2.4k citations · 15.8k across the 111 of their papers we have counts for
6 papers · 1 filter
A Soft X-ray Transient in the M31 Bulge
Benjamin F. Williams, Michael R. Garcia, Jeffrey E. McClintock +2
We have examined a probable soft X-ray transient source in the M31 bulge at R.A.=0:42:41.814 +/- 0.08", Dec. = 41:16:35.86 +/- 0.07". On the three occasions we observed the source,…
Chandra and Hubble Study of a New Transient X-ray Source in M31
Benjamin F. Williams, Michael R. Garcia, Jeffrey E. McClintock +2
We present X-ray and optical observations of a new transient X-ray source in M31 first detected 23-May-2004 at R.A.=00:43:09.940 +/- 0.65'', Dec.=41:23:32.49 +/- 0.66''. The X-ray…
Estimating the Spin of Stellar-Mass Black Holes via Spectral Fitting of the X-ray Continuum
Rebecca Shafee, Jeffrey E. McClintock, Ramesh Narayan +3
We fit X-ray spectral data in the thermal dominant or high soft state of two dynamically confirmed black holes, GRO J1655-40 and 4U 1543-47, and estimate the dimensionless spin par…
On the binary nature of 1RXS J162848.1-415241
M. A. P. Torres, M. R. Garcia, D. Steeghs +1
We present spectroscopy of the optical counterpart to 1RXS J162848.1-41524, also known as the microquasar candidate MCQC J162847-4152. All the data indicate that this X-ray source…
Optical Constraints on an X-ray Transient Source in M31
Benjamin F. Williams, Michael R. Garcia, Frank A. Primini +2
We have detected a transient X-ray source in the M31 bulge through a continuing monitoring campaign with the Chandra ACIS-I camera. The source was detected at R.A.=00:42:33.428 +/-…
An X-ray Transient and Optical Counterpart in the M31 Bulge
Benjamin F. Williams, Michael R. Garcia, Jeffrey E. McClintock +3
We have obtained snapshot images of a transient X-ray source in M31 from Chandra ACIS-I and the Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS). The Chandra position…