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Chang, BR; Xu, LX; Xu, LX (reprint author), Dalian Univ Technol, Sch Phys & Optoelect Technol, Inst Theoret Phys, Dalian 116024, Peoples R China.
Confronting dark energy anisotropic stress
Source PublicationPHYSICAL REVIEW D
Language英语
KeywordBaryon Acoustic-oscillations Hubble Constant Growth-rate Galaxy Matter
AbstractWe use currently available cosmic observations to probe and constrain an imperfect dark-energy fluid that is characterized by a constant equation of state w and a constant speed of viscosity c(vis)(2). The model parameter space was scanned using the Markov chain Monte Carlo method. The results show that the speed of viscosity c(vis)(2) was not well constrained when currently available data sets are used (including the cosmic microwave background radiation from Planck-2013 and WMAP9, type Ia supernovae, baryon acoustic oscillations, redshift space distortion f sigma(8)(z), and gravitational weak lensing from Canada-France Hawaii Telescope Lensing Survey (CFHTLenS). However, the cosmic data sets slightly favor phantom dark energy with a negative speed of viscosity c(vis)(2).
2014
ISSN1550-7998
Volume90Issue:2Pages:27301
Subject AreaPhysics
DOI10.1103/PhysRevD.90.027301
Indexed BySCI
Funding OrganizationNSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01] ; NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01] ; NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01] ; NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15714
Collection理论物理所科研产出_SCI论文
Corresponding AuthorXu, LX (reprint author), Dalian Univ Technol, Sch Phys & Optoelect Technol, Inst Theoret Phys, Dalian 116024, Peoples R China.
Recommended Citation
GB/T 7714
Chang, BR,Xu, LX,Xu, LX . Confronting dark energy anisotropic stress[J]. PHYSICAL REVIEW D,2014,90(2):27301.
APA Chang, BR,Xu, LX,&Xu, LX .(2014).Confronting dark energy anisotropic stress.PHYSICAL REVIEW D,90(2),27301.
MLA Chang, BR,et al."Confronting dark energy anisotropic stress".PHYSICAL REVIEW D 90.2(2014):27301.
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