Fermi Gamma-ray Space Telescope

Temporal and spectral properties of bright BGO GRBs detected by Fermi

Elisabetta Bissaldi
Francesco Longo, Enrico Peretti, on behalf of the Fermi-LAT Collaboration

Abstract:

We present results of an analysis of a sample of 300 bright Gamma-Ray Bursts (GRBs) detected by Fermi-GBM up to more than 1 MeV, which were collected during 6 years of Fermi operations. In particular, we focus on the GRB durations and spectral properties over several energy bands of the prompt emission of a subsample of bright GRBs detected up to 10 MeV by Fermi-GBM and, when possible, up to 1 GeV by Fermi-LAT, thus expanding the duration-energy relationship in the GRB light curves to high energies. A comparison of the results obtained for these GRBs using the previous Pass 7 with the new Pass 8 Fermi-LAT event selection and instrument response function will be also shown.