Gao, Yan 2009 伽马暴喷流张角的统计

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Title:		GRB jet beaming angle statistics
Authors:		Gao, Yan; Dai, Zi-Gao
Affiliation:		AA(Department of Astronomy, Nanjing University, Nanjing 210093, China), AB(Department of Astronomy, Nanjing University, Nanjing 210093, China)
Publication:		Research in Astronomy and Astrophysics, Volume 10, Issue 2, pp. 142-150 (2010).
Publication Date:		02/2010
Origin:		IOP
DOI:		10.1088/1674-4527/10/2/005
Bibliographic Code:		2010RAA....10..142G

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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