The Fermi Gamma Ray Burst Monitor (GBM) enhances the science return from the Fermi mission by roviding observations of GRBs in the energy range 8 keV to 40 MeV, thereby extending GRB spectra three decades elow the Large Area Telescope (LAT) threshold of ∼20 MeV. GBM employs twelve sodium iodide scintillation etectors and two bismuth germinate scintillation detectors to observe the full unocculted sky. The flight software ocalizes GRBs and can generate a request to autonomously repoint the spacecraft to place a burst within the LAT field of iew. 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 ther gamma-ray transients. © 2009 American Institute of Physics.
On-Orbit Performance of the Fermi Gamma-Ray Burst Monitoi / 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. (Intervento presentato al convegno 6th Huntsville Symposium on Gamma-Ray Bursts tenutosi a Huntsville, AL nel October 20-23, 2008) [10.1063/1.3155975].
On-Orbit Performance of the Fermi Gamma-Ray Burst Monitoi
Bissaldi, Elisabetta;
2009-01-01
Abstract
The Fermi Gamma Ray Burst Monitor (GBM) enhances the science return from the Fermi mission by roviding observations of GRBs in the energy range 8 keV to 40 MeV, thereby extending GRB spectra three decades elow the Large Area Telescope (LAT) threshold of ∼20 MeV. GBM employs twelve sodium iodide scintillation etectors and two bismuth germinate scintillation detectors to observe the full unocculted sky. The flight software ocalizes GRBs and can generate a request to autonomously repoint the spacecraft to place a burst within the LAT field of iew. 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 ther gamma-ray transients. © 2009 American Institute of Physics.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
