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题名: A new equation of state for dark energy model
作者: Feng, Lei1, 3; Lu Tan(陆埮)2, 3
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2011-11-01
卷号: 11, 期号:11
关键词: dark energy theory ; dark energy experiments
学科分类: Astronomy & Astrophysics
DOI: 10.1088/1475-7516/2011/11/034
文章类型: Article
英文摘要: A new parameterization for the dark energy equation of state(EoS) is proposed and some of its cosmological consequences are also investigated. This new parameterization is the modification of Efstathiou' dark energy EoS parameterization. w(z) is a well behaved function for z >> 1 and has same behavior in z at low redshifts with Efstathiou' parameterization. In this parameterization there are two free parameter w(0) and w(a). We discuss the constraints on this model's parameters from current observational data. The best fit values of the cosmological parameters with la confidence-level regions are: Omega(m) = 0.2735(-0.0163)(+0.0171) w(0) = -1.0537(-0.1511)(+0.1432) and w(a) = 0.2738(-0.8288)(+0.8018).
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]: Astronomy & Astrophysics ; Physics
关键词[WOS]: FIELD ELLIPTIC GALAXIES ; OBSERVATIONAL H(Z) DATA ; PROBE WMAP OBSERVATIONS ; DIGITAL SKY SURVEY ; IA SUPERNOVAE ; COSMOLOGICAL PARAMETERS ; INTERMEDIATE REDSHIFT ; HUBBLE PARAMETER ; RED GALAXIES ; CONSTRAINTS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000298141300034
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/11049
Appears in Collections:陆埮_期刊论文

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作者单位: 1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
3.Nanjing Univ, Purple Mt Observ, Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China

Recommended Citation:
冯 磊、陆 埮.A new equation of state for dark energy model,JCAP,2011,11(34):
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