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ASTROPHYSICAL IMPLICATIONS OF THE BINARY BLACK HOLE MERGER GW150914
The discovery of the gravitational-wave source GW150914 with the Advanced LIGO detectors provides the first observational evidence for the existence of binary black-hole systems that inspiral andExpand
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A Long, Hard Look at the Low/Hard State in Accreting Black Holes
We present the first results of coordinated multiwavelength observations of the Galactic black hole GX 339-4 in a canonical low/hard state, obtained during its 2004 outburst. XMM-Newton observed theExpand
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The evolution of the timing properties of the black-hole transient GX 339-4 during its 2002/2003 outburst
We present the results of the timing and color analysis of more than two hundred RXTE/PCA observations of the bright black-hole transient GX 339-4 obtained during its 2002/2003 outburst. TheExpand
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Simultaneous Chandra and RXTE Spectroscopy of the Microquasar H1743–322: Clues to Disk Wind and Jet Formation from a Variable Ionized Outflow
We observed the bright phase of the 2003 outburst of the Galactic black hole candidate H1743-322 in X-rays simultaneously with Chandra and RXTE on four occasions. The Chandra HETGS spectra revealExpand
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Chandra/High energy transmission grating spectrometer spectroscopy of the galactic black hole GX 339-4: a relativistic iron emission line and evidence for a Seyfert-like warm absorber
We observed the Galactic black hole GX 339-4 with the Chandra High Energy Transmission Grating Spectrometer (HETGS) for 75 ks during the decline of its 2002-2003 outburst. The sensitivity of thisExpand
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STELLAR-MASS BLACK HOLE SPIN CONSTRAINTS FROM DISK REFLECTION AND CONTINUUM MODELING
Accretion disk reflection spectra, including broad iron emission lines, bear the imprints of the strong Doppler shifts and gravitational redshifts close to black holes. The extremity of these shiftsExpand
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Chandra Observation of the Globular Cluster NGC 6440 and the Nature of Cluster X-Ray Luminosity Functions
As part of our campaign to determine the nature of the various source populations of the low-luminosity globular cluster X-ray sources, we have obtained a Chandra X-Ray Observatory ACIS-S3 image ofExpand
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Measuring the spin of GRS 1915+105 with relativistic disk reflection
GRS 1915+105 harbors one of the most massive known stellar black holes in the Galaxy. In 2007 May, we observed GRS 1915+105 for ∼117 ks in the low/hard state using Suzaku. We collected and analyzedExpand
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The Accretion Disk Wind in the Black Hole GRO J1655-40
We report on simultaneous ChandraHETGS andRXTEobservations of the transient stellar-mass black hole GRO J1655� 40, made during its 2005 outburst. Chandra reveals a line-rich X-ray absorption spectrumExpand
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A SWIFT SURVEY OF ACCRETION ONTO STELLAR-MASS BLACK HOLES
We present a systemic analysis of all of the stellar-mass black hole binaries (confirmed and candidate) observed by the Swift observatory up to 2010 June. The broad Swift bandpass enables a trace ofExpand
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