Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-05-11
Astrophys.J.668:392-399,2008
Astronomy and Astrophysics
Astrophysics
19 pages, 5 figures, ApJ, in press
Scientific paper
10.1086/521045
We calculate the GeV spectra of GRB afterglows produced by inverse Compton scattering of the sub-MeV emission of these objects. We improve on earlier treatments by using refined afterglow parameters and new model developments motivated by recent Swift observations. We present time-dependent GeV spectra for standard, constant parameter models, as well as for models with energy injection and with time-varying parameters, for a range of burst parameters. We evaluate the limiting redshift to which such afterglows can be detected by the GLAST LAT, as well as AGILE.
Gou Li-Jun
Meszaros Peter
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