Maqola

The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: measurement of the BAO and growth rate of structure of the luminous red galaxy sample from the anisotropic correlation function between redshifts 0.6 and 1

Julian BautistaInstitute of Cosmology and Gravitation, Dennis Sciama Building, University of Portsmouth, Portsmouth PO1 3FX, UKRomain PaviotAix Marseille University, CNRS, CNES, LAM, Marseille, FranceM. Vargas-MagañaInstituto de Física , Universidad Nacional Autónoma de México, Apdo. Postal 20-364, Ciudad de México, MéxicoSylvain de la TorreAix Marseille University, CNRS, CNES, LAM, Marseille, FranceS. FromenteauInstituto de Ciencias Físicas , Universidad Nacional Autónoma de México, Av. Universidad s/n, 62210 Cuernavaca, Mor., MexicoHéctor Gil-MarínInstitut de Ciències del Cosmos , Universitat de Barcelona , ICCUB, Martí i Franquès 1, E-08028 Barcelona, SpainA.J. RossCenter for Cosmology and Astro-Particle Physics , Ohio State University, Columbus, OH 43210, USAE. BurtinCEA , Centre de Saclay, Irfu/SPP, F-91191 Gif-sur-Yvette, FranceKyle DawsonDepartment of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112, USAJiamin HouMax-Planck-Institut für Extraterrestrische Physik, Postfach 1312, Giessenbachstr, D-85748 Garching bei München, GermanyJean‐Paul KneibLaboratoire dástrophysique , Ecole Polytechnique Fédérale de Lausanne Observatoire de Sauverny, CH-1290 Versoix, SwitzerlandArnaud de MattiaCEA , Centre de Saclay, Irfu/SPP, F-91191 Gif-sur-Yvette, FranceWill J. PercivalDepartment of Physics and Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, CanadaGraziano RossiDepartment of Physics and Astronomy, Sejong University, Seoul 143-747, KoreaRita TojeiroSchool of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, UKCheng ZhaoLaboratoire dástrophysique , Ecole Polytechnique Fédérale de Lausanne Observatoire de Sauverny, CH-1290 Versoix, SwitzerlandGong‐Bo ZhaoCollege of Astronomy and Space Sciences , University of Chinese Academy of Sciences, Beijing 100049, ChinaShadab AlamInstitute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ, UKJoel R. BrownsteinDepartment of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112, USAMichael J. ChapmanDepartment of Physics and Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, CanadaPeter Doohyun ChoiDepartment of Physics and Astronomy, Sejong University, Seoul 143-747, KoreaChia-Hsun ChuangKavli Institute for Particle Astrophysics and Cosmology , Stanford University, 452 Lomita Mall, Stanford, CA 94305, USAS. EscoffierAix Marseille University, CNRS/IN2P3, CPPM, Marseille, FranceAxel de la MacorraInstituto de Física , Universidad Nacional Autónoma de México, Apdo. Postal 20-364, Ciudad de México, MéxicoHélion du Mas des BourbouxDepartment of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112, USAFaizan G MohammadDepartment of Physics and Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, CanadaJeongin MoonDepartment of Physics and Astronomy, Sejong University, Seoul 143-747, KoreaEva-Maria MüllerSub-department of Astrophysics , Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UKS. NadathurInstitute of Cosmology and Gravitation, Dennis Sciama Building, University of Portsmouth, Portsmouth PO1 3FX, UKJeffrey A. NewmanDepartment of Physics and Astronomy and PITT PACC, University of Pittsburgh, Pittsburgh, PA 15260, USADonald P. SchneiderDepartment of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802, USAHee‐Jong SeoDepartment of Physics and Astronomy, Ohio University, 251B Clippinger Labs, Athens, OH 45701, USAYuting WangNational Astronomy Observatories , Chinese Academy of Science, Beijing 100012, China

2020en

ABI

Annotatsiya

ABSTRACT 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 &lt; $z$ &lt; 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: DM($z$)/rd, DH($z$)/rd, and fσ8($z$), where DM is the comoving angular diameter distance, DH is the Hubble distance, rd is the comoving BAO scale, f is the linear growth rate of structure, and σ8 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: DM/rd = 17.65 ± 0.30, DH/rd = 19.77 ± 0.47, and fσ8 = 0.473 ± 0.044. These measurements are consistent with a flat Lambda cold dark matter model with standard gravity.

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DOI: 10.1093/mnras/staa2800

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