Compton dragged gamma-ray bursts: the spectrum
Astrophysics
2009-10-31 v2
Abstract
We calculate the spectrum resulting from the interaction of a fireball with ambient soft photons. These photons are assumed to be produced by the walls of a funnel in a massive star. By parameterizing the radial dependence of the funnel temperature we calculate the deceleration of the fireball self-consistently, taking into account the absorption of high energy gamma-rays due to interaction with the softer ambient photons. The resulting spectrum is peaked at energies in agreement with observations, has a nu^2 slope in the X-ray band and a steep power-law high energy tail.
Cite
@article{arxiv.astro-ph/0002049,
title = {Compton dragged gamma-ray bursts: the spectrum},
author = {G. Ghisellini and D. Lazzati and A. Celotti and M. J. Rees},
journal= {arXiv preprint arXiv:astro-ph/0002049},
year = {2009}
}
Comments
5 pages, 3 figures, accepted for publication in MNRAS, pink pages