| 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)
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| 2014 | |
| Source Publication | INTERNATIONAL JOURNAL OF MODERN PHYSICS D
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| ISSN | 0218-2718 |
| EISSN | 1793-6594 |
| Volume | 23Issue:5Pages:1450051 |
| Abstract | In 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. |
| Keyword | Measurements of Hubble parameters neutrino |
| Subject Area | Astronomy & Astrophysics |
| DOI | 10.1142/S0218271814500515 |
| Indexed By | SCI ; INSPIREHEP ; ADS |
| Language | 英语 |
| WOS ID | WOS:000335515400013 |
| ADS Bibcode | 2014IJMPD..2350051Z |
| ADS URL | https://ui.adsabs.harvard.edu/abs/2014IJMPD..2350051Z |
| ADS CITATIONS | https://ui.adsabs.harvard.edu/abs/2014IJMPD..2350051Z/citations |
| inspireid | 1285339 |
| inspireURL | https://inspirehep.net/literature/1285339 |
| Citation statistics |
Cited Times:8 [INSPIRE]
Cited Times:9 [ADS]
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| Document Type | 期刊论文 |
| Identifier | http://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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