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

Details The influence of jet geometry on light curves and spectra of GRB afterglows The influence of jet geometry on light curves and spectra of GRB afterglows

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26a...434..623t&link_type=abstract

Astronomy and Astrophysics, Volume 434, Issue 2, May I 2005, pp.623-627

Astronomy and Astrophysics

Astrophysics

Gamma Rays: Bursts, Ism: Jets And Outflows, Radiative Transfer

Scientific paper

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 numerically solve the full time-, angle- and frequency-dependent special relativistic transfer equation in the comoving frame using the method of long characteristics.

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