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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.
Testing the isotropy of the Universe by using the JLA compilation of Type Ia supernovae
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
语种英语
关键词Supernovae: General Large-scale Structure Of Universe
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.
2016
卷号456期号:2页码:1881-1885
学科领域Astronomy & Astrophysics
DOIhttp://dx.doi.org/10.1093/mnras/stv2804
收录类别SCI
项目资助者National Natural Science Fund of China [11375203, 11305181, 11322545, 11335012, 11575271] ; National Natural Science Fund of China [11375203, 11305181, 11322545, 11335012, 11575271] ; National Natural Science Fund of China [11375203, 11305181, 11322545, 11335012, 11575271] ; National Natural Science Fund of China [11375203, 11305181, 11322545, 11335012, 11575271]
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21758
专题理论物理所科研产出_SCI论文
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.
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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.
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