VizieR Online Data Catalog: The second Fermi/GBM GRB catalog (4yr) (von Kienlin+, 2014)

The Fermi Gamma-ray Burst Monitor (GBM), the secondary instrument on board the Fermi Gamma-ray Space Telescope, launched on 2008 June 11, is now operating successfully in space since five years. The GBM instrument extends the energy range of the main instrument, the Large Area Telescope (LAT; 30MeV-300GeV) down to the soft gamma-ray and X-ray energy range (8keV-40MeV). In the first four years of operation since triggering was enabled on 2008 July 12, GBM has triggered 2126 times on a variety of transient events: 954 of these are classified as GRBs (in one case the same GRB triggered GBM twice).

The location of a GRB is calculated by comparing the measured individual detector counting rates with a lookup table (LUT), containing a list of relative detector rates for a grid of simulated sky locations. The on-board and on-ground LUTs have resolutions of 5° and 1°, respectively. With this method the limiting accuracy is approximately 8° for on-board locations and approximately 4° for on-ground locations. A detailed investigation of the GBM location accuracy can be found in Connaughton, V., Briggs, M. S., & Goldstein, A. et al. 2014 (ApJS, submitted).

(5 data files).