Chandra X-Ray Observatory
	(CXC)

Chandra Large, Very Large and X-ray Visionary Projects

NORMAL GALAXIES DIFFUSE EMISSION & SURVEYS

Proposal NumberSubject CategoryPI NameTypeTime (ks)Title
02600758NORMAL GALAXIESPrestwichLP547THE X-RAY POINT SOURCE POPULATION IN SPIRAL GALAXIES
03600940NORMAL GALAXIESBaganoffLP510MONITORING THE EXTREME X-RAY FLARING OF SAGITTARIUS A* AND A DEEP SURVEY OF THE CENTRAL 40 PC OF THE GALAXY
05600587NORMAL GALAXIESKuntzVLP1000An Ultra-Deep Study of M101
07610889NORMAL GALAXIES: DIFFUSE EMISSIONSasakiVLP1400The Chandra ACIS Survey of M33 (ChASeM33): A Deep Survey of the Nearest Face-on Spiral Galaxy
07620395NORMAL GALAXIES: X-RAY POPULATIONSFabbianoVLP1245A Chandra legacy program: deep study of LMXB populations
08620985NORMAL GALAXIES: X-RAY POPULATIONSChuLP300Massive Star Formation and Energy Feedback in the Starburst Region N11
09620513NORMAL GALAXIES: X-RAY POPULATIONSJenkinsLP782.8Galaxies across the Octaves: A Chandra Legacy Survey of SINGS Galaxies
10610785NORMAL GALAXIES: DIFFUSE EMISSIONStricklandLP480Wide, deep and sharp: A comprehensive observation of M82, the exemplar of starburst activity
11620601NORMAL GALAXIES: X-RAY POPULATIONSPrestwichLP286.44Ultra-Luminous x-Ray Sources in the Most Metal-Poor Galaxies
11620915NORMAL GALAXIES: X-RAY POPULATIONSGalloLP564.2Accretion onto nuclear black holes in early type galaxies: comparing field vs. clusters
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
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)
13620807NORMAL GALAXIES: X-RAY POPULATIONSBaganoffXVP3000Chandra HETG Ultra-deep Gratings Spectroscopy of Sgr A* (CHUGSS)

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: 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: 510

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: 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: 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: 1245

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: 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: NORMAL GALAXIES: X-RAY POPULATIONS

Proposal Number: 09620513

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

Type: LP Total Time: 782.8

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: 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: NORMAL GALAXIES: X-RAY POPULATIONS

Proposal Number: 11620601

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

Type: LP Total Time: 286.44

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: 564.2

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: 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: 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: 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
Smithsonian Institute Smithsonian Institute

The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.   Email:   cxchelp@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2024. All rights reserved.