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The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: BAO and RSD measurements from anisotropic clustering analysis of the quasar sample in configuration space between redshift 0.8 and 2.2

Hou, Jiamin; Sánchez, Ariel G; Ross, Ashley J; Smith, Alex; Neveux, Richard; Bautista, Julian; Burtin, Etienne; Zhao, Cheng; Scoccimarro, Román; Dawson, Kyle S; de Mattia, Arnaud; de la Macorra, Axel; du Mas des Bourboux, Hélion; Eisenstein, Daniel J; Gil-Marín, Héctor; Lyke, Brad W; Mohammad, Faizan G; Mueller, Eva-Maria; Percival, Will J; Rossi, Graziano; Vargas Magaña, Mariana; Zarrouk, Pauline; Zhao, Gong-Bo; Brinkmann, Jonathan; Brownstein, Joel R; Chuang, Chia-Hsun; Myers, Adam D; Newman, Jeffrey A; Schneider, Donald P; Vivek, M

The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: BAO and RSD measurements from anisotropic clustering analysis of the quasar sample in configuration space between redshift 0.8 and 2.2 Thumbnail


Authors

Jiamin Hou

Ariel G Sánchez

Ashley J Ross

Alex Smith

Richard Neveux

Julian Bautista

Etienne Burtin

Cheng Zhao

Román Scoccimarro

Kyle S Dawson

Arnaud de Mattia

Axel de la Macorra

Hélion du Mas des Bourboux

Daniel J Eisenstein

Héctor Gil-Marín

Brad W Lyke

Faizan G Mohammad

Eva-Maria Mueller

Will J Percival

Graziano Rossi

Mariana Vargas Magaña

Gong-Bo Zhao

Jonathan Brinkmann

Joel R Brownstein

Chia-Hsun Chuang

Adam D Myers

Jeffrey A Newman

Donald P Schneider

M Vivek



Abstract

We measure the anisotropic clustering of the quasar sample from Data Release 16 (DR16) of the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey (eBOSS). A sample of 343 708 spectroscopically confirmed quasars between redshift 0.8 < z < 2.2 are used as tracers of the underlying dark matter field. In comparison with DR14 sample, the final sample doubles the number of objects as well as the survey area. In this paper, we present the analysis in configuration space by measuring the two-point correlation function and decomposing it using the Legendre polynomials. For the full-shape analysis of the Legendre multipole moments, we measure the baryon acoustic oscillation (BAO) distance and the growth rate of the cosmic structure. At an effective redshift of zeff = 1.48, we measure the comoving angular diameter distance DM(zeff)/rdrag = 30.66 ± 0.88, the Hubble distance DH(zeff)/rdrag = 13.11 ± 0.52, and the product of the linear growth rate and the rms linear mass fluctuation on scales of 8h−1Mpc⁠, fσ8(zeff) = 0.439 ± 0.048. The accuracy of these measurements is confirmed using an extensive set of mock simulations developed for the quasar sample. The uncertainties on the distance and growth rate measurements have been reduced substantially (∼45 and ∼30 per cent) with respect to the DR14 results. We also perform a BAO-only analysis to cross check the robustness of the methodology of the full-shape analysis. Combining our analysis with the Fourier-space analysis, we arrive at DcM(zeff)/rdrag=30.21±0.79⁠, DcH(zeff)/rdrag=13.23±0.47⁠, and fσc8(zeff)=0.462±0.045⁠.

Journal Article Type Article
Acceptance Date Oct 7, 2020
Online Publication Date Oct 23, 2020
Publication Date 2021-01
Deposit Date Jun 29, 2021
Publicly Available Date Jun 29, 2021
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 500
Issue 1
Pages 1201-1221
DOI https://doi.org/10.1093/mnras/staa3234
Public URL https://durham-repository.worktribe.com/output/1273401

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Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2020, The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.






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