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Constraints on cosmological models from Hubble parameters measurements
Zheng W(郑伟); Li H(李虹); Xia JQ(夏俊卿); Zheng, W; Li, H; Xia, JQ; Wan, YP; Li, SY; Li, MZ;; Wan YP(万友平); Li SY(李思宇)
2014
Source PublicationINTERNATIONAL JOURNAL OF MODERN PHYSICS D
ISSN0218-2718
EISSN1793-6594
Volume23Issue:5Pages:1450051
AbstractIn this paper, we study the cosmological constraints from the measurements of Hubble parameters - H(z) data. Here, we consider two kinds of H(z) data: the direct H-0 probe from the Hubble Space Telescope (HST) observations of Cepheid variables with H-0 = 73.8 +/- 2.4 km s(-1) Mpc(-1) and several measurements on the Hubble parameter at high redshifts H(z). Employing Markov Chain Monte Carlo (MCMC) method, we also combine the WMAP nine-year data (WMAP9), the baryon acoustic oscillations (BAO) and type Ia supernovae (SNIa) Union2.1 compilation to determine the cosmological parameters, such as the equation of state (EoS) of dark energy w, the curvature of the universe Omega(k), the total neutrino mass Sigma m(nu), the effective number of neutrinos N-eff and the parameters associated with the power spectrum of primordial fluctuations. These H(z) data provide extra information on the accelerate rate of our universe at high redshifts. Therefore, adding these H(z) data significantly improves the constraints on cosmological parameters, such as the number of relativistic species. Moreover, we find that direct prior on H-0 from HST can also give good constraints on some parameters, due to the degeneracies between these parameters and H-0.
KeywordMeasurements of Hubble parameters neutrino
Subject AreaAstronomy & Astrophysics
DOI10.1142/S0218271814500515
Indexed BySCI ; INSPIREHEP ; ADS
Language英语
WOS IDWOS:000335515400013
ADS Bibcode2014IJMPD..2350051Z
ADS URLhttps://ui.adsabs.harvard.edu/abs/2014IJMPD..2350051Z
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2014IJMPD..2350051Z/citations
inspireid1285339
inspireURLhttps://inspirehep.net/literature/1285339
Citation statistics
Cited Times:8 [INSPIRE]
Cited Times:9 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/225046
Collection粒子天体物理中心
Recommended Citation
GB/T 7714
Zheng W,Li H,Xia JQ,et al. Constraints on cosmological models from Hubble parameters measurements[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS D,2014,23(5):1450051.
APA 郑伟.,李虹.,夏俊卿.,Zheng, W.,Li, H.,...&李思宇.(2014).Constraints on cosmological models from Hubble parameters measurements.INTERNATIONAL JOURNAL OF MODERN PHYSICS D,23(5),1450051.
MLA 郑伟,et al."Constraints on cosmological models from Hubble parameters measurements".INTERNATIONAL JOURNAL OF MODERN PHYSICS D 23.5(2014):1450051.
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