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UAH PHYSICS COLLOQUIUM Radiation Processes in Gamma Ray Bursts by Rob Preece 23 October 2001 Gamma-ray bursts, now known to originate from cosmological distances, are some of the most powerful and energetic astrophysical radiation sources. They are very efficient, since they put out most of this emission at high energies. Several mechanisms that may be important in the production of radiation in GRBs include synchrotron, pair production and annihilation, inverse Compton, and thermal emission. I will use different stages in the current understanding of burst evolution to illustrate the many processes that are likely to occur.
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