Article

The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: BAO and RSD measurements from the anisotropic power spectrum of the quasar sample between redshift 0.8 and 2.2

Richard NeveuxIRFU,CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceE. BurtinIRFU,CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceArnaud de MattiaIRFU,CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceA. G. SmithIRFU,CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceA.J. RossCenter for Cosmology and Astroparticle Physics, The Ohio State University, Columbus, OH 43210, USAJiamin HouMax-Planck-Institut für Extraterrestrische Physik, Postfach 1312, Giessenbachstr., D-85748 Garching bei München, GermanyJulian BautistaInstitute of Cosmology & Gravitation, Dennis Sciama Building, University of Portsmouth, Portsmouth PO1 3FX, UKJ. BrinkmannApache Point Observatory, P.O. Box 59, Sunspot, NM 88349, USAChia-Hsun ChuangKavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94305, USAKyle DawsonDepartment Physics and Astronomy, University of Utah, 115 S 1400 E, Salt Lake City, UT 84112, USAHéctor Gil-MarínInstitut de Ciències del Cosmos, Universitat de Barcelona, ICCUB, Mart’i i Franquès 1, E-08028 Barcelona, SpainBrad W. LykeUniversity of Wyoming, 1000 E. University Ave., Laramie, WY 82071, USAAxel de la MacorraInstituto de Física, Universidad Nacional Autónoma de México, Apdo. Postal 20-364, MéxicoHélion du Mas des BourbouxDepartment Physics and Astronomy, University of Utah, 115 S 1400 E, Salt Lake City, UT 84112, USAFaizan G MohammadDepartment of Physics and Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, CanadaEva-Maria MüllerSub-department of Astrophysics, Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UKAdam D. MyersUniversity of Wyoming, 1000 E. University Ave., Laramie, WY 82071, USAJeffrey A. NewmanPITT PACC, Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USAWill J. PercivalDepartment of Physics and Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, CanadaGraziano RossiDepartment of Physics and Astronomy, Sejong University, Seoul 143-747, KoreaDonald P. SchneiderInstitute for Gravitation and the Cosmos, Pennsylvania State University, University Park, PA 16802, USAM. VivekDepartment of Astronomy & Astrophysics, Pennsylvania State University, University Park, PA 16802, USAPauline ZarroukIRFU,CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceCheng ZhaoInstitute of Physics, Laboratory of Astrophysics, École Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, SwitzerlandGong‐Bo ZhaoNational Astronomy Observatories, Chinese Academy of Science, Beijing, 100012, P.R. China

2020en

ABI

Abstract

ABSTRACT We measure the clustering of quasars of the final data release (DR16) of eBOSS. The sample contains $343\, 708$ quasars between redshifts 0.8 ≤ z ≤ 2.2 over $4699\, \mathrm{deg}^2$. We calculate the Legendre multipoles (0,2,4) of the anisotropic power spectrum and perform a BAO and a Full-Shape (FS) analysis at the effective redshift zeff = 1.480. The errors include systematic errors that amount to 1/3 of the statistical error. The systematic errors comprise a modelling part studied using a blind N-body mock challenge and observational effects studied with approximate mocks to account for various types of redshift smearing and fibre collisions. For the BAO analysis, we measure the transverse comoving distance DM(zeff)/rdrag = 30.60 ± 0.90 and the Hubble distance DH(zeff)/rdrag = 13.34 ± 0.60. This agrees with the configuration space analysis, and the consensus yields: DM(zeff)/rdrag = 30.69 ± 0.80 and DH(zeff)/rdrag = 13.26 ± 0.55. In the FS analysis, we fit the power spectrum using a model based on Regularised Perturbation Theory, which includes redshift space distortions and the Alcock–Paczynski effect. The results are DM(zeff)/rdrag = 30.68 ± 0.90 and DH(zeff)/rdrag = 13.52 ± 0.51 and we constrain the linear growth rate of structure f(zeff)σ8(zeff) = 0.476 ± 0.047. Our results agree with the configuration space analysis. The consensus analysis of the eBOSS quasar sample yields: DM(zeff)/rdrag = 30.21 ± 0.79, DH(zeff)/rdrag = 3.23 ± 0.47, and f(zeff)σ8(zeff) = 0.462 ± 0.045 and is consistent with a flat ΛCDM cosmological model using Planck results.

Identifiers

DOI: 10.1093/mnras/staa2780

Citations and references

Cited by 70 references

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