2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/13823Despite that gamma-ray bursts is a phenomenon quite different from accreting compact objects, it could be that their hard X-ray emission is associated with a very similar mechanism of energy dissipation. In both cases, we could deal with reconnection of a turbulent magnetic field with intensive e+e- pair production and quasi-thermal Comptonization.15 pages; Invited review at the workshop "High Energy Processes in Accreting Black Holes", eds. J. Poutanen and R. Svensson, ASP Conf. Series, Vol. 161, p. 277Astrophysicstext