Spectra and Light Curves of Gamma-Ray Burst Afterglows

  title={Spectra and Light Curves of Gamma-Ray Burst Afterglows},
  author={Re’em Sari and Tsvi Piran and Ramesh Narayan},
  journal={The Astrophysical Journal Letters},
  pages={L17 - L20}
The recently discovered gamma-ray burst afterglow is believed to be described reasonably well by synchrotron emission from a decelerating relativistic shell that collides with an external medium. To compare theoretical models with afterglow observations, we calculate here the broadband spectrum and corresponding light curve of synchrotron radiation from a power-law distribution of electrons in an expanding relativistic shock. Both the spectrum and the light curve consist of several power-law… 

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