Gamma Ray Bursts. Progenitors, accretion in the central engine, jet acceleration mechanisms

Abstract

Agnieszka Janiuk, Konstantinos Sapountzis the neutron-rich ejecta launched from the accreting torus in the GRB engine with the production of the unstable heavy isotopes produced in the so called rprocess. The radioactive decay of these isotopes is the source of additional emission observed in Optical/Infrared wavelengths and was confirmed to be found in a number of sources.