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The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measuring growth rate and geometry with anisotropic clustering
文献类型：期刊论文
| 作者 | Samushia, Lado1,2; Reid, Beth A.3,4,5; White, Martin3,4,5; Percival, Will J.1; Cuesta, Antonio J.6,7; Zhao, Gong-Bo1,8 ; Ross, Ashley J.1; Manera, Marc1,9; Aubourg, Eric10; Beutler, Florian3
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2014-04-01 |
| 卷号 | 439期号:4页码:3504-3519 |
| 关键词 | gravitation cosmological parameters dark energy dark matter distance scale large-scale structure of Universe |
| 英文摘要 | We use the observed anisotropic clustering of galaxies in the Baryon Oscillation Spectroscopic Survey Data Release 11 CMASS sample to measure the linear growth rate of structure, the Hubble expansion rate and the comoving distance scale. Our sample covers 8498 deg(2) and encloses an effective volume of 6 Gpc(3) at an effective redshift of (z) over bar = 0.57. We find f Sigma(8) = 0.441 +/- 0.044, H = 93.1 +/- 3.0 km s(-1) Mpc(-1) and D-A = 1380 +/- 23 Mpc when fitting the growth and expansion rate simultaneously. When we fix the background expansion to the one predicted by spatially flat Lambda cold dark matter (Lambda CDM) model in agreement with recent Planck results, we find f Sigma(8) = 0.447 +/- 0.028 (6 per cent accuracy). While our measurements are generally consistent with the predictions of Lambda CDM and general relativity, they mildly favour models in which the strength of gravitational interactions is weaker than what is predicted by general relativity. Combining our measurements with recent cosmic microwave background data results in tight constraints on basic cosmological parameters and deviations from the standard cosmological model. Separately varying these parameters, we find w = -0.983 +/- 0.075 (8 per cent accuracy) and gamma = 0.69 +/- 0.11 (16 per cent accuracy) for the effective equation of state of dark energy and the growth rate index, respectively. Both constraints are in good agreement with the standard model values of w = -1 and gamma = 0.554. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000334115400024 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6663]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth P01 3FX, Hants, England 2.Ilia State Univ, Natl Abastumani Astrophys Observ, GE-1060 Tbilisi, Rep of Georgia 3.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA 4.Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA 5.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA 6.Yale Univ, Dept Phys, New Haven, CT 06520 USA 7.CSIC, IEEC UB, Inst Ciencies Cosmos, E-08028 Barcelona, Spain 8.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 9.UCL, London WC1E 6BT, England 10.Univ Paris Diderot, CNRS, IN2P3, APC,CEA Irfu,Obs Paris,Sorbonne Paris Cit, F-75205 Paris, France |
| 推荐引用方式 GB/T 7714 | Samushia, Lado,Reid, Beth A.,White, Martin,et al. The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measuring growth rate and geometry with anisotropic clustering[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,439(4):3504-3519. |
| APA | Samushia, Lado.,Reid, Beth A..,White, Martin.,Percival, Will J..,Cuesta, Antonio J..,...&Zehavi, Idit.(2014).The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measuring growth rate and geometry with anisotropic clustering.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,439(4),3504-3519. |
| MLA | Samushia, Lado,et al."The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measuring growth rate and geometry with anisotropic clustering".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 439.4(2014):3504-3519. |
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