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arXiv · 0911.1579

GRB Jet Beaming Angle Statistics

Y. Gao·Z. G. Dai
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Abstract

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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Y. Gao, Z. G. Dai. 2009-11-09. GRB Jet Beaming Angle Statistics. https://doi.org/10.1088/1674-4527/10/2/005

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