526 citations · 2.8k across the 86 of their papers we have counts for
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Milli-second Oscillations in the Persistent and Bursting Flux of Aql X-1 During an Outburst
W. Zhang, K. Jahoda, R. L. Kelley +2
The Rossi X-Ray Timing Explorer observed the soft X-Ray transient Aql X-1 during its outburst in February and March 1997. We report the discovery of quasi-periodic oscillations (QP…
Spectral State Transitions in Aql X-1: Evidence for `Propeller' Effects
S. N. Zhang, W. Yu, W. Zhang
Aql X-1 is a soft X-ray transient source and emits type I X-ray bursts. A spectral state transition was observed with RXTE during its outburst decay in February and March 1997. Its…
A Sequence of Declining Outbursts from GX339-4
B. C. Rubin, B. A. Haron, W. S. Paciesas +3
The flux and spectrum of the black hole candidate GX339-4 has been monitored by the Burst and Transient Source Experiment (BATSE) on the Compton Gamma-ray Observatory (CGRO) since…
Evidence for Frame-Dragging Around Spinning Black Holes in X-Ray Binaries
Wei Cui, S. N. Zhang, Wan Chen
In the context of black hole spin in X-ray binaries, we propose that certain type of quasi-period oscillations (QPOs) observed in the light curves of black hole binaries (BHBs) are…
Galactic Black Hole Binaries: Multifrequency Connections
S. N. Zhang, I. F. Mirabel, B. A. Harmon +4
We review the recent multifrequency studies of galactic black hole binaries, aiming at revealing the underlying emission processes and physical properties in these systems. The opt…
Black Hole Spin in X-Ray Binaries: Observational Consequences
S. N. Zhang, Wei Cui, Wan Chen
We discuss the observational consequences of black hole spin in X-ray binaries within the framework of the standard thin accretion disk model. When compared to theoretical flux dis…
Temporal Properties of Cygnus X-1 During the Spectral Transitions
Wei Cui, S. N. Zhang, W. Focke +1
We report the results from our timing analysis of 15 RXTE observations of Cygnus X-1 throughout its 1996 spectral transitions. The entire period can be divided into 3 distinct phas…
Discovery of a non-blazar gamma-ray transient near the Galactic plane: GRO J1838-04
M. Tavani, R. Mukherjee, J. R. Mattox +6
We report the discovery of a remarkable gamma-ray transient source near the Galactic plane, GRO J1838-04. This source was serendipitously discovered by EGRET in June 1995 with a pe…
The 1996 Soft State Transitions of Cygnus X-1
S. N. Zhang, W. Cui, B. A. Harmon +3
We report continuous monitoring of Cygnus X-1 in the 1.3 to 200 keV band using ASM/RXTE and BATSE/CGRO for about 200 days from 1996 February 21 to 1996 early September. During this…