The extended Baryon Oscillation Spectroscopic Survey: a cosmological forecast
文献类型：期刊论文
| 作者 | Zhao, Gong-Bo1,2 ; Wang, Yuting1,2; Ross, Ashley J.2,3; Shandera, Sarah4,5; Percival, Will J.2; Dawson, Kyle S.6; Kneib, Jean-Paul7,8; Myers, Adam D.9; Brownstein, Joel R.6; Comparat, Johan10
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2016-04-11 |
| 卷号 | 457期号:3页码:2377-2390 |
| 关键词 | dark energy large-scale structure of Universe |
| 英文摘要 | We present a science forecast for the extended Baryon Oscillation Spectroscopic Survey (eBOSS) survey. Focusing on discrete tracers, we forecast the expected accuracy of the baryonic acoustic oscillation (BAO), the redshift-space distortion (RSD) measurements, the fNL parameter quantifying the primordial non-Gaussianity, the dark energy and modified gravity parameters. We also use the line-of-sight clustering in the Lyman a forest to constrain the total neutrino mass. We find that eBOSS luminous red galaxies, emission line galaxies and clustering quasars can achieve a precision of 1, 2.2 and 1.6 per cent, respectively, for spherically averaged BAO distance measurements. Using the same samples, the constraint on fob is expected to be 2.5, 3.3 and 2.8 per cent, respectively. For primordial non-Gaussianity, eBOSS alone can reach an accuracy of a (f(NL)) similar to 10-15. eBOSS can at most improve the dark energy figure of merit by a factor of 3 for the Chevallier-Polarski-Linder parametrization, and can well constrain three eigenmodes for the general equation-of-state parameter. eBOSS can also significantly improve constraints on modified gravity parameters by providing the RSD information, which is highly complementary to constraints obtained from weak lensing measurements. A principal component analysis shows that eBOSS can measure the eigenmodes of the effective Newton's constant to 2 per cent precision; this is a factor of 10 improvement over that achievable without eBOSS. Finally, we derive the eBOSS constraint (combined with Planck, Dark Energy Survey and BOSS) on the total neutrino mass, sigma (Em(upsilon)) = 0.03 eV (68 per cent CL), which in principle makes it possible to distinguish between the two scenarios of neutrino mass hierarchies. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000373583900008 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5358]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Portsmouth, Inst Cosmol & Gravitat, Dennis Sciama Bldg, Portsmouth PO1 3FX, Hants, England 3.Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA 4.Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA 5.Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada 6.Univ Utah, Dept Phys & Astron, 115 S 1400 E, Salt Lake City, UT 84112 USA 7.Ecole Polytech Fed Lausanne, Astrophys Lab, CH-1015 Lausanne, Switzerland 8.Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France 9.Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA 10.Univ Autonoma Madrid, Inst Fis Teor, UAM CSIC, E-28049 Madrid, Spain |
| 推荐引用方式 GB/T 7714 | Zhao, Gong-Bo,Wang, Yuting,Ross, Ashley J.,et al. The extended Baryon Oscillation Spectroscopic Survey: a cosmological forecast[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,457(3):2377-2390. |
| APA | Zhao, Gong-Bo.,Wang, Yuting.,Ross, Ashley J..,Shandera, Sarah.,Percival, Will J..,...&Zou, Hu.(2016).The extended Baryon Oscillation Spectroscopic Survey: a cosmological forecast.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,457(3),2377-2390. |
| MLA | Zhao, Gong-Bo,et al."The extended Baryon Oscillation Spectroscopic Survey: a cosmological forecast".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 457.3(2016):2377-2390. |
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