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X-ray reflection in a stellar-mass black hole binary system

R.R. Ross & A.C. Fabian, Holy Cross College & IoA

We extend our investigation of the reflection that can be expected from an accretion disc around a black hole of stellar mass. In addition to the variation in the strength and spectral shape of the illumination and the disc temperature, the density of the illuminated disc atmosphere is also allowed to vary. Thus the effective heating/ionization strength of the radiation emerging from the disc below varies, with important effects on the emergent X-ray spectrum.