Radiation Processes in GRBs. Prompt Emission

Details Radiation Processes in GRBs. Prompt Emission Radiation Processes in GRBs. Prompt Emission

2004-10-20

arxiv.org/abs/astro-ph/0410490v1

Astronomy and Astrophysics

Astrophysics

6 pages, 5 figures. Review talk at GRB-03 conference (Santa Fe)

Scientific paper

10.1063/1.1810794

A substantial fraction of prompt GRB spectra have soft spectral indexes exceeding the maximum allowed by the synchrotron model alpha_{max}=-2/3. Some spectra also exhibit very sharp break at E_p, inconsistent with the smooth synchrotron spectra. These facts pose a serious problem for the ``optically thin synchrotron'' interpretation of the prompt emission. We review various models suggested in order to resolve this puzzle.

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