GRB Jet Beaming Angle Statistics

Details GRB Jet Beaming Angle Statistics GRB Jet Beaming Angle Statistics

2009-11-09

arxiv.org/abs/0911.1579v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

9 pages, 4 figures, accepted by Research in Astronomy and Astrophysics(RAA)

Scientific paper

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.

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