期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 499, 期 3, 页码 4140-4157出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/staa3074
关键词
cosmological parameters; cosmological: observations; large-scale structure of Universe
资金
- French National Research Agency by the eBOSS ANR [ANR-16-CE31-0021]
- OCEVU Labex [ANR-11-LABX-0060]
- National Research Foundation of Korea (NRF) [2017R1E1A1A01077508, 2020R1A2C1005655]
- Korean Ministry of Education, Science andTechnology (MoEST)
- Sejong University
- Alfred P. Sloan Foundation
- U.S. Department of Energy Office of Science
- Center for HighPerformance Computing at the University of Utah
- Carnegie Institution for Science
- Chilean Participation Group
- French Participation Group
- Harvard-Smithsonian Center for Astrophysics
- Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo
- Korean Participation Group
- Lawrence Berkeley National Laboratory
- Max-Planck-Institut fur Astrophysik (MPA Garching)
- Max-Planck-Institut fur Extraterrestrische Physik (MPE)
- New Mexico State University, New York University, University of Notre Dame, Observatario Nacional/MCTI
- Shanghai Astronomical Observatory, United Kingdom Participation Group
- Yale University
- Agence Nationale de la Recherche (ANR) [ANR-16-CE31-0021] Funding Source: Agence Nationale de la Recherche (ANR)
- National Research Foundation of Korea [2020R1A2C1005655, 2017R1E1A1A01077508] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We present an analysis of the anisotropic redshift-space void-galaxy correlation in configuration space using the Sloan Digital Sky Survey extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 16 luminous red galaxy (LRG) sample. This sample consists of LRGs between redshifts 0.6 and 1.0, combined with the high redshift z > 0.6 tail of the Baryon Oscillation Spectroscopic Survey Data Release 12 CMASS sample. We use a reconstruction method to undo redshift-space distortion (RSD) effects from the galaxy field before applying a watershed void-finding algorithm to remove bias from the void selection. We then perform a joint fit to the multipole moments of the correlation function for the growth rate f sigma(8) and the geometrical distance ratio D-M/D-H, finding f sigma(8) (z(eff)) = 0.356 +/- 0.079 and D-M/D-H(z(eff)) = 0.868 +/- 0.017 at the effective redshift z(eff) = 0.69 of the sample. The posterior parameter degeneracies are orthogonal to those from galaxy clustering analyses applied to the same data, and the constraint achieved on D-M/D-H is significantly tighter. In combination with the consensus galaxy BAO and full-shape analyses of the same sample, we obtain f sigma(8) = 0.447 +/- 0.039, D-M/r(d) = 17.48 +/- 0.23, and D-H/r(d) = 20.10 +/- 0.34. These values are in good agreement with the ACDM model predictions and represent reductions in the uncertainties of 13 per cent, 23 per cent, and 28 per cent, respectively, compared to the combined results from galaxy clustering, or an overall reduction of 55 per cent in the allowed volume of parameter space.
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