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The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measurement of the growth rate of structure from the anisotropic correlation function between redshift 0.8 and 2.2

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Author(s)

Pauline Zarrouk, Etienne Burtin, Héctor Gil-Marín, Ashley J. Ross, Rita Tojeiro, Isabelle Parîs, Kyle S. Dawson, Adam D. Myers, Will J. Percival, Chia-Hsun Chuang, Gong-Bo Zhao, Julian Bautista, Johan Comparat, Violeta González-Pérez, Salman Habib, Katrin Heitmann, Jiamin Hou, Pierre Laurent, Jean-Marc Le Goff, Francisco Prada & 19 more Sergio A. Rodríguez-Torres, Graziano Rossi, Rossana Ruggeri, Ariel G. Sánchez, Donald P. Schneider, Jeremy L. Tinker, Yuting Wang, Christophe Yèche, Falk Baumgarten, Joel R. Brownstein, Sylvain de la Torre, Hélion du Mas des Bourboux, Jean-Paul Kneib, Vivek Mariappan, Nathalie Palanque-Delabrouille, John Peacock, Patrick Petitjean, Hee-Jong Seo, Cheng Zhao

School/Research organisations

Abstract

We present the clustering measurements of quasars in configuration space based on the Data Release 14 (DR14) of the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey. This dataset includes 148,659 quasars spread over the redshift range 0.8 ≤ z ≤ 2.2 and spanning 2112.9 square degrees. We use the Convolution Lagrangian Perturbation Theory (CLPT) approach with a Gaussian Streaming (GS) model for the redshift space distortions of the correlation function and demonstrate its applicability for dark matter halos hosting eBOSS quasartracers. At the effective redshift zeff = 1.52, we measure the linear growth rate of structure fσ8(zeff)= 0.426 ± 0.077, the expansion rate H(zeff) = 159^{+12}_{-13} (r_s^fid/rs)km.s-1.Mpc-1, and the angular diameterdistance DA(zeff)=1850^{+90}_{-115} (rs/r_s^fid) Mpc, where rs is the sound horizon at the end of the baryon drag epoch and r_s^fid is its value in the fiducial cosmology. The quoted errors include both systematic and statistical contributions. The results on the evolution of distances are consistent with the predictions of flat Λ-Cold Dark Matter (Λ-CDM) cosmology with Planck parameters, and the measurement of fσ8 extends the validity of General Relativity (GR) to higher redshifts (z > 1). This paper is released with companion papers using the same sample. The results on the cosmological parameters of the studies are found to be in very good agreement, providing clear evidence of the complementarity and of the robustness of the first full-shape clustering measurements with the eBOSS DR14 quasar sample.
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Original languageEnglish
Pages (from-to)1639-1663
JournalMonthly Notices of the Royal Astronomical Society
Volume477
Issue number2
Early online date24 Feb 2018
DOIs
Publication statusPublished - 21 Jun 2018

    Research areas

  • Cosmology: observations, (Cosmology:) large-scale structure of Universe

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