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The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological implications of the large-scale two-point correlation function
文献类型：期刊论文
| 作者 | Sanchez, Ariel G.1; Scoccola, C. G.2,3; Ross, A. J.4; Percival, W.4; Manera, M.4; Montesano, F.1; Mazzalay, X.1; Cuesta, A. J.5; Eisenstein, D. J.6; Kazin, E.7 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2012-09-01 |
| 卷号 | 425期号:1页码:415-437 |
| 关键词 | cosmological parameters large-scale structure of Universe |
| 英文摘要 | We obtain constraints on cosmological parameters from the spherically averaged redshift-space correlation function of the CMASS Data Release 9 (DR9) sample of the Baryonic Oscillation Spectroscopic Survey (BOSS). We combine this information with additional data from recent cosmic microwave background (CMB), supernova and baryon acoustic oscillation measurements. Our results show no significant evidence of deviations from the standard flat ? cold dark matter model, whose basic parameters can be specified by Om = 0.285 +/- 0.009, 100?Ob = 4.59 +/- 0.09, ns = 0.961 +/- 0.009, H0 = 69.4 +/- 0.8?km?s-1?Mpc-1 and s8 = 0.80 +/- 0.02. The CMB+CMASS combination sets tight constraints on the curvature of the Universe, with Ok = -0.0043 +/- 0.0049, and the tensor-to-scalar amplitude ratio, for which we find r < 0.16 at the 95?per cent confidence level (CL). These data show a clear signature of a deviation from scale invariance also in the presence of tensor modes, with ns < 1 at the 99.7?per cent CL. We derive constraints on the fraction of massive neutrinos of f? < 0.049 (95?per cent CL), implying a limit of ?m? < 0.51?eV. We find no signature of a deviation from a cosmological constant from the combination of all data sets, with a constraint of wDE = -1.033 +/- 0.073 when this parameter is assumed time-independent, and no evidence of a departure from this value when it is allowed to evolve as wDE(a) = w0 + wa(1 - a). The achieved accuracy on our cosmological constraints is a clear demonstration of the constraining power of current cosmological observations. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000307887300051 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6323]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Max Planck Inst Extraterr Phys, D-85741 Garching, Germany 2.Inst Astrofis Canarias, Tenerife, Spain 3.Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain 4.Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England 5.Yale Univ, Dept Phys, New Haven, CT 06520 USA 6.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA 7.Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia 8.Univ Arizona, Steward Observ, Tucson, AZ 85721 USA 9.CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain 10.Campus Int Excellence UAM CSIC, E-28049 Madrid, Spain |
| 推荐引用方式 GB/T 7714 | Sanchez, Ariel G.,Scoccola, C. G.,Ross, A. J.,et al. The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological implications of the large-scale two-point correlation function[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2012,425(1):415-437. |
| APA | Sanchez, Ariel G..,Scoccola, C. G..,Ross, A. J..,Percival, W..,Manera, M..,...&Zhao, G..(2012).The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological implications of the large-scale two-point correlation function.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,425(1),415-437. |
| MLA | Sanchez, Ariel G.,et al."The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological implications of the large-scale two-point correlation function".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 425.1(2012):415-437. |
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来源：国家天文台
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