CONFIRMATION VIA THE CONTINUUM-FITTING METHOD THAT THE SPIN OF THE BLACK HOLE IN CYGNUS X-1 IS EXTREME

CONFIRMATION VIA THE CONTINUUM-FITTING METHOD THAT THE SPIN OF THE BLACK HOLE IN CYGNUS X-1 IS EXTREME

In Gou et al., we reported that the black hole primary in the X-ray binary Cygnus X-1 is a near-extreme Kerr black hole with a spin parameter a * > 0.95 (3σ). We confirm this result while setting a new and more stringent limit: a * > 0.983 at the 3σ (99.7%) confidence level. The earlier work,...

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Bibliographic Details
Main Authors: Gou, Lijun (Author), McClintock, Jeffrey E. (Author), Steiner, James F. (Author), Reid, Mark J. (Author), Orosz, Jerome A. (Author), Narayan, Ramesh (Author), Hanke, Manfred (Author), Garcia, Javier A. (Author), Remillard, Ronald A (Author)
Other Authors: MIT Kavli Institute for Astrophysics and Space Research (Contributor), Remillard, Ronald Alan (Contributor)
Format: Article
Language:English
Published: Institute of Physics/American Astronomical Society, 2015-02-18T21:57:19Z.
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