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A new equation of state for dark energy model
Feng, Lei1,3; Lu, Tan2,3
2011-11-01
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume11Issue:11
AbstractA 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).
KeywordDark Energy Theory Dark Energy Experiments
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/1475-7516/2011/11/034
WOS KeywordFIELD ELLIPTIC GALAXIES ; OBSERVATIONAL H(Z) DATA ; PROBE WMAP OBSERVATIONS ; DIGITAL SKY SURVEY ; IA SUPERNOVAE ; COSMOLOGICAL PARAMETERS ; INTERMEDIATE REDSHIFT ; HUBBLE PARAMETER ; RED GALAXIES ; CONSTRAINTS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000298141300034
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/11049
Collection院士文集_陆埮
Affiliation1.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
GB/T 7714
Feng, Lei,Lu, Tan. A new equation of state for dark energy model[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2011,11(11).
APA Feng, Lei,&Lu, Tan.(2011).A new equation of state for dark energy model.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,11(11).
MLA Feng, Lei,et al."A new equation of state for dark energy model".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 11.11(2011).
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