A Shotgun Model for Gamma Ray Bursts
天体物理学
2009-10-31 v2
摘要
We propose that gamma ray bursts (GRBs) are produced by a shower of heavy blobs running into circumstellar material at highly relativistic speeds. The gamma ray emission is produced in the shocks these bullets drive into the surrounding medium. The short term variability seen in GRBs is set by the slowing-down time of the bullets while the overall duration of the burst is set by the lifetime of the central engine. A requirement of this model is that the ambient medium be dense, consistent with a strong stellar wind. The efficiency of the burst can be relatively high.
关键词
引用
@article{arxiv.astro-ph/9908026,
title = {A Shotgun Model for Gamma Ray Bursts},
author = {S. Heinz and M. C. Begelman},
journal= {arXiv preprint arXiv:astro-ph/9908026},
year = {2009}
}
备注
4 pages, 2 figures, revised version accepted by ApJ Letters