The Fermi Gamma Ray Burst Monitor (GBM) enhances the science return from the Fermi mission by providing observations of GRBs in the energy range 8 keV to 40 MeV, thereby extending GRB spectra three decades below the Large Area Telescope (LAT) threshold of ~20 MeV. GBM employs twelve sodium iodide scintillation detectors and two bismuth germinate scintillation detectors to observe the full unocculted sky. The flight software localizes GRBs and can generate a request to autonomously repoint the spacecraft to place a burst within the LAT field of view. GBM has a trigger threshold of 0.74 photons-cm-2-s-1 and triggers on ~260 bursts per year, as well as a variety of other gamma-ray transients.
On-Orbit Performance of the Fermi Gamma-Ray Burst Monitor / Meegan, Charles; Bhat, P. N.; Bissaldi, Elisabetta; Briggs, Michael; Connaughton, Valerie; Diehl, Roland; Fishman, Gerald; Greiner, Jochen; Hoover, ; Andrew, S.; van der, Horst; Alexander, ; Von, Kienlin; Andreas, Kippen; R., Marc; Kouveliotou, Chryssa; Lichti, Giselher; Paciesas, William; Preece, Robert; Steinle, Helmut; Wallace, ; Mark, S.; Wilson, Hodge; Colleen,. - STAMPA. - 1133:(2009), pp. 7-11. ( GAMMA‐RAY BURST: Sixth Huntsville Symposium Huntsville (Alabama) 20–23 October 2008) [10.1063/1.3155975].
On-Orbit Performance of the Fermi Gamma-Ray Burst Monitor
BISSALDI, ELISABETTA;
2009-01-01
Abstract
The Fermi Gamma Ray Burst Monitor (GBM) enhances the science return from the Fermi mission by providing observations of GRBs in the energy range 8 keV to 40 MeV, thereby extending GRB spectra three decades below the Large Area Telescope (LAT) threshold of ~20 MeV. GBM employs twelve sodium iodide scintillation detectors and two bismuth germinate scintillation detectors to observe the full unocculted sky. The flight software localizes GRBs and can generate a request to autonomously repoint the spacecraft to place a burst within the LAT field of view. GBM has a trigger threshold of 0.74 photons-cm-2-s-1 and triggers on ~260 bursts per year, as well as a variety of other gamma-ray transients.Pubblicazioni consigliate
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