Black Hole Spin in X-Ray Binaries: Observational Consequences

  title={Black Hole Spin in X-Ray Binaries: Observational Consequences},
  author={S. N. Zhang and Wei Cui and Wan Chen},
  journal={The Astrophysical Journal},
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 with theoretical flux distribution from the surface of a thin disk surrounding a Kerr black hole, the observed X-ray properties of the Galactic superluminal jet sources, GRO J1655-40 and GRS 1915+105, strongly suggest that each contains a black hole spinning rapidly in the same direction as the accretion disk. We show, however, that some… 

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