Synchrotron Radiation as the Source of GRB Spectra, Part I: Theory

Details Synchrotron Radiation as the Source of GRB Spectra, Part I: Theory Synchrotron Radiation as the Source of GRB Spectra, Part I: Theory

1999-12-09

arxiv.org/abs/astro-ph/9912205v1

Astronomy and Astrophysics

Astrophysics

To appear in the proceedings of the 5th Huntsville Symposium on Gamma Ray Bursts

Scientific paper

10.1063/1.1361582

We investigate synchrotron emission models as the source of gamma ray burst spectra. We show that allowing for synchrotron self absorption and a ``smooth cutoff'' to the electron energy distribution produces a wide range of low energy spectral behavior. We show that there exists a correlation between the value of the peak of the $\nu F_{\nu}$ spectrum, $E_{p}$, and the low energy spectral index $\alpha$ as determined by spectral fits over a finite bandwidth. Finally, we discuss the implications of synchrotron emission from internal shocks for GRB spectral evolution.

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