A TIGHT L-iso-E-p,E-z-Gamma(0) CORRELATION OF GAMMA-RAY BURSTS

	A TIGHT L-iso-E-p,E-z-Gamma(0) CORRELATION OF GAMMA-RAY BURSTS
	Liang, En-Wei 1,2,3; Lin, Ting-Ting 1,2; Lu, Jing 1,2; Lu, Rui-Jing 1,2; Zhang, Jin3 ; Zhang, Bing 1,2,4
刊名	ASTROPHYSICAL JOURNAL
	2015-11-10
卷号	813 期号:2
关键词	gamma-ray burst: general methods: statistical
英文摘要	We select a sample of 34 gamma-ray bursts (GRBs) whose Gamma(0) values are derived with the onset peaks observed in the afterglow light curves (except for GRB 060218, whose Gamma(0) is estimated with its radio data), and investigate the correlations among Gamma(0), the isotropic peak luminosity (L-iso), and the peak energy (E-p,E-z) of the (nu)f(nu) spectrum in the cosmological rest frame. An analysis of pair correlations among these observables well confirms the results reported by the previous papers. More interestingly, a tight correlation among L-iso, E-p,E-z, and Gamma(0) is found from a multiple regression analysis, which takes the form of L-iso proportional to E-p,z(1.34 +/- 0.14)Gamma(1.32 +/- 0.19)(0) or E-p,E-z proportional to L-iso(0.55 +/- 0.06) Gamma(-0.50 +/- 0.17)(0) Nine other GRBs whose Gamma(0) are derived via the pair production opacity constraint also follow such a correlation. Excluding GRB 060218, the L-iso-E-p,E-z-Gamma(0) correlation is valid, and it even holds in the jet co-moving frame. However, GRB 060218 deviates the L-iso'-E-p' relation of typical GRBs in the jet co-moving frame with 3 sigma. We argue that the L-iso-E-p,E-z-Gamma(0) correlation may be more physical than the Liso-Ep, z correlation, since physically the relationship between the observed Liso and Ep, z not only depends on radiation physics, but also depends on the bulk motion of the jet. We explore the possible origins of this correlation and discuss its physical implications for understanding GRB jet composition and radiation mechanisms.
收录类别	SCI
语种	英语
WOS记录号	WOS:000365288900036
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5531]
专题	国家天文台_空间科学研究部
作者单位	1.Guangxi Univ, Dept Phys, GXU NAOC Ctr Astrophys & Space Sci, Nanning 530004, Peoples R China 2.Guangxi Key Lab Relativist Astrophys, Nanning 530004, Guangxi, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 4.Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA
推荐引用方式 GB/T 7714	Liang, En-Wei,Lin, Ting-Ting,Lu, Jing,et al. A TIGHT L-iso-E-p,E-z-Gamma(0) CORRELATION OF GAMMA-RAY BURSTS[J]. ASTROPHYSICAL JOURNAL,2015,813(2).
APA	Liang, En-Wei,Lin, Ting-Ting,Lu, Jing,Lu, Rui-Jing,Zhang, Jin,&Zhang, Bing.(2015).A TIGHT L-iso-E-p,E-z-Gamma(0) CORRELATION OF GAMMA-RAY BURSTS.ASTROPHYSICAL JOURNAL,813(2).
MLA	Liang, En-Wei,et al."A TIGHT L-iso-E-p,E-z-Gamma(0) CORRELATION OF GAMMA-RAY BURSTS".ASTROPHYSICAL JOURNAL 813.2(2015).