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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
发表期刊PHYSICAL REVIEW D
语种英语
关键词Baryon Acoustic-oscillations Hubble Constant Growth-rate Galaxy Matter
摘要We 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
卷号90期号:2页码:27301
学科领域Physics
DOI10.1103/PhysRevD.90.027301
收录类别SCI
项目资助者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] ; NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01]
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15714
专题理论物理所科研产出_SCI论文
通讯作者Xu, LX (reprint author), Dalian Univ Technol, Sch Phys & Optoelect Technol, Inst Theoret Phys, Dalian 116024, Peoples R China.
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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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