Optimal redshift weighting for redshift-space distortions | |
Ruggeri, Rossana1; Percival, Will J.1; Gil-Marin, Hector1,2,3; Zhu, Fangzhou4; Zhao, Gong-Bo1,5![]() ![]() | |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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2017 | |
卷号 | 464期号:3页码:2698-2707 |
关键词 | surveys galaxies: statistics cosmological parameters cosmology: observations large-scale structure of Universe |
英文摘要 | The low-statistical errors on cosmological parameters promised by future galaxy surveys will only be realized with the development of new, fast, analysis methods that reduce potential systematic problems to low levels. We present an efficient method for measuring the evolution of the growth of structure using redshift-space distortions (RSDs), that removes the need to make measurements in redshift shells. We provide sets of galaxy-weights that cover a wide range in redshift, but are optimized to provide differential information about cosmological evolution. These are derived to optimally measure the coefficients of a parametrization of the redshift-dependent matter density, which provides a framework to measure deviations from the concordance Lambda CDM cosmology, allowing for deviations in both geometric and/or growth. We test the robustness of the weights by comparing with alternative schemes and investigate the impact of galaxy bias. We extend the results to measure the combined anisotropic baryon acoustic oscillation and RSD signals. |
WOS标题词 | Science & Technology ; Physical Sciences |
类目[WOS] | Astronomy & Astrophysics |
研究领域[WOS] | Astronomy & Astrophysics |
关键词[WOS] | COSMOLOGICAL PARAMETERS ; EIGENMODE ANALYSIS ; POWER-SPECTRUM |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000393647600015 |
内容类型 | 期刊论文 |
源URL | [http://ir.bao.ac.cn/handle/114a11/8303] ![]() |
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, Dennis Sciama Bldg, Portsmouth PO1 3FX, Hants, England 2.ILP, Sorbonne Univ, 98 Bis Blvd Arago, F-75014 Paris, France 3.Univ Paris 06, Lab Phys Nucl & Hautes Energies, F-75252 Paris 05, France 4.Yale Univ, Dept Phys, New Haven, CT 06511 USA 5.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
推荐引用方式 GB/T 7714 | Ruggeri, Rossana,Percival, Will J.,Gil-Marin, Hector,et al. Optimal redshift weighting for redshift-space distortions[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,464(3):2698-2707. |
APA | Ruggeri, Rossana,Percival, Will J.,Gil-Marin, Hector,Zhu, Fangzhou,Zhao, Gong-Bo,&Wang, Yuting.(2017).Optimal redshift weighting for redshift-space distortions.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,464(3),2698-2707. |
MLA | Ruggeri, Rossana,et al."Optimal redshift weighting for redshift-space distortions".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 464.3(2017):2698-2707. |
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