Physics
Scientific paper
Apr 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999head....4.1702b&link_type=abstract
American Astronomical Society, HEAD meeting #4, #17.02; Bulletin of the American Astronomical Society, Vol. 31, p.717
Physics
Scientific paper
The Gamma-ray Large Area Space Telescope (GLAST) will incorporate high sensitivity, large field of view, and precision tracker technology, providing arc minute localizations of gamma-ray bursts (GRBs) and exploring GRB physics up to 100 GeV. We have performed GLAST simulations based on a GRB fluence distribution scaled from the BATSE GRB peak flux and duration samples, and on spectral indices similar to the EGRET GRB sample. Results indicate that GLAST will detect and image approximately 200 GRBs per year, with sensitivity to 100 GeV for 20 bursts. Localizations for 100 bursts will have one-sigma diameters less than 10 arc minutes, enabling counterpart searches at longer wavelengths. Simple assumptions about the GRB flux temporal distribution at supra GeV energies indicate that GLAST should easily detect energy- and distance-dependent dispersion (Amelino-Camelia et al. 1998, Nature 393, p. 763) expected from Quantum Gravity (QG) in less than one year's observations. Definitive attribution to QG will require correlation of GRB distances with the expected temporal and energetic signatures.
Bonnell Jerry T.
Norris Jay P.
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