Thermal emission in the prompt phase of gamma-ray bursts

Details Thermal emission in the prompt phase of gamma-ray bursts Thermal emission in the prompt phase of gamma-ray bursts

2005-04-25

arxiv.org/abs/astro-ph/0504539v1

Astronomy and Astrophysics

Astrophysics

Talk given at the 22nd Texas Symposium on Relativistic Astrophysics and Cosmology, December 13-17, 2004, Stanford University

Scientific paper

I discuss the interpretation of the prompt phase in gamma-ray bursts as being dominated by quasi-thermal emission, rather than by synchrotron emission. Such an interpretation gives a more natural explanation of (i) the observed variety of spectral shape and spectral evolution, (ii) the observed narrowness of the distribution of peak energies, as well as (iii) the observed correlations between peak energy and luminosity. However, the physical setting that could produce such a scenario is not yet clear.

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