1206.6807 (A. G. Tolstov)

The influence of jet geometry on light curves and spectra of GRB afterglows    [PDF]

A. G. Tolstov

We have performed detailed calculations of spectra and light curves of GRB afterglows assuming that the observed GRBs can have a jet geometry. The calculations are based on an expanding relativistic shock GRB afterglow model where the afterglow is the result of synchrotron radiation of relativistic electrons with power-law energy distribution at the front of external shock being decelerated in a circumstellar medium. To determine the intensity on the radiation surface we solve numerically the full time-, angle-, and frequency-dependent special relativistic transfer equation in the comoving frame using the method of long characteristics.

View original: http://arxiv.org/abs/1206.6807