Constraining the anisotropy of the universe from supernovae and gamma-ray bursts

	Constraining the anisotropy of the universe from supernovae and gamma-ray bursts
	Chang Z(常哲); Li X(李昕); Lin HN(林海南); 王赛;Chang, Z; Li, X; Lin, HN; Wang, S
刊名	MODERN PHYSICS LETTERS A
	2014
卷号	29 期号:15 页码:1450067
关键词	Cosmology anisotropy supernovae gamtiT y bursts
英文摘要	Recently, an anisotropic cosmological model was proposed. An arbitrary one-form, which picks out a privileged axis in the universe, was added to the Friedmann Robertson Walker (FRW) line element. The distance-redshift relation was modified such that it is direction-dependent. In this paper, we use the Union2 dataset and 59 high-redshift gamma-ray bursts (C.:411Es) to give constraints on the anisotropy of the universe. The results show that the magnitude of anisotropy is about D = 0.044 0.018, and the privileged axis points toward the direction (to, ho) = (306.1" 18.7", 18.2" 11.2') in the galactic coordinate system. The anisotropy is small and the isotropic cosmological model is an excellent approximation.
学科主题	Physics
收录类别	SCI
WOS记录号	WOS:000336383800002
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/225184]
专题	高能物理研究所_理论物理室
推荐引用方式 GB/T 7714	Chang Z,Li X,Lin HN,et al. Constraining the anisotropy of the universe from supernovae and gamma-ray bursts[J]. MODERN PHYSICS LETTERS A,2014,29(15):1450067.
APA	常哲.,李昕.,林海南.,王赛；Chang, Z.,Li, X.,...&Wang, S.(2014).Constraining the anisotropy of the universe from supernovae and gamma-ray bursts.MODERN PHYSICS LETTERS A,29(15),1450067.
MLA	常哲,et al."Constraining the anisotropy of the universe from supernovae and gamma-ray bursts".MODERN PHYSICS LETTERS A 29.15(2014):1450067.