Electron-Positron Pair Cascades and Precursors in Gamma-Ray Bursts
Astrophysics
2009-10-31 v3
Abstract
Gamma-ray burst sources with a high luminosity can produce electron-positron pair cascades in their environment as a result of back-scattering of a seed fraction of their original hard spectrum. The resulting spectral modifications offer the possibility of diagnosing not only the compactness parameter of the gamma-ray emitting region but also the baryonic density of the environment external to the burst.
Keywords
Cite
@article{arxiv.astro-ph/0011284,
title = {Electron-Positron Pair Cascades and Precursors in Gamma-Ray Bursts},
author = {P. Meszaros and E. Ramirez-Ruiz and M. J. Rees},
journal= {arXiv preprint arXiv:astro-ph/0011284},
year = {2009}
}
Comments
Ap.J. in press; aaspp4, 12 pages, 2 figs