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Gamma-ray bursts offer a rather unique window on the fundamental astrophysics of particle acceleration. Sources of high-energy gamma rays, they are also likely sources of cosmic rays, possibly of the so-called ultra-high energy cosmic rays, and they may well turn out to be the strongest sources of high energy neutrinos. Through the interaction of their outflow with the circum-burst medium, these explosions...
The principal paradigm for gamma-ray bursts (GRB) suggest that the prompt transient gamma-ray signal arises from multiple shocks internal to the relativistic expansion. This paper illustrates some properties of diffusive acceleration at relativistic shocks that pertain to GRB models, providing interpretation of the BATSE/EGRET data. Using a standard Monte Carlo simulation, computations of the spectral...
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