Radiation from hot accretion flows onto black holes

Abstract

The hot accretion flows upon black holes are usually optically thin two-temperature plasmas in which electrons can achieve temperatures up to , producing radiation via synchrotron, bremsstrahlung and inverse Compton, and the ions can reach temperatures up to . The hottest ions might produce gamma emission through proton-proton interactions. In this work, we considered a particular model of a hot accretion flow and estimate the spectral energy distributions produced by both species of particles.