Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-09-03
Astronomy and Astrophysics
Astrophysics
5 pages with 9 figures, accepted for publication in MNRAS
Scientific paper
10.1111/j.1365-2966.2007.12339.x
The X-ray spectra of accreting stellar-mass black hole systems exhibit spectral features due to reflection, especially broad iron K alpha 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 with its atmosphere in hydrostatic equilibrium. Then we present reflection spectra for a range of illumination strengths and disc temperatures under the assumption of a constant-density atmosphere. Reflection by a hot accretion disc differs in important ways from that of a much cooler disc, such as that expected in an active galactic nucleus.
Fabian Andrea C.
Ross Ronald R.
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