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A complete relativistic ionized accretion disc in Cygnus X-1

Young, A. J.; Fabian, A. C.; Ross, R. R. +1 more

The galactic black hole candidate Cygnus X-1 is observed to be in one of two X-ray spectral states: either the low/hard (low soft X-ray flux and a flat power-law tail) or high/soft (high blackbody-like soft X-ray flux and a steep power-law tail) state. The physical origin of these two states is unclear. We present here a model of an ionized accret…