Properties of the two-temperature corona model for active galactic nuclei and galactic black hole X-ray Binaries

摘要

We study in detail the properties of the accreting corona model for active galactic nuclei and galactic black hole X-ray Binaries. In this model the fraction of the energy liberated in the corona at a given radius is calculated from the global parameters of the model (mass of the central object, accretion rate and viscosity parameter) and it appears to be a strong function of the radius. The model predicts the relative decrease of the coronal hard X-ray emission with an increase of the accretion rate. The presented description of disc/corona interaction forms a basis for further studies of disc disruption mechanism.