The Kolmogorov-Smirnov test for three redshift distributions of long gamma-ray bursts in t

The Kolmogorov-Smirnov test for three redshift distributions of long gamma-ray bursts in the Swift

Era

Yun-Ming Dong;Tan Lu

【期刊名称】《天文和天体物理学研究》 【年(卷),期】2009(009)001

【摘要】We investigate redshift distributions of three long burst samples, with the first sample containing 131 long bursts with observed redshifts, the second including 220 long bursts with pseudo-redshifts calculated by the variability-luminosity relation, and the third including 1194 long bursts with pseudo-redshifts calculated by the lag-luminosity relation, respectively. In the redshift range 0-1 the Kolmogorov-Smirnov probability of the observed redshift distribution and that of the variability-luminosity relation is large. In the redshift ranges 1-2, 2-3, 3-6.3 and 0-37, the Kolmogorov-Smimov probabilities of the redshift distribution from lag-luminosity relation and the observed redshift distri-bution are also large. For the GRBs, which appear both in the two pseudo-redshift burst samples, the KS probability of the pseudo-redshift distribution from the lag-luminosity relation and the observed reshifi distribution is 0.447, which is very large. Based on these results, some conclusions are drawn: I) the V-Liso relation might be more believable than the τ-Liso relation in low redshift ranges and the τ-Liso

relation might be more real than the V-Liso relation in high redshift ranges; ii) if we do not consider the redshift ranges, the τ-Liso relation might be more physical and intrinsical than the V-Liso relation. 【总页数】7页(95-101) 【关键词】

【作者】Yun-Ming Dong;Tan Lu

【作者单位】College of Physics and Electronic Engineering, Sichuan Normal

University,

Chengdu

610066,China;Purple

Mountain

Observatory, Chinese Academy of Sciences, Nanjing 210008, China;Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China 【正文语种】中文 【中图分类】P1 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_research-astronomy-astrophysics_thesis/0201254258642.html 【相关文献】

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