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, C., Bhat, P.N., Bissaldi, E., Briggs, M., Connaughton, V., Diehl, R., Fishman, G., Greiner, J., Hoover, ., Andrew, S., van der, H., Alexander, ., Von, K., Andreas, K., R., M., Kouveliotou, C., Lichti, G., Paciesas, W., Preece, R., Steinle, H., et al.. - 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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