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Abstract: The Gamma-Ray Burst Monitor GBM will significantly augment the sciencereturn from the Fermi Observatory in the study of Gamma-Ray Bursts GRBs. Theprimary objective of GBM is to extend the energy range over which bursts areobserved downward from the energy range of the Large Area Telescope LAT onFermi into the hard X-ray range where extensive previous data exist. Asecondary objective is to compute burst locations on-board to allowre-orientiong the spacecraft so that the LAT can observe delayed emission frombright bursts. GBM uses an array of twelve sodium iodide scintillators and twobismuth germanate scintillators to detect gamma rays from ~8 keV to ~40 MeVover the full unocculted sky. The on-board trigger threshold is ~0.7photons-cm2-s 50-300 keV, 1 s peak. GBM generates on-board triggers for ~250GRBs per year.



Author: Charles Meegan, Giselher Lichti, P. N. Bhat, Elisabetta Bissaldi, Michael S. Briggs, Valerie Connaughton, Roland Diehl, Gerald Fi

Source: https://arxiv.org/



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