ITP OpenIR  > 理论物理所2015年知识产出
Constraining Equation of State of Dark Matter: Including Weak Gravitational Lensing
Yang, L; Yang, WQ; Xu, LX; Xu, LX (reprint author), Dalian Univ Technol, Inst Theoret Phys, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China.
2015
发表期刊CHINESE PHYSICS LETTERS
卷号32期号:5页码:59801
文章类型Article
摘要Usually the equation of state (EoS) of dark matter is zero when it is cold, however there exists the possibility of a (effective) nonzero EoS of dark matter due to its decay and interaction with dark energy. In this work, we try to constrain the EoS of dark matter w(dm) using the currently available cosmic observations which include the geometrical and dynamical measurements. For the geometrical measurements, the luminosity distance of type Ia supernovae, the angular diameter distance and comoving sound horizon from baryon acoustic oscillations and the cosmic microwave background radiation will be employed. The data points from the redshift-space distortion and weak gravitational lensing will be taken as dynamical measurements. Using the Markov chain Monte Carlo method, we obtain a very tight constraint on the EoS of dark matter: w(dm) = 0.0000532(-0.000686-0.00136-0.00177)(+0.000692+0.00136+0.00183)
学科领域Physics
资助者National Natural Science Foundation of China [11275035] ; National Natural Science Foundation of China [11275035] ; National Natural Science Foundation of China [11275035] ; National Natural Science Foundation of China [11275035]
DOIhttp://dx.doi.org/10.1088/0256-307X/32/5/059801
关键词[WOS]BARYON ACOUSTIC-OSCILLATIONS ; COSMOLOGICAL CONSTRAINTS ; HUBBLE CONSTANT ; GROWTH-RATE ; ENERGY ; ALIGNMENTS ; DISTANCE ; IMPACT
收录类别SCI
语种英语
资助者National Natural Science Foundation of China [11275035] ; National Natural Science Foundation of China [11275035] ; National Natural Science Foundation of China [11275035] ; National Natural Science Foundation of China [11275035]
WOS类目Physics, Multidisciplinary
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21015
专题理论物理所2015年知识产出
通讯作者Xu, LX (reprint author), Dalian Univ Technol, Inst Theoret Phys, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China.
推荐引用方式
GB/T 7714
Yang, L,Yang, WQ,Xu, LX,et al. Constraining Equation of State of Dark Matter: Including Weak Gravitational Lensing[J]. CHINESE PHYSICS LETTERS,2015,32(5):59801.
APA Yang, L,Yang, WQ,Xu, LX,&Xu, LX .(2015).Constraining Equation of State of Dark Matter: Including Weak Gravitational Lensing.CHINESE PHYSICS LETTERS,32(5),59801.
MLA Yang, L,et al."Constraining Equation of State of Dark Matter: Including Weak Gravitational Lensing".CHINESE PHYSICS LETTERS 32.5(2015):59801.
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