THE TWO-POINT CORRELATION FUNCTION OF GAMMA-RAY BURSTS

	THE TWO-POINT CORRELATION FUNCTION OF GAMMA-RAY BURSTS
	Li, MH; Lin HN(林海南); Lin, HN
刊名	ASTROPHYSICAL JOURNAL
	2015
卷号	807 期号:1 页码:76
关键词	cosmology: observations gamma-ray burst: general large-scale structure of universe methods: statistical
英文摘要	In this paper, we examine the spatial distribution of gamma-ray bursts (GRBs) using a sample of 373 objects. We subdivide the GRB data into two redshift intervals over the redshift range 0 < z < 6.7. We measure the two-point correlation function, xi(r), of the GRBs. In determining the separation distance of the GRB pairs, we consider two representative cosmological models: a cold dark matter universe plus a cosmological constant Lambda, with (Omega(m), Omega(Lambda)) = (0.28, 0.72), and an Einstein-de Sitter universe, with (Omega(m), Omega(Lambda)) = (1, 0). We find a z-decreasing correlation of the GRB distribution, which is in agreement with the predictions of the current structure formation theory. We fit a power-law model xi(r) = (r/r(0))(-gamma) to the measured xi(r) and obtain an amplitude and slope of r(0) = 1235.2 +/- 342.6 h(-1) Mpc and gamma = 0.80 +/- 0.19, respectively (1 sigma confidence level), over the scales r = 200-10(4) h(-1) Mpc. Our results provide a supplement to the measurement of matter correlation on large scales, while the matter distribution below 200 h(-1) Mpc is usually described by the correlation function of galaxies.
学科主题	Astronomy & Astrophysics
类目[WOS]	Astronomy & Astrophysics
收录类别	SCI
WOS记录号	WOS:000358945200076
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228572]
专题	高能物理研究所_理论物理室
推荐引用方式 GB/T 7714	Li, MH,Lin HN,Lin, HN. THE TWO-POINT CORRELATION FUNCTION OF GAMMA-RAY BURSTS[J]. ASTROPHYSICAL JOURNAL,2015,807(1):76.
APA	Li, MH,林海南,&Lin, HN.(2015).THE TWO-POINT CORRELATION FUNCTION OF GAMMA-RAY BURSTS.ASTROPHYSICAL JOURNAL,807(1),76.
MLA	Li, MH,et al."THE TWO-POINT CORRELATION FUNCTION OF GAMMA-RAY BURSTS".ASTROPHYSICAL JOURNAL 807.1(2015):76.