Testing the isotropy of the Universe by using the JLA compilation of Type Ia supernovae

doi:http://dx.doi.org/10.1093/mnras/stv2804

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	Testing the isotropy of the Universe by using the JLA compilation of Type Ia supernovae
	Lin, HN; Wang, S; Chang, Z; Li, X; Lin, HN (reprint author), Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China.; Wang, S (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2016
卷号	456 期号:2 页码:1881-1885
关键词	Supernovae: General Large-scale Structure Of Universe
DOI	http://dx.doi.org/10.1093/mnras/stv2804
英文摘要	We probe the possible anisotropy of the Universe by using the joint light-curve analysis (JLA) compilation of Type Ia supernovae. We apply the Markov Chain Monte Carlo method to constrain the amplitude and direction of anisotropy in three cosmological models. For the dipole-modulated Lambda cold dark matter (Lambda CDM) model, the anisotropic amplitude is consistent with zero at 68 per cent cl, and has an upper bound AD < 1.98 x 10(-3) at 95 per cent cl. Regardless of much larger uncertainty, we amazingly find that the dipole direction of JLA is almost opposite to that of Union2. Similar results are found for the dipole-modulated wCDM and Chevallier-Polarski-Linder (CPL) models. Thus, the Universe is still well consistent with the isotropy according to the JLA compilation.
学科主题	Astronomy & Astrophysics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21758]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Lin, HN (reprint author), Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China.; Wang, S (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Lin, HN,Wang, S,Chang, Z,et al. Testing the isotropy of the Universe by using the JLA compilation of Type Ia supernovae[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,456(2):1881-1885.
APA	Lin, HN,Wang, S,Chang, Z,Li, X,Lin, HN ,&Wang, S .(2016).Testing the isotropy of the Universe by using the JLA compilation of Type Ia supernovae.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,456(2),1881-1885.
MLA	Lin, HN,et al."Testing the isotropy of the Universe by using the JLA compilation of Type Ia supernovae".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 456.2(2016):1881-1885.