Prompt and Delayed High-Energy Emission from Cosmological Gamma-Ray Bursts
نویسندگان
چکیده
In the cosmological blast-wave model for gamma ray bursts (GRBs), high energy ( > ∼10 GeV) γ rays are produced either through Compton scattering of soft photons by ultrarelativistic electrons, or as a consequence of the acceleration of protons to ultrahigh energies. We describe the spectral and temporal characteristics of high energy γ rays produced by both mechanisms, and discuss how these processes can be distinguished through observations with low-threshold Čerenkov telescopes or GLAST. We propose that Compton scattering of starlight photons by blast wave electrons can produce delayed flares of GeV – TeV radiation.
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