Schedule Feb 09, 2006
Very High Energy Emission from GRBs
Charles Dermer (NRL)

We describe leptonic and hadronic processes in GRB blast waves that lead to the production of multi-MeV photons. Gamma rays emitted by leptons are likely to be synchrotron self-Compton emission, though external Compton photons could be important in some cases. Cascades associated with photohadronic processes are probably the most important source of hadronic gamma rays. Cosmic-ray production by GRBs could explain the origin of high-energy cosmic rays. High-energy neutrinos would be the most clearcut prediction of this scenario, though gamma rays associated with hadronic processes would have distinct signatures compared to those emitted by leptons.

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