Fermi Gamma-ray Space Telescope

Catalog of Isolated Emission Episodes in Gamma-Ray Bursts from Fermi, Swift and BATSE

M. Charisi
S. Marka, I. Bartos

Abstract:

The temporal profiles of the prompt emission in Gamma-Ray Bursts (GRBs) are very diverse. Several GRBs show distinct emission episodes, separated with quiescent intervals during which the gamma-ray flux falls to the background level. We present a catalog of long GRBs with isolated emission episodes from a systematic search in the main GRB catalogs (Fermi, Swift and BATSE). The properties of the events prior and after the main emission (the event with the higher peak flux) are statistically similar, possibly indicating a common origin. In several GRBs, the emission extends far beyond T90, which may have significant consequences for the identification of non-electromagnetic counterparts.