8
03:10:29.20-46:46:52.30SPT-CLJ0310-4646ACIS-INONE40.3
00:37:45.20-50:47:37.70SPT-CLJ0037-5047ACIS-INONE82.6
SPT-CLJ0000-0000ACIS-INONE38.46
SPT-CLJ0000-0000ACIS-INONE38.46
SPT-CLJ0000-0000ACIS-INONE38.46
SPT-CLJ0000-0000ACIS-INONE38.46
SPT-CLJ0000-0000ACIS-INONE38.46
SPT-CLJ0000-0000ACIS-INONE38.46
SPT-CLJ0000-0000ACIS-INONE38.46
SPT-CLJ0000-0000ACIS-INONE38.46
SPT-CLJ0000-0000ACIS-INONE38.46
SPT-CLJ0000-0000ACIS-INONE38.46
SPT-CLJ0000-0000ACIS-INONE38.46
SPT-CLJ0000-0000ACIS-INONE38.46
04:26:03.90-54:55:16.30SPT-CLJ0426-5455ACIS-INONE38.5
04:06:53.60-48:04:52.30SPT-CLJ0406-4804ACIS-INONE28.6
00:33:54.20-63:26:37.70SPT-CLJ0033-6326ACIS-INONE23.1
21:48:42.00-61:16:42.60SPT-CLJ2148-6116ACIS-INONE39.8
02:52:44.90-48:24:45.40SPT-CLJ0252-4824ACIS-INONE33.8
SPT-CLJ0000-0000ACIS-INONE38.46

Subject Category: STARS AND WD

Proposal Number: 14200176

Title: Wolf-Rayet Winds at High Spectral Resolution

Type: LP Total Time: 450

PI Name: David Huenemoerder

The physical origin of X-ray emission in single Wolf-Rayet (WR) stars is not known. We request 450 ks on WR 6 with HETGS to establish which mechanisms operate in the winds of massive stars at the end of their evolution, shortly before a supernova or gamma-ray burst explosion. High-spectral resolution above 1 kev with HETGS is required to resolve emission lines from the hottest X-ray emitting plasma and thereby determine the location of wind structures. Principal diagnostics of X-ray emission line profiles in conjunction with our state-of-the-art stellar atmospheres code will help unravel current uncertainties in wind generation.

R.A. Dec. Target Name Det. Grating Exp.Time
06:54:13.00-23:55:42.00WR 6ACIS-SHETG450

Subject Category: STARS AND WD

Proposal Number: 14200631

Title: Occultation Measurements of the Embedded Wind Shock Distribution in the Nearest Eclipsing O-star Binary

Type: LP Total Time: 500

PI Name: Michael Corcoran

We propose four phase-constrained Chandra/HETGS observations of the massive, eclipsing, single-line spectroscopic binary $\delta$~Ori. Delta Ori is one of the fundamental calibrators of the mass-luminosity-radius relation in the upper HR diagram.These HETGS observations will, for the first time, provide an in-situ measurement of the distribution of the embedded, X-ray emitting shocks in the wind of an O star via radial velocity, occultation and $f/i$ ratio diagnostics, as well as determine the primary star's clumping-corrected mass loss rate. These observations will help resolve critical uncertainties in our understanding of the connection between stellar and mass loss parameters and pioneer new X-ray analysis methods in massive star astrophysics.

R.A. Dec. Target Name Det. Grating Exp.Time
05:32:00.40-00:17:56.70Delta OriACIS-SHETG125
05:32:00.40-00:17:56.70Delta OriACIS-SHETG125
05:32:00.40-00:17:56.70Delta OriACIS-SHETG125
05:32:00.40-00:17:56.70Delta OriACIS-SHETG125

Subject Category: STARS AND WD

Proposal Number: 14200801

Title: COMPACT AND DIFFUSE X-RAY SOURCES IN THE YOUNGEST PLANETARY NEBULAE

Type: LP Total Time: 670

PI Name: Joel Kastner

The community of planetary nebula (PN) astronomers is undertaking ChanPLaNS, the first systematic X-ray survey of PNe in the solar neighborhood. ChanPlaNS is yielding such fundamental, new results as the frequency of appearance and range of X-ray spectral characteristics of X-ray-emitting PN central stars and the evolutionary timescales of wind-shock-heated bubbles within PNe. Here, we propose the next phase of the survey, in which we will observe all (24) remaining known compact (radius <= 0.4 pc), young PNe within ~1.5 kpc that have yet to be observed by Chandra. This LP represents the next step toward understanding the relationship between PN X-ray emission and PN shaping processes, and its results will have broad and profound impact on the study of binary stars and wind interactions.

R.A. Dec. Target Name Det. Grating Exp.Time
09:52:44.50-46:16:51.00PN G273.6+06.1ACIS-SNONE20
21:59:35.20-39:23:08.00IC 5148ACIS-SNONE20
17:22:15.70-38:29:03.50NGC 6337ACIS-SNONE20
19:31:07.20-03:42:31.50PN G034.1-10.5ACIS-SNONE20
15:51:40.90-51:31:28.60PN G329.0+01.9ACIS-SNONE30
08:37:08.00-39:25:05.40ESO 313-5ACIS-SNONE30
19:01:59.30+02:09:18.00LBN 036.00-01.26ACIS-SNONE30
19:46:34.20-23:08:12.90ESO 526-3ACIS-SNONE30
17:45:57.70-30:12:00.60ESO 455-33ACIS-SNONE30
18:54:37.20-08:49:39.10IC 1295ACIS-SNONE30
20:16:24.00+30:33:53.20NGC 6894ACIS-SNONE30
16:01:21.10-34:32:35.80NGC 6026ACIS-SNONE30
09:27:03.00-56:06:21.10NGC 2899ACIS-SNONE30
16:12:58.10-36:13:46.10NGC 6072ACIS-SNONE30
21:26:23.50+62:53:31.80NGC 7076ACIS-SNONE30
05:56:23.90+46:06:17.50IC 2149ACIS-SNONE30
17:29:20.40-23:45:34.80NGC 6369ACIS-SNONE30
22:40:19.80+61:17:08.70NGC 7354ACIS-SNONE30
17:47:56.20-29:59:41.90ESO 455-42ACIS-SNONE30
04:06:59.40+60:55:14.40NGC 1501ACIS-SNONE20
16:31:30.60-40:15:12.30NGC 6153ACIS-SNONE30
17:05:10.50-40:53:08.40IC 4637ACIS-SNONE30
18:09:29.90-24:12:23.50ESO 521-39ACIS-SNONE30
11:50:17.70-57:10:56.90NGC 3918ACIS-SNONE30

Subject Category: BH AND NS BINARIES

Proposal Number: 14400870

Title: The Small Magellanic Cloud - A Case Study of X-ray Populations at Low Metallicity

Type: XVP Total Time: 1100

PI Name: Andreas Zezas

We propose a deep survey of 11 fields (100 ks each) in the SMC probing young (10-100 Myr) stellar populations of different ages down to a luminosity limit of 2E32 erg/s, well into the regime of quiescent X-ray binaries and X-ray emitting normal stars. These observations will provide the deepest luminosity functions (XLFs) of X-ray binaries ever recorded, enabling us to: (a) directly measure their formation efficiency as a function of age; (b) address the evolution of their XLF in the 10-100Myr range, (c) constrain the duty cycles of accreting pulsars; and (d) constrain parameters relevant to their formation and evolution. We will also observe for the first time low (0.2Zo) metallicity stars, and we will search for central compact objects in SNRs, and characterize their SN type.

R.A. Dec. Target Name Det. Grating Exp.Time
01:11:10.10-72:44:03.50SMC Deep Field 01ACIS-INONE100
01:13:33.20-72:32:41.80Deep Field 02ACIS-INONE100
01:13:56.90-73:20:34.00Deep Field 03ACIS-INONE100
01:13:39.90-73:08:37.20Deep Field 04ACIS-INONE100
00:56:08.60-72:35:02.50Deep Field 05ACIS-INONE100
00:52:46.60-72:42:11.80Deep Field 06ACIS-INONE100
00:51:52.00-73:00:24.60Deep Field 07ACIS-INONE100
00:49:43.20-72:49:16.30Deep Field 09ACIS-INONE100
00:41:00.00-73:19:60.00Deep Field 10ACIS-INONE100
00:47:09.60-73:07:33.00Deep Field 11ACIS-INONE100
00:56:35.90-72:20:06.30Deep Field 08ACIS-INONE100

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 14500153

Title: A Legacy Study of the Relativistic Shocks of PWNe

Type: XVP Total Time: 1300

PI Name: Roger Romani

We propose deep ACIS observations of five pulsar wind nebulae (PWNe) with kyr-Myr ages. These carefully chosen targets show a high degree of axial symmetry in existing short ACIS images, so that the proposed imaging/spectroscopic studies can probe the geometry of the termination shock and the nature of the post-shock flow. Partitioning the exposure, we will also constrain instability growth and flow speed. By extending our view of PWN dynamics and evolution beyond the spectacular Crab and Vela nebulae, this legacy data set probes the mechanisms converting rotational energy to relativistic jet/torus outflow, key to astrophysical sources on many scales. Multiwavelength studies and modeling will also reveal parameters of the underlying pulsar accelerator and the wind-environment interaction.

R.A. Dec. Target Name Det. Grating Exp.Time
03:58:53.70+54:13:13.70PSR J0358+5413ACIS-INONE400
06:33:54.20+17:46:12.90PSR J0633+1746ACIS-INONE600
17:41:57.30-20:54:11.80PSR J1741-2054ACIS-SNONE300

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 14500702

Title: A Detailed Study of the Composite Supernova Remnant MSH 11-62

Type: LP Total Time: 375

PI Name: Patrick Slane

MSH 11-62 is a remarkable example of an evolved core-collapse supernova remnant. It appears to be evolving in a wind-blown cavity created by its massive progenitor, shows evidence for energetic particles accelerated by the SNR shock and for ejecta heated by the reverse shock, and is accompanied by a neutron star powering a bright pulsar wind nebula that is apparently being disrupted by the supernova remnant reverse shock. We propose a deep Chandra observation to turn our qualitative picture of this remnant into a quantitative investigation of its ambient medium, ejecta profile, and pulsar wind nebula structure. We will use these measurements to model the evolution of the system, constrain the properties of its progenitor, and address the nature of its gamma-ray emission.

R.A. Dec. Target Name Det. Grating Exp.Time
11:11:48.00-60:37:60.00MSH 11-62ACIS-INONE375

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 14500725

Title: G11.2-0.3: Core-Collapse Supernova Progenitors, Cosmic Rays, and Pulsar-Wind Nebulae

Type: LP Total Time: 400

PI Name: Stephen Reynolds

We propose a 400 ks observation of the young supernova remnant G11.2-0.3, a shell containing a pulsar-wind nebula and known pulsar, to address fundamental issues of core-collapse supernovae. Our observation should allow the determination of expansion proper motions and search for variability in the PWN; a sensitive search for thin rims of synchrotron X-ray emission; and greatly improved spectral characterization of shell emission, ejecta knots ahead of the blast wave, and mysterious interior thermal emission. G11.2-0.3 may be the remnant of a Type IIL/b (partially stripped) supernova, in which case our observations can constrain the nature of the progenitor wind, as well as give information on shock acceleration of electrons and the evolution of the interior pulsar-wind nebula.

R.A. Dec. Target Name Det. Grating Exp.Time
18:11:29.40-19:25:25.00G11.2-0.3ACIS-SNONE400

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 14500928

Title: A comparative study of two outstanding pulsar tails

Type: LP Total Time: 500

PI Name: Oleg Kargaltsev

Long pulsar tails detected in X-rays and radio are believed to result from the supersonic motion of pulsars through the ISM. The processes responsible for the tail formation, collimation, and stability are poorly understood. Short Chandra observations of two outstanding pulsar tails allowed us to characterize their general properties, but much remains to be learned about the complex physics of magnetized collimated flows. We propose much deeper observations of these two tails which show very different properties. We will measure their shapes and internal structures, perform definitive spatially-resolved spectroscopy, and study the connection with the radio tails. The results will advance our understanding of magnetized collimated outflows and their interaction with the ambient medium.

R.A. Dec. Target Name Det. Grating Exp.Time
15:09:27.10-58:50:56.10PSR J1509-5850 nebulaACIS-INONE380
17:47:25.90-29:59:58.00The MouseACIS-INONE120

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 14700473

Title: ENERGY DEPENDENT X-RAY MICROLENSING AND THE STRUCTURE OF QUASARS

Type: LP Total Time: 810

PI Name: Christopher Kochanek

The structure of the X-ray emitting regions of quasars remains an open question. Using microlensing in lensed quasars, we can now constrain the sizes, finding that they are compact compared to the UV emission (2500A) with 1/2 light radii of ~10-30 gravitational radii. We propose measuring the relative sizes of the hard and soft X-ray emission, better constraining the overall X-ray sizes and comparing them to the hottest regions of the accretion disk by coarsely monitoring 6 lenses with CXO (6 epochs each) and 5 with HST/UV (2 epochs). In essence, the variability amplitudes of the X-ray/UV compared to our well-sampled optical light curves allows us to measure the sizes. We request ~2/3 (1/3) of the time in Cycle 14 (15) for a total of 864~ks (with slew tax) and 12 HST orbits.

R.A. Dec. Target Name Det. Grating Exp.Time
01:58:41.40-43:25:04.20QJ0158-4325ACIS-SNONE114
04:38:14.90-12:17:14.40HE0435-1223ACIS-SNONE222
10:04:34.20+41:12:44.00SDSS1004+4112ACIS-SNONE150
11:06:33.50-18:21:24.20HE1104-1805ACIS-SNONE84
22:40:30.30+03:21:28.80Q2237+0305ACIS-SNONE180
11:31:51.60-12:31:57.00RXJ1131-1231ACIS-SNONE60

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 14700824

Title: Joint Chandra/XMM/EVLA Monitoring of the Gas Cloud G2 as it Encounters Sgr A*

Type: LP Total Time: 300

PI Name: Daryl Haggard

A dense, cold cloud (G2) is on a collision course with Sgr A*, the radio source at our Galactic Center. G2 is on an eccentric orbit and already shows signs of tidal disruption by the black hole. High-energy emission from Sgr A* will likely increase significantly due to this encounter, peaking at pericenter (summer 2013). We propose simultaneous Chandra, XMM, and EVLA monitoring observations to constrain the rates and emission mechanisms of faint X-ray flares, study the radiation properties of Sgr A* as G2 breaks up and feeds gas to the central accretion flow, and detect G2 itself as it is shocked and heated. Multiwavelength observations of this encounter will have a profound impact on our understanding of radiatively inefficient accretion flows into, and outflow from, massive black holes.

R.A. Dec. Target Name Det. Grating Exp.Time
17:45:40.00-29:00:27.90Sgr AACIS-INONE50
17:45:40.00-29:00:27.90Sgr AACIS-INONE50
17:45:40.00-29:00:27.90Sgr AACIS-INONE50
17:45:40.00-29:00:27.90Sgr AACIS-INONE50
17:45:40.00-29:00:27.90Sgr AACIS-INONE50
17:45:40.00-29:00:27.90Sgr AACIS-INONE50

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 14700854

Title: C-GOALS: The Chandra-RBGS Survey of a Complete Sample of Major-Merger LIRGs

Type: LP Total Time: 435

PI Name: David Sanders

We propose to finish our Chandra-ACIS survey of a statistically complete sample of 87 major-merger LIRGs [log(Lir/Lsun)=11.0-12.57], from the IRAS RBGS. Our proposed Cycle-14 observations of the 29 lower-luminosity objects (11.0-11.72) will allow us to have a uniform and complete census of AGN and X-ray luminous starbursts in the nearest and brightest major-merger LIRGs, and will complement our existing Spitzer-IRAC/MIPS/IRS, HST-ACS, GALEX and Herschel observations 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?

R.A. Dec. Target Name Det. Grating Exp.Time
01:51:14.00+22:34:55.00NGC 0695ACIS-SNONE15
01:20:01.40+14:21:35.00CGCG 436-030ACIS-SNONE15
13:01:49.90+04:20:01.00CGCG 043-099ACIS-SNONE15
18:33:35.60+59:53:20.00NGC 6670A/BACIS-SNONE15
13:52:16.60+02:06:08.00NGC 5331ACIS-SNONE15
06:09:45.10-21:40:22.00IRAS F06076-2139ACIS-SNONE15
11:25:47.30+14:40:23.00IC 2810ACIS-SNONE15
18:11:37.30+01:31:40.00IRAS 18090+0130ACIS-SNONE15
16:42:39.20-09:43:11.00IRAS F16399-0937ACIS-SNONE15
18:13:38.60-57:43:36.00IC 4687/6ACIS-SNONE15
16:19:10.30-07:53:57.00IRAS F16164-0746ACIS-SNONE15
23:16:01.70+25:33:33.00IC 5298ACIS-SNONE15
04:21:20.00-18:48:48.00ESO 550-IG025ACIS-SNONE15
00:11:06.60-12:06:27.00NGC 0034ACIS-SNONE15
00:54:04.00+73:05:13.00MCG+12-02-001ACIS-SNONE15
17:16:36.30-10:20:40.00IRAS F17138-1017ACIS-SNONE15
12:06:53.00-31:57:08.00ESO 440-IG058ACIS-SNONE15
13:01:25.90+29:18:46.00NGC 4922ACIS-SNONE15
09:36:39.30+48:28:19.00MCG+08-18-013ACIS-SNONE15
02:46:17.00+13:05:45.00UGC 02238ACIS-SNONE15
10:04:02.70-06:28:35.00NGC 3110ACIS-SNONE15
09:46:20.30+03:03:22.00IC 563/4ACIS-SNONE15
03:54:16.40+15:55:44.00CGCG 465-012ACIS-SNONE15
13:02:20.50-15:46:05.00MCG-02-33-098/9ACIS-SNONE15
21:36:10.80-38:32:38.00ESO 343-IG013ACIS-SNONE15
04:34:00.10-08:34:46.00NGC 1614ACIS-SNONE15
20:37:18.60+25:31:42.00IRAS 20351+2521ACIS-SNONE15
00:42:46.50-23:33:31.00NGC 0232ACIS-SNONE15
08:44:27.60-31:41:41.00ESO 432-IG006ACIS-SNONE15

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 14800360

Title: Extreme constraints on ICM physics and cosmology: a deep observation of XMMUJ0044, the most distant massive cluster

Type: LP Total Time: 380

PI Name: Paolo Tozzi

We propose a deep (380 ks) Chandra observation of the distant galaxy cluster XMMUJ0044 at z=1.58. With this observation we will push detailed studies of X-ray clusters to the edge of the current discovery limit, by measuring global temperature and Fe abundance, gas and total mass, putting strong constraints on the time formation of cool core, on the chemical enrichment time scale, on the relation between ICM and galaxy population, and deriving the best constraint to the standard Lambda-CDM model attainable at present. These results, achievable only with Chandra, are secured by a first X-ray characterization of XMMUJ0044 based on XMM data, and will constitute an unrivaled reference for distant cluster studies until the next generation of high-angular resolution X-ray satellites.

R.A. Dec. Target Name Det. Grating Exp.Time
00:44:05.20-20:33:59.70XMMUJ0044.0-2033ACIS-SNONE380

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 14800365

Title: A Chandra-Planck Legacy Program for Massive Clusters of Galaxies

Type: XVP Total Time: 988

PI Name: Christine Jones

ESA's Planck Mission has provided a large, statistically representative sample of very massive clusters, detected over the full sky through their SZ effect. The Planck clusters are sufficiently X-ray bright that for all 165 z<0.35 clusters, Chandra will collect 10,000 source counts to characterize each cluster's dynamical state, including merger properties, measure cluster masses and mass proxies and define local cluster mass and temperature functions. Chandra observations will provide a benchmark at low redshifts for comparison to high redshift clusters and to cosmological N-body simulations. Our team is expert in the analysis of X-ray and SZ data and in theory, simulations, lensing, and radio studies of clusters. We plan to make our cluster analysis products available to the community.

R.A. Dec. Target Name Det. Grating Exp.Time
10:43:24.80-20:37:18.00G106.73-83.22ACIS-INONE12
21:35:19.90+01:23:14.50G055.97-34.88ACIS-INONE20
18:04:29.70+18:04:29.70G036.72+14.92ACIS-INONE10
05:16:37.50-54:31:31.80G262.25-35.36ACIS-INONE22
06:16:19.80-21:57:35.00G229.21-17.24ACIS-INONE24
22:18:41.30-38:54:16.80G002.74-56.18ACIS-INONE11
19:47:09.30-76:23:52.00G318.13-29.57ACIS-INONE20
21:27:03.50-12:09:19.00G039.85-39.98ACIS-INONE15
19:38:19.70+54:09:26.30G086.45+15.29ACIS-INONE15
10:22:27.30+50:06:16.30G163.72+53.53ACIS-INONE14
22:23:49.30-01:37:13.20G062.42-46.41ACIS-INONE9
20:23:24.30-55:34:26.50G342.31-34.90ACIS-INONE21
09:45:26.20-08:40:06.00G244.69+32.49ACIS-INONE16
02:25:56.00-41:54:53.00G256.45-65.71ACIS-INONE15
05:32:59.40-37:01:39.60G241.74-30.88ACIS-INONE25
03:03:53.10-77:52:14.40G294.66-37.02ACIS-INONE34
10:23:44.10+49:08:17.00G165.08+54.11ACIS-INONE10
22:17:46.10-35:43:22.20G008.44-56.35ACIS-INONE12
10:39:28.10+05:10:06.00G241.85+51.53ACIS-INONE14
17:47:18.00+45:13:30.70G071.61+29.79ACIS-INONE21
11:59:23.00+49:47:39.00G143.24+65.21ACIS-INONE22
19:34:54.00-50:53:18.80G347.18-27.35ACIS-INONE25
05:25:50.00-47:14:38.30G253.47-33.72ACIS-INONE18
13:15:06.60+51:49:27.20G114.33+64.87ACIS-INONE31
23:39:44.00-85:10:33.00G304.67-31.66ACIS-INONE23
06:16:29.50-39:48:28.80G247.17-23.32ACIS-INONE17
12:36:57.40+63:11:08.00G125.70+53.85ACIS-INONE29
09:20:24.80+30:30:09.20G195.62+44.05ACIS-INONE38
14:14:05.30+71:17:36.50G113.82+44.35ACIS-INONE19
18:19:55.30+57:09:57.30G085.99+26.71ACIS-INONE35
10:00:02.10-30:15:55.80G264.41+19.48ACIS-INONE31
20:51:50.20-58:45:23.00G345.40-39.34ACIS-INONE30
12:01:04.00-39:52:11.00G292.51+21.98ACIS-INONE45
19:14:36.90-59:28:19.90G337.09-25.97ACIS-INONE25
09:38:21.40+52:02:38.40G164.61+46.39ACIS-INONE42
12:59:37.60+60:04:41.90G121.11+57.01ACIS-INONE44
06:21:55.00+74:41:38.40G139.59+24.18ACIS-INONE18
11:11:37.10+40:50:01.90G172.88+65.32ACIS-INONE12
05:10:13.00-45:19:29.00G250.90-36.25ACIS-INONE16
05:31:34.70-75:11:26.40G286.58-31.25ACIS-INONE24
18:54:06.00+68:22:15.00G098.95+24.86ACIS-INONE17
06:37:19.50-48:28:50.40G257.34-22.18ACIS-INONE25
21:04:22.90-41:21:46.00G000.44-41.83ACIS-INONE14
11:42:37.40+58:32:14.30G139.19+56.35ACIS-INONE33
12:15:28.80-39:01:47.00G295.33+23.33ACIS-INONE15

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 14800434

Title: A Detailed Study of the Longest Known Ram Pressure Stripped Tail with Deep Chandra Observations of M86

Type: LP Total Time: 350

PI Name: Scott Randall

We propose deep Chandra observations of the ram pressure stripped tail in M86, the longest ram pressure stripped tail known. M86 is nearby, in the Virgo cluster (~17 Mpc), and is X-ray bright. With Chandra's high spatial resolution we will image fine detail in the tail, and map the temperature and abundance structure along the tail. We will determine the origin of the stripped gas, place limits on gas mixing in the tail with the ICM, and ultimately place constrains on ICM microphysics through comparisons with detailed hydrodynamical simulations.

R.A. Dec. Target Name Det. Grating Exp.Time
12:25:45.90+13:04:52.00M86 Inner TailACIS-INONE150
12:25:02.30+13:16:54.60M86 Outer TailACIS-INONE200

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 14800815

Title: Resolving the nearest cold front in the sky: the cleanest experimental tool to study detailed ICM physics

Type: LP Total Time: 500

PI Name: Norbert Werner

We propose a very deep legacy-class observation of the nearest, best resolved cold front in the sky which lies 90 kpc to the North of M87. Cold fronts are known to be remarkably sharp, with gas density and temperature discontinuities several times sharper than the Coulomb mean free path. The proposed observation will provide an extraordinary improvement in resolution (resolving ~80 pc scales), allowing to study the cold front interface in unprecedented detail. Cold fronts provide a relatively simple experimental setup - a unique tool to study ICM physics. The proposed observation will place crucial constraints on fundamental physical processes shaping cold fronts, such as: growth of instabilities in the ICM, intra-cluster magnetic fields, gas velocities, conduction and viscous stresses.

R.A. Dec. Target Name Det. Grating Exp.Time
12:29:56.30+12:38:39.60Virgo cold frontACIS-INONE500

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 14900904

Title: The COSMOS Legacy Survey

Type: XVP Total Time: 2800

PI Name: Francesca Civano

We propose the COSMOS-Legacy Survey covering the entire 1.7deg2 COSMOS/HST area to a uniform depth of ~160ks, expanding the current deep C-COSMOS area by a factor 3, with 56x50 ks pointings for a total of 2.8 Ms. This area and depth proposed are designed to detect~40 z>4, and ~4 z>5 Large Scale Structures on >15' scales, connecting luminous Chandra quasars (among over 200 z>3 quasars) and sub-mm galaxies, a method already proven in C-COSMOS. The area/depth combination also probes mini-quasars at z>7 using anistotropies of the unresolved XRB and the masses of the DM halos hosting X-ray AGN up to z~3 via autocorrelation functions on ~30' scales. Large programs with SCUBA2, NuSTAR, Subaru and Keck over the COSMOS field will identify and get redshifts for all COSMOS-Legacy sources.

R.A. Dec. Target Name Det. Grating Exp.Time
10:00:29.90+02:12:40.00COSMOS LegacyACIS-INONE2800

Subject Category: STARS AND WD

Proposal Number: 15200565

Title: Accretion-Driven Physics on the Young Star BP Tauri

Type: LP Total Time: 600

PI Name: Nancy Brickhouse

We propose 600 ks with LETG/ACIS-S on the accreting young star BP Tau to study its X-ray emission physics. Our Chandra Large Program on TW Hya has resulted in definitive evidence for accretion, a puzzle over the soft X-ray emission producing O VII emission, and correlations between X-ray and optical signatures related to accretion. Spectral diagnostics from He-like Ne IX constrain all the properties of a simple accretion model, which incorporates the geometrical constraints provided by line-based absorption diagnostics. This deep Chandra spectrum is needed to determine the impact of accretion on a more typical accreting system with different orientation. We will also conduct a campaign to obtain optical photometry, spectroscopy, and spectropolarimetry (for magnetic topology maps).

R.A. Dec. Target Name Det. Grating Exp.Time
04:19:15.80+29:06:26.90BP TauACIS-SLETG600

Subject Category: BH AND NS BINARIES

Proposal Number: 15400412

Title: A Definitive Test of Relativistic Disk Lines in Neutron Stars

Type: LP Total Time: 300

PI Name: Edward Cackett

Accretion disks around neutron stars must be truncated at the stellar surface. If neutron star spectra contain relativistic lines from the inner disk, these lines could then give constraints on stellar radii and the neutron star equation of state. Such lines have recently been claimed in many sources. However, other work has brought the nature of these lines into question, largely owing to instrumental effects such as photon pile-up. The resolution of the HETG is ideally suited to testing the nature of such lines, and it is uniquely resistant to photon pile-up when the ACIS array is run in 'CC' mode. As a unified group of six teams, we request a 300 ksec observation of Serpens X-1 to definitively resolve the nature of iron lines in neutron star low-mass X-ray binaries.

R.A. Dec. Target Name Det. Grating Exp.Time
18:39:57.60+05:02:09.60Serpens X-1ACIS-SHETG300

Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS

Proposal Number: 15620853

Title: Monitoring the Tidal Disruption of the Gas Cloud G2 As It Encounters Sgr A*

Type: LP Total Time: 420

PI Name: Daryl Haggard

A dense, cold cloud (G2) is on a collision course with Sgr A*, the radio source at our Galactic Center. G2 is on an eccentric orbit and shows signs of tidal disruption by the black hole. High-energy emission from the Sgr A*/G2 encounter will likely peak at pericenter and continue over the next several years as the material circularizes. We propose 9 ACIS-S monitoring observations (5 simultaneous with VLA) to study the radiation properties of Sgr A* as G2 breaks up and feeds the accretion flow, to constrain the rates and emission mechanisms of faint X-ray flares, and to detect G2 itself as it is shocked and heated. Multiwavelength observations of this encounter will have a profound impact on our understanding of inefficient accretion flows into, and outflow from, massive black holes.

R.A. Dec. Target Name Det. Grating Exp.Time
17:45:40.00-29:00:28.10Sgr A*ACIS-SNONE50
17:45:40.00-29:00:28.10Sgr A*ACIS-SNONE50
17:45:40.00-29:00:28.10Sgr A*ACIS-SNONE50
17:45:40.00-29:00:28.10Sgr A*ACIS-SNONE50
17:45:40.00-29:00:28.10Sgr A*ACIS-SNONE50
17:45:40.00-29:00:28.10Sgr A*ACIS-SNONE40
17:45:40.00-29:00:28.10Sgr A*ACIS-SNONE40
17:45:40.00-29:00:28.10Sgr A*ACIS-SNONE40
17:45:40.00-29:00:28.10Sgr A*ACIS-SNONE50

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700397

Title: Unifying X-ray winds in radio galaxies with Chandra HETG

Type: LP Total Time: 500

PI Name: Francesco Tombesi

X-ray winds are routinely observed in the spectra of Seyfert galaxies. They can be classified as warm absorbers (WAs), with v~100-1,000km/s, and ultra-fast outflows (UFOs), with v>10,000km/s. In stark contrast, the lack of sensitive enough observations allowed the detection of WAs or UFOs only in very few radio galaxies. Therefore, we propose to observe a small sample of three radio galaxies with the Chandra HETG - 3C111 for 150ks, 3C390.3 for 150ks and 3C120 for 200ks - to detect and study in detail their WAs. We will quantify the importance of mechanical feedback from winds in radio galaxies and compare them to the radio jet power. We will also test whether WAs and UFOs can be unified in a single, multi-phase and multi-scale outflow, as recently reported for Seyferts.

R.A. Dec. Target Name Det. Grating Exp.Time
04:18:21.30+38:01:35.803C 111ACIS-SHETG150
18:42:09.00+79:46:17.103C 390.3ACIS-SHETG150
04:33:11.10+05:21:15.603C 120ACIS-SHETG200

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 15800474

Title: Deep imaging and spectroscopy of the Centaurus cluster: metals and filaments

Type: LP Total Time: 500

PI Name: Jeremy Sanders

The Centaurus cluster is nearby, bright and has a metallicity three times that of other nearby clusters. It is one of the best targets in which to study ICM metal physics. We will probe metallicity structure to sub-kpc scales, matching AGN feedback scales. The central drop in metallicity implies metals are locked in dust associated with filaments. We will examine Ar/Ne which are not, testing this hypothesis. The spectrum of metallicity fluctuations will probe diffusion and turbulence. Additional science goals will be to examine Type Ia/II enrichement, the pressure variations caused by radio bubbles to study feedback, the magnetic field structure and the soft X-ray connection to the optical filaments.

R.A. Dec. Target Name Det. Grating Exp.Time
12:48:48.90-41:18:43.80Centaurus clusterACIS-SNONE500

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 15800657

Title: Chandra Observations of a Complete Sample of SZE Clusters from ACT

Type: LP Total Time: 237

PI Name: John Hughes

We propose to continue our program with Chandra to observe a complete sample of galaxy clusters detected by the Atacama Cosmology Telescope using the Sunyaev-Zeldovich effect (SZE). The proposed ACIS-I observations of 10 massive, newly-discovered SZE clusters will provide a precision calibration of the SZE signal versus mass scaling law out to redshifts of 1. This effort is part of an intensive multi-wavelength campaign to produce an unbiased, well-observed sample of massive galaxy clusters out to high redshifts for cosmological investigations.

R.A. Dec. Target Name Det. Grating Exp.Time
00:22:13.00-00:36:33.80ACT-CL J0022-0036ACIS-INONE72
00:59:08.50-00:50:05.80ACT-CL_J0059-0049ACIS-INONE40
00:14:54.10-00:57:08.50ACT-CL_J0014-0056ACIS-INONE30
02:06:13.40-01:14:17.00ACT-CL_J0206-0114ACIS-INONE30
21:54:32.40-00:49:00.40ACT-CL_J2154-0049ACIS-INONE65

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 15800706

Title: Hydrodynamics of merging and stripping in the Fornax Cluster: A Deep Chandra observation of NGC 1404

Type: LP Total Time: 500

PI Name: Ralph Kraft

Early-type galaxies falling into clusters provide an excellent probe for ICM properties as they are stripped due to their motion through the cluster gas. They form a tail of gas attached to the remnant merger core (RMC). Both the upstream and side edge of the RMC and the tail are sites where the cool galaxy gas and the hot ambient ICM could mix, unless prevented by ICM viscosity or magnetic fields. The RMC of NGC 1404 in the Fornax cluster is the best target to observe the absence or presence of this mixing. We propose 500 ks Chandra/ACIS-S observations of NGC 1404 to make a direct measurement of gas mixing and viscosity in the ICM with a sensitivity that cannot be reached in any other target. We support the interpretation of our data by specifically tailored hydro simulations.

R.A. Dec. Target Name Det. Grating Exp.Time
03:38:51.90-35:35:40.00NGC 1404ACIS-SNONE400
03:39:16.40-35:39:40.20NGC 1404 tailACIS-SNONE100

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 15800858

Title: Clusters, Galaxies, and AGN in HST Frontier Fields

Type: LP Total Time: 520

PI Name: Christine Jones

We propose deep Chandra ACIS-I observations for three HST Frontier Field clusters to obtain 80k source counts for each cluster. The Frontier cluster A2744 already has 80k counts. We also propose JVLA observations for two Frontier clusters and have approved JVLA observations for a third. We will combine the HST cluster lensing mass maps with deep Chandra, HST, and Spitzer imaging, radio and SZ maps, extensive optical spectroscopy, and numerical simulations to understand the physics of the mergers, the transformations of cluster galaxies, and the generation of radio halos and relics in all four HST Frontier clusters that will be observed in HST Cycles 21/22. The combination of Chandra and HST imaging in the parallel fields will test if galaxy mergers play a dominant role in triggering AGN.

R.A. Dec. Target Name Det. Grating Exp.Time
07:17:32.00+37:45:32.50MACSJ0717.5+3745ACIS-INONE71
04:16:08.60-24:04:40.60MACSJ0416.1-2403ACIS-INONE217
11:49:35.10+22:24:18.40MACSJ1149.5+2223ACIS-INONE232

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 15900132

Title: The Chandra Deep Field-South: A Peerless Ultradeep Survey for Exploring the Distant X-ray Universe

Type: XVP Total Time: 3000

PI Name: William Brandt

We propose to push the CDF-S exposure to 8 Ms to create a peerless ultradeep survey for exploring the distant X-ray universe. The powerful combination of improved sensitivity and improved photon statistics will (1) determine how obscured SMBHs grow and co-evolve with galaxies through the z ~ 1-4 era of massive galaxy assembly; (2) constrain the majority AGN population in the first galaxies at z ~ 4-8; and (3) clarify the evolution of X-ray binary populations in high-redshift starburst and normal galaxies. The proposed observations target parameter space that has never been probed by X-ray surveys and will be unequaled for decades. They will also be critical for complementing future ultradeep surveys with, e.g., ALMA, JWST, and ELTs.

R.A. Dec. Target Name Det. Grating Exp.Time
03:32:28.10-27:48:26.40Chandra Deep Field-SouthACIS-INONE3000

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 15900142

Title: The Tarantula -- Revealed by X-rays (T-ReX): A Definitive Chandra Investigation of 30 Doradus

Type: XVP Total Time: 2000

PI Name: Leisa Townsley

30 Doradus is the most important star-forming complex in the Local Group, offering a microscope on starburst astrophysics. At its heart is R136, the most massive resolved stellar cluster, containing the most massive stars known. Across 30 Dor's 250-pc extent, stellar winds and supernovae have carved its ISM into an amazing display of arcs, pillars, and bubbles. So far, Chandra has devoted only 114 ks to this iconic target, limiting our studies just to the most massive stars and large-scale diffuse phenomena. This deep observation will finally exploit Chandra's fine spatial resolution to study ISM interfaces on 1--10 pc scales, the full complement of massive stars, and the brightest pre-main sequence stars that trace 25 Myrs of star formation in this incomparable nearby starburst.

R.A. Dec. Target Name Det. Grating Exp.Time

Subject Category: STARS AND WD

Proposal Number: 16200111

Title: HD191612 - constraining the structure of a massive magnetosphere

Type: LP Total Time (ks): 350

PI Name: Yael Naze

Abstract: We propose, through high resolution spectroscopy, to derive the structure of the magnetically confined winds in HD191612, a prototypical magnetic massive star. In such objects, X-rays arise from the strong shocks between stellar wind flows from opposite hemispheres, guided by the field towards the magnetic equator. While X-ray luminosities of magnetic OB stars are now known and fairly well reproduced by models, this is not the case for the structure (position, velocity, temperature) of the magnetospheric plasma, crucially needed for a deep understanding of magnetism at the top of the main sequence. The unique diagnostics provided by HETG will provide the missing information and, together with existing optical and UV observations, enable the full modeling of prototypical confined winds.

R.A. Dec. Target Name Det. Grating Exp. Time (ks)
+20:09:28.60 +35:44:01.30 HD191612 ACIS-S HETG 150.0
+20:09:28.60 +35:44:01.30 HD191612 ACIS-S HETG 200.0

Subject Category: STARS AND WD

Proposal Number: 16200863

Title: The Chandra-Kepler Flare Survey

Type: LP Total Time (ks): 500

PI Name: Jeremy Drake

Abstract: The Kepler K2 mission offers a unique chance to obtain the first simultaneous X-ray and white light (WL) observations of superflares on samples of nearby active, coeval stars. In large solar flares, X-ray emission represents only a few percent of the total energy dissipated, with WL and CME's dominating. For flaring active stars this implies up to 10% of Lbol is expended on flares! Chandra observations of rho Oph, the Pleiades and Praesepe simultaneous with K2 will observe superflares from 10^32-10^36 erg and test solar WL - X-ray relations for active stars. The results are central to flare energy release on stars through time, the impact of stellar flares and activity on protoplanetary disks and exoplanets, and the fundamental efficiency of magnetic dynamos in dissipating energy.

R.A. Dec. Target Name Det. Grating Exp. Time (ks)
+16:27:17.20 -24:34:39.00 Rho Oph Cloud A ACIS-I None 100.0
+03:46:46.00 +24:04:06.00 Pleiades ACIS-I None 200.0
+08:39:50.00 +19:31:41.00 Praesepe ACIS-I None 200.0

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 16500705

Title: Nonuniform expansion and brightening of the youngest Galactic SNR G1.9+0.3

Type: LP Total Time (ks): 400

PI Name: Kazimierz Borkowski

Abstract: We propose a 400-ks observation of the youngest Galactic supernova remnant (SNR) G1.9+0.3, to study its nonuniform expansion and monitor increase in brightness. Expansion along the major axis of G1.9+0.3 has been found to decrease with radius. The longer time baseline should help in understanding these surprising variations in expansion. No other Galactic SNR is brightening. The X-rays are mainly produced as synchrotron radiation from 10 -- 100 TeV electrons, so the magnitude and spatial dependence of the brightening rate have important implications for the physics of particle acceleration and magnetic-field amplification in fast shock waves. G1.9+0.3 is a unique SNR whose continued monitoring should greatly advance our understanding of Type Ia supernovae and nonthermal shock physics.

R.A. Dec. Target Name Det. Grating Exp. Time (ks)
+17:48:45.00 -27:10:00.10 G1.9+0.3 ACIS-S None 400.0

Subject Category: NORMAL GALAXIES: X-RAY POPULATIONS

Proposal Number: 16620755

Title: A Chandra Legacy Survey of the Disk of M31

Type: LP Total Time (ks): 350

PI Name: Benjamin Williams

Abstract: The only other galaxy in the Local Group that resembles our Galaxy is M31. Here we propose to create a Chandra ACIS mosaic of the northern disk of M31, a region examined with exquisite precision with HST. Only with both Chandra and HST can we identify counterparts of HMXBs. The resulting distribution of the luminosities, ages, and secondary star parameters will strictly constrain models of HMXB formation. In addition, we will resolve SNRs and superbubbles in M31, and compare their structure and energetics to those seen in M33 and the Galaxy. We will identify the background AGNs and use them to measure the X-ray absorption properties of the M31 disk. The Chandra, HST, and XMM data will create a legacy for space astronomy that will not be possible to duplicate in our lifetimes.

R.A. Dec. Target Name Det. Grating Exp. Time (ks)
+00:44:18.70 +41:23:28.00 PHAT B6 ACIS-I None 50.0
+00:44:07.90 +41:35:21.70 PHAT B9 ACIS-I None 50.0
+00:45:08.30 +41:31:34.40 PHAT B10 ACIS-I None 50.0
+00:45:30.90 +41:42:34.20 PHAT B14 ACIS-I None 50.0
+00:44:50.10 +41:51:34.40 PHAT B15 ACIS-I None 50.0
+00:46:10.50 +41:57:36.10 PHAT B18 ACIS-I None 50.0
+00:46:19.10 +42:09:20.70 PHAT B21 ACIS-I None 50.0

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 16700470

Title: Uncovering the True Nature of Warm-Absorbing Winds: The Power of the Fe XXII Doublet

Type: LP Total Time (ks): 700

PI Name: Ashley King

Abstract: We propose to observe the Seyfert 1 galaxy, NGC 4051 to securely detect the Fe XXII absorption lines. This doublet will accurately determine the density, mass-outflow rate and the liberated kinetic power for the first time in an X-ray detected, warm-absorbing wind. Currently, wind estimates in AGN fall just short of providing enough material and energy to their bulges to affect its evolution and structure. However, with more accurate density measurements this discrepancy is likely to be resolved. In addition, this study is the last chance to lead the way spectroscopically before Astro-H comes on-line. We request 700 ks with the Chandra HETG to observe the warm-absorbing winds in NGC 4051.

R.A. Dec. Target Name Det. Grating Exp. Time (ks)
+12:03:09.60 +44:31:53.00 NGC 4051 ACIS-S HETG 700.0

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 16700515

Title: An X-ray, UV, and radio probe of the PG 1211+143 inflow-outflow dynamics

Type: LP Total Time (ks): 450

PI Name: Julia Lee

Abstract: We propose for a Chandra HETGS (450ks), HST COS (4 orbits), and JVLA (5 hrs JVLA-A) study of the QSO PG 1211+143. With Chandra, we will measure the kinematics of the ionized wind to establish energetics. Contemporaneous Chandra-HST observations will be necessary for determing thermodynamic stability conditions and wind-driving mechanisms. JVLA observations will enhance the outflow studies by identifying the radio emission (possibly from a jet) associated with PG1211, to tie in with HETGS studies of its ionized wind(s). Strong gravity signatures in PG 1211 using traditional methods and new probes will also be assessed. Existing Chandra LETGS, XMM RGS, Suzaku spectra lack the spectral resolution and S/N to enable a clear picture of the PG1211 inflow-outflow dynamics.

R.A. Dec. Target Name Det. Grating Exp. Time (ks)
+12:14:17.60 +14:03:12.50 PG 1211+143 ACIS-S HETG 450.0

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 16700859

Title: The Rise to Power: Half a Billion Years of Intense AGN Activity in the Merging Cluster Cygnus A

Type: XVP Total Time (ks): 2000

PI Name: Michael Wise

Abstract: As the closest powerful radio galaxy, Cygnus A is the definitive laboratory for studying the radio galaxy physics in dense environments. Cygnus A resides in a cluster currently undergoing a nearly equal mass, major merger. Our proposed Chandra observation will quantify the energy exchange between the radio plasma emitted by the SMBH and the surrounding atmosphere. The Chandra image will also map the jet termination hotspots at high resolution and produce the most accurate measurements of jet energetics in any powerful radio galaxy. Our deep map of the cluster-scale emission will provide a complete record of the AGN power output over the past half billion years and allow us to explore the connection between this activity and the merger itself.

R.A. Dec. Target Name Det. Grating Exp. Time (ks)
+19:59:28.30 +40:44:02.00 Cygnus A - Nucleus ACIS-I None 600.0
+19:59:22.80 +40:44:25.30 Cygnus A - W Hotspot ACIS-I None 600.0
+19:59:32.00 +40:43:40.40 Cygnus A - E Hotspot ACIS-I None 600.0
+19:59:12.60 +40:48:02.40 Cygnus A - Filament ACIS-I None 100.0
+19:58:47.60 +40:53:35.20 Cygnus A - NW Subcluster ACIS-I None 100.0

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 16800528

Title: The Highly Perturbed X-ray Bright Group NGC 5044

Type: LP Total Time (ks): 340

PI Name: Laurence David

Abstract: The NGC 5044 group is the X-ray brightest group in the sky and hosts many small X-ray cavities that were inflated by weak AGN outbursts. The cumulative effect of many weak AGN outbursts may be the dominant reheating mechanism in cooling flows. While AGN feedback probably prevents the bulk of gas from cooling in NGC 5044, the presence of molecular structures, H$\alpha$ filaments, [CII] emission and star formation indicates that at least some gas is able to condense out of the hot phase. The near by 5044 group is the best target for detecting small X-ray cavities with Chandra and investigating the cumulative effect of repeated weak AGN outbursts. The wealth of multi-frequency data also makes NGC 5044 an ideal target for studying gas over a broad range of temperatures in a cooling flow.

R.A. Dec. Target Name Det. Grating Exp. Time (ks)
+13:15:24.00 -16:23:07.00 NGC 5044 ACIS-S None 340.0

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 16800622

Title: Probing the Physics of the ICM in the Dynamically Young Cluster A1367

Type: LP Total Time (ks): 370

PI Name: William Forman

Abstract: We propose a 370 ks ACIS-I observation to measure the surface brightness fluctuations in the core of A1367, a dynamically young and low temperature cluster, to probe the ICM microphysics including fundamental processes such as thermal conduction and viscosity. The key is to extend the dynamic range of the power spectrum and measure the amplitude of fluctuations on scales comparable to (or below) 10 kpc. We also will exploit cross-power-spectra of fluctuations in different energy bands and compare relative amplitudes of perturbations in these bands at different spatial scales to reveal the nature of perturbations, discriminating between adiabatic (e.g. perturbations of the gravitational potential and sound waves) and entropy perturbations.

R.A. Dec. Target Name Det. Grating Exp. Time (ks)
+11:44:44.40 +19:42:04.00 Abell 1367 ACIS-I None 370.0

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 16800690

Title: A MASS-LIMITED SURVEY OF GALAXY CLUSTERS AT 1.2 < z < 1.7: PROBING THE PHYSICS OF THE ICM DURING ITS ASSEMBLY

Type: LP Total Time (ks): 588

PI Name: Michael McDonald

Abstract: We propose to obtain Chandra X-ray observations of a mass-limited sample of 8 galaxy clusters at 1.2 < z < 1.7. This sample complements a recently-completed survey of the 80 most massive SPT-selected clusters at 0.4 < z < 1.2 by extending the survey to the most distant, high-significance clusters detected with the South Pole Telescope (SPT). The addition of 8 clusters at z > 1.2 would allow us to probe galaxy cluster evolution out to the earliest epochs of cluster formation, at an epoch when star formation, cluster-cluster merging, satellite accretion, and AGN activity were all significantly higher than they are today. This unique sample will provide the seeds for follow-up surveys of high-redshift clusters for years to come.

R.A. Dec. Target Name Det. Grating Exp. Time (ks)
+23:41:25.70 -57:24:56.90 SPT-CLJ2341-5724 ACIS-I None 116.0
+06:40:15.60 -51:13:13.40 SPT-CLJ0640-5113 ACIS-I None 89.0
+06:07:35.60 -44:48:11.90 SPT-CLJ0607-4448 ACIS-I None 116.0
+04:59:42.50 -49:47:13.90 SPT-CLJ0459-4947 ACIS-I None 144.0
+03:13:55.40 -53:34:41.20 SPT-CLJ0313-5334 ACIS-I None 123.0

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 16800829

Title: Chandra mapping of the cosmic web converging on the virialization region of Abell 1795

Type: XVP Total Time (ks): 2100

PI Name: Alexey Vikhlinin

Abstract: Detailed observations of the "cosmic melting pot" in the virialization zone of rich galaxy clusters are a fairly new territory for the physics of clusters and the intergalactic medium. The first step has been taken with a deep Chandra study of A133, which has provided a uniquely detailed picture of the Cosmic Web converging onto the cluster virial radius and demonstrated that Chandra can probe to fainter surface brightness levels than any other X-ray observatory now operating. Many of the results from the A133 observation are potentially game-changers for our understanding of the virialization region and its proper modeling. We now need to follow this up with a similarly deep observation of at least one more cluster.

R.A. Dec. Target Name Det. Grating Exp. Time (ks)
+13:48:52.30 +26:35:36.20 Abell 1795 outskirts ACIS-I None 2100.0

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 16900937

Title: Black Hole Fingerprints from Cosmic Dawn to Cosmic Noon

Type: XVP Total Time (ks): 1250

PI Name: Guenther Hasinger

Abstract: A tantalizing large-scale correlation signal between the residual Cosmic X-ray and IR backgrounds observed in the EGS may be a fingerprint of the first BH population emerging from the Dark Ages as progenitors of SMBH, whose obscured growth is reflected in the XRB. We propose a 1.25Ms Chandra survey of the UDS, the second field observed by Spitzer with comparable depth and homogeneity, but better geometry. This will yield (1) an improvement by a factor 2.5 of the SNR (to about 8 sigma) at the angular scales of ~1000'', crucial to estimate the nature and epoch of the X-ray sources correlated with the CIB; and (2) increasing the number of reliably identified luminous Compton-thick AGN to ~100 (2x), yielding the first robust X-ray evolution for CTAGN alone in 3 redshift bins.

R.A. Dec. Target Name Det. Grating Exp. Time (ks)
+02:17:34.10 -05:10:14.40 UDS ACIS-I None 1250.0