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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
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Language英语
KeywordSupernovae: General Large-scale Structure Of Universe
AbstractWe 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
Volume456Issue:2Pages:1881-1885
Subject AreaAstronomy & Astrophysics
DOIhttp://dx.doi.org/10.1093/mnras/stv2804
Indexed BySCI
Funding OrganizationNational 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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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/21758
Collection理论物理所科研产出_SCI论文
Corresponding AuthorLin, 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.
Recommended Citation
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.
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