Measuring Black Hole Spin Using X-Ray Reflection Spectroscopy
نویسندگان
چکیده
منابع مشابه
X-ray reflection in accreting stellar-mass black hole systems
The X-ray spectra of accreting stellar-mass black hole systems exhibit spectral features due to reflection, especially broad iron Kα emission lines. We investigate the reflection by the accretion disc that can be expected in the high/soft state of such a system. First, we perform a self-consistent calculation of the reflection that results from illumination of a hot, inner portion of the disc w...
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All prior work on measuring the spins of stellar-mass black holes via the X-ray continuum-fitting method has relied on the use of weakly-Comptonized spectra obtained in the thermal dominant state. Using a self-consistent Comptonization model, we show that one can analyze spectra that exhibit strong power-law components and obtain values of the inner disk radius, and hence spin, that are consist...
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The spin of Cygnus X-1 is measured by fitting reflection models to Suzaku data covering the energy band 0.9–400 keV. The inner radius of the accretion disc is found to lie within 2 gravitational radii (rg = GM/c2), and a value of 0.97+0.014 −0.02 is obtained for the dimensionless black hole spin. This agrees with recent measurements using the continuum fitting method by Gou et al. and of the br...
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ژورنال
عنوان ژورنال: Space Science Reviews
سال: 2013
ISSN: 0038-6308,1572-9672
DOI: 10.1007/s11214-013-0006-6