A Characteristic Wind Signature in Prompt GRB Afterglows

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  • 22 August 2003
Abstract
We discuss the self-absorption effects in the prompt emission from the reverse shock in GRB afterglows that occur in the wind environment of a massive stellar progenitor. We point out that the higher self-absorption frequency in a wind environment implies a hump in the reverse shock emission spectrum and a more complex optical/IR light curve behavior than previously thought. We discuss a possible new diagnostic to test for the presence of a wind environment, and to provide constraints on the progenitor wind mass loss and the burst parameters.

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