Gamma-ray flares from black hole coronae

TL;DR

This paper models high-energy gamma-ray flares from black hole coronae by simulating non-thermal particle interactions and solving transport equations, predicting electromagnetic outputs including photon annihilation effects.

Contribution

It introduces a comprehensive time-dependent model of particle injection and interactions in black hole coronae, accounting for photon annihilation with early-type donor stars.

Findings

Predicted spectral energy distributions match observed flare characteristics.

Identified significant effects of photon annihilation in systems with early-type stars.

Provided detailed predictions of electromagnetic emissions from black hole coronae.

Abstract

We present results of a study of non-thermal, time-dependent particle injection in a corona around an accreting black hole. We model the spectral energy distribution of high-energy flares in this scenario. We consider particle interactions with magnetic, photon and matter fields in the black hole magnetosphere. Transport equations are solved for all species of particles and the electromagnetic output is predicted. Photon annihilation is taken into account for the case of systems with early-type donor stars.