THEFERMIGAMMA-RAY BURST MONITOR

Charles Meegan, Giselher Lichti, P. N. Bhat, Elisabetta Bissaldi, Michael S. Briggs, Valerie Connaughton, Roland Diehl, Gerald Fishman, Jochen Greiner, Andrew S. Hoover, Alexander J. van der Horst, Andreas von Kienlin (+9 others)
2009 Astrophysical Journal  
The Gamma-Ray Burst Monitor (GBM) will significantly augment the science return from the Fermi Observatory in the study of Gamma-Ray Bursts (GRBs). The primary objective of GBM is to extend the energy range over which bursts are observed downward from the energy range of the Large Area Telescope (LAT) on Fermi into the hard X-ray range where extensive previous data exist. A secondary objective is to compute burst locations on-board to allow re-orientiong the spacecraft so that the LAT can
more » ... e delayed emission from bright bursts. GBM uses an array of twelve sodium iodide scintillators and two bismuth germanate scintillators to detect gamma rays from ~8 keV to ~40 MeV over the full unocculted sky. The on-board trigger threshold is ~0.7 photons/cm2/s (50-300 keV, 1 s peak). GBM generates on-board triggers for ~250 GRBs per year.
doi:10.1088/0004-637x/702/1/791 fatcat:afwvrersnraoflk25lzkz5vwl4