期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 500, 期 1, 页码 736-762出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/staa2800
关键词
cosmology: dark energy; cosmology: large-scale structure of Universe; cosmology: observations
资金
- French National Research Agency (ANR) [ANR-16-CE31-0021]
- OCEVU Labex - 'Investissements d'Avenir' French government [ANR-11-LABX-0060]
- A*MIDEX project - 'Investissements d'Avenir' French government [ANR-11-IDEX0001-02]
- Programa de Apoyo a Proyectos de Investigacion e Inovacion ca Teconologica (PAPITT) [IA101518, IA101619]
- Proyecto LANCAD-UNAM-DGTIC [319]
- LANCAD-UNAM-DGTIC [136]
- la Caixa Foundation [100010434, LCF/BQ/PI18/11630024]
- European Research Council [670193]
- National Research Foundation of Korea (NRF) - Korean Ministry of Education, Science and Technology (MoEST) [2017R1E1A1A01077508, 2020R1A2C1005655]
- Sejong University
- Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
- European Research Council (ERC) under the European Union [693024]
- Alfred P. Sloan Foundation
- U.S. Department of Energy Office of Science
- Center for High-Performance Computing at the University of Utah
- Brazilian Participation Group
- Carnegie Institution for Science
- Carnegie Mellon University
- Chilean Participation Group
- French Participation Group
- Harvard-Smithsonian Center for Astrophysics
- Instituto de Astrofisica de Canarias
- Johns Hopkins University
- Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo
- Korean Participation Group
- Lawrence Berkeley National Laboratory
- Leibniz Institut fur Astrophysik Potsdam (AIP)
- Max-Planck-Institut fur Astronomie (MPIA Heidelberg)
- Max-Planck-Institut fur Astrophysik (MPA Garching)
- Max-Planck-Institut fur Extraterrestrische Physik (MPE)
- National Astronomical Observatories of China
- New Mexico State University
- New York University
- University of Notre Dame
- Observatario Nacional/MCTI
- Ohio State University
- Pennsylvania State University
- Shanghai Astronomical Observatory
- United Kingdom Participation Group
- Universidad Nacional Autonoma de Mexico
- University of Arizona
- University of Colorado Boulder
- University of Oxford
- University of Portsmouth
- University of Utah
- University of Virginia
- University of Washington
- University of Wisconsin
- Vanderbilt University
- Yale University
In this study, the cosmological analysis of the eBOSS and BOSS LRGs sample provides joint constraints on three cosmological parameter combinations. The results are consistent with a flat Lambda cold dark matter model with standard gravity.
We present the cosmological analysis of the configuration-space anisotropic clustering in the completed Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 16 galaxy sample. This sample consists of luminous red galaxies (LRGs) spanning the redshift range 0.6< z< 1, at an effective redshift of z(eff = 0.698.) It combines 174 816 eBOSS and 202 642 BOSS LRGs. We extract and model the baryon acoustic oscillation (BAO) and redshift-space distortion (RSD) features from the galaxy two-point correlation function to infer geometrical and dynamical cosmological constraints. The adopted methodology is extensively tested on a set of realistic simulations. The correlations between the inferred parameters from the BAO and full-shape correlation function analyses are estimated. This allows us to derive joint constraints on the three cosmological parameter combinations: D-M(z)/r(d), D-H(z)/r(d), and f sigma(8)(z), where DM is the comoving angular diameter distance, D-H is the Hubble distance, r(d) is the comoving BAO scale, f is the linear growth rate of structure, and sigma(8) is the amplitude of linear matter perturbations. After combining the results with those from the parallel power spectrum analysis of Gil-Marin et al., we obtain the constraints: D-M/r(d) = 17.65 +/- 0.30, D-H/r(d) = 19.77 +/- 0.47, and f sigma(8) = 0.473 +/- 0.044. These measurements are consistent with a flat Lambda cold dark matter model with standard gravity.
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