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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
2014
发表期刊MODERN PHYSICS LETTERS A
卷号29期号:15页码:1450067
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.
关键词Cosmology anisotropy supernovae gamtiT y bursts
学科领域Physics
DOI10.1142/S0217732314500679
收录类别SCI
WOS记录号WOS:000336383800002
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被引频次:17[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225184
专题理论物理室
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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.
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