Existing theory and models suggest that a Type I (merger) GRB should have a larger jet beaming angle than a Type II (collapsar) GRB, but so far no statistical evidence is available to support this suggestion. In this paper, we obtain a sample of 37 beaming angles and calculate the probability that this is true. A correction is also devised to account for the scarcity of Type I GRBs in our sample. The probability is calculated to be 83% without the correction and 71% with it.
@article{arxiv.0911.1579,
title = {GRB Jet Beaming Angle Statistics},
author = {Y. Gao and Z. G. Dai},
journal= {arXiv preprint arXiv:0911.1579},
year = {2014}
}
Comments
9 pages, 4 figures, accepted by Research in Astronomy and Astrophysics(RAA)