A Chandra Survey of Supermassive Black Holes with Dynamical Mass Measurements
dc.contributor.author | Gültekin, Kayhan | en_US |
dc.contributor.author | Cackett, Edward M. | en_US |
dc.contributor.author | Miller, Jon M. | en_US |
dc.contributor.author | Di Matteo, Tiziana | en_US |
dc.contributor.author | Markoff, Sera | en_US |
dc.contributor.author | Richstone, Douglas O. | en_US |
dc.date.accessioned | 2013-06-28T15:25:35Z | |
dc.date.available | 2013-06-28T15:25:35Z | |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | Gültekin, Kayhan; Cackett, Edward M.; Miller, Jon M.; Di Matteo, Tiziana; Markoff, Sera; Richstone, Douglas O. (2012). "A Chandra Survey of Supermassive Black Holes with Dynamical Mass Measurements." The Astrophysical Journal 749(2): 129. <http://hdl.handle.net/2027.42/98553> | en_US |
dc.identifier.uri | http://stacks.iop.org/0004-637X/749/i=2/a=129 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/98553 | |
dc.description.abstract | We present Chandra observations of 12 galaxies that contain supermassive black holes (SMBHs) with dynamical mass measurements. Each galaxy was observed for 30 ks and resulted in a total of 68 point-source detections in the target galaxies including SMBH sources, ultraluminous X-ray sources (ULXs), and extragalactic X-ray binaries. Based on our fits of the X-ray spectra, we report fluxes, luminosities, Eddington ratios, and slope of the power-law spectrum. Normalized to the Eddington luminosity, the 2-10 keV band X-ray luminosities of the SMBH sources range from 10 –8 to 10 –6 , and the power-law slopes are centered at ~2 with a slight trend toward steeper (softer) slopes at smaller Eddington fractions, implying a change in the physical processes responsible for their emission at low accretion rates. We find 20 ULX candidates, of which 6 are likely (>90% chance) to be true ULXs. The most promising ULX candidate has an isotropic luminosity in the 0.3-10 keV band of 1.0 +0.6 – 0.3 × 10 40 erg s –1 . | en_US |
dc.publisher | IOP Publishing | en_US |
dc.title | A Chandra Survey of Supermassive Black Holes with Dynamical Mass Measurements | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/98553/1/0004-637X_749_2_129.pdf | |
dc.identifier.doi | 10.1088/0004-637X/749/2/129 | en_US |
dc.identifier.source | The Astrophysical Journal | en_US |
dc.owningcollname | Physics, Department of |
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