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Observational constraints on the early dark energy model
Feng, Lei1; Yang, Yu-Peng
2011-07-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume11Issue:7Pages:751-758
AbstractDark energy can be studied by its influence on the expansion of the Universe. We investigate current constraints on early dark energy (EDE) achievable by the combined observational data from type Ia supernovae (557), baryon acoustic oscillations, the current cosmic microwave background and the observed Hubble parameter. We find that combining these data sets provides powerful constraints on early dark energy and the best fit values of the parameters in 68% and 95% confidence-level regions are: Omega(m0) = 0.2897(-0.0138-0.0194)(+0.0149+0.0207) Omega(e) = 0.0125(-0.0129-0.0129)(+0.0272+0.0381), omega(0) = -1.0415(-0.109-0.1604)(+0.0891+0.1182), and h = 0.6988(-0.0058-0.0081)(+0.0059+0.0083).
KeywordCosmology Dark Energy Cosmological Parameters
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordEQUATION-OF-STATE ; PROBE WMAP OBSERVATIONS ; OBSERVATIONS COSMOLOGICAL INTERPRETATION ; FIELD ELLIPTIC GALAXIES ; DIGITAL SKY SURVEY ; GAMMA-RAY BURSTS ; IA SUPERNOVAE ; INTERMEDIATE REDSHIFT ; HUBBLE PARAMETER ; RED GALAXIES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000293037500001
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/4565
Collection期刊(老文献)
Affiliation1.Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
2.Nanjing Univ, Joint Ctr Particle Nucl Phys & Cosmol, Purple Mt Observ, Nanjing 210093, Peoples R China
Recommended Citation
GB/T 7714
Feng, Lei,Yang, Yu-Peng. Observational constraints on the early dark energy model[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2011,11(7):751-758.
APA Feng, Lei,&Yang, Yu-Peng.(2011).Observational constraints on the early dark energy model.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,11(7),751-758.
MLA Feng, Lei,et al."Observational constraints on the early dark energy model".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 11.7(2011):751-758.
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