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
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We present the cosmological analysis of the configuration-space anisotropic clustering in the completed Sloan Digital Sky Survey IV (SDSS-IV) extended Baryon Oscillation Spectroscopic Survey (eBOSS) DR16 galaxy sample. This sample consists of luminous red galaxies (LRGs) spanning the redshift range 0.6 < z < 1, at an effective redshift of zeff = 0.698. It combines 174 816 eBOSS LRGs and 202 642 BOSS CMASS galaxies. We extract and model the baryon acoustic oscillations (BAO) and redshift-space distortions (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 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. 2020, we obtain the constraints: DM/rd = 17.65 ± 0.30, DH/rd = 19.77 ± 0.47, fσ8 = 0.473 ± 0.044. These measurements are consistent with a flat ΛCDM model with standard gravity.
Bautista , J E , Paviot , R , Magaña , M V , de la Torre , S , Fromenteau , S , Gil-Marín , H , Ross , A J , Burtin , E , Dawson , K S , Hou , J , Kneib , J-P , de Mattia , A , Percival , W J , Rossi , G , Tojeiro , R , Zhao , C , Zhao , G-B , Alam , S , Brownstein , J , Chapman , M J , Choi , P D , Chuang , C-H , Escoffier , S , de la Macorra , A , du Mas des Bourboux , H , Mohammad , F G , Moon , J , Müller , E-M , Nadathur , S , Newman , J A , Schneider , D , Seo , H-J & Wang , Y 2021 , ' 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 ' , Monthly Notices of the Royal Astronomical Society , vol. 500 , no. 1 , pp. 736–762 . https://doi.org/10.1093/mnras/staa2800
Monthly Notices of the Royal Astronomical Society
Copyright © 2020 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at https://doi.org/10.1093/mnras/staa2800.
DescriptionRP, SdlT, and SE acknowledge the support from the French National Research Agency (ANR) under contract ANR-16-CE31-0021, eBOSS. SdlT and SE acknowledge the support of the OCEVU Labex (ANR-11-LABX-0060) and the A*MIDEX project (ANR-11-IDEX-0001-02) funded by the ”Investissements d’Avenir” French government program managed by the ANR. MVM and SF are partially supported by Programa de Apoyo a Proyectos de Investigacíon e Inovacion ca TeconoÍogica (PAPITT) no. IA101518,no. IA101619, Proyecto LANCAD-UNAM-DGTIC-319 and LANCAD-UNAM-DGTIC-136. HGM acknowledges the support from la Caixa Foundation (ID 100010434) which code LCF/B/PI18/11630024. SA is supported by the European Research Council through the COSFORM Research Grant (#670193). GR, PDC and JM acknowledge support from the National Research Foundation of Korea (NRF) through Grants No. 2017R1E1A1A01077508 and No.2020R1A2C1005655 funded by the Korean Ministry of Education, Science and Technology (MoEST), and from the faculty research fund of Sejong University.
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