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

Pauline Zarrouk, Etienne Burtin, Héctor Gil-Marín, Ashley J. Ross, Rita Tojeiro, Isabelle Pâris, Kyle S. Dawson, Adam D. Myers, Will J. Percival, Chia Hsun Chuang, Gong-Bo Zhao, Julian E. Bautista, Johan Comparat, Violeta González-Pérez, Salman Habib, Katrin Heitmann, Jiamin Hou, Pierre Laurent-Puig, Jean Marc Le Goff, Francisco PradaSergio 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

Research output: Contribution to journalArticlepeer-review

Abstract

We present the clustering measurements of quasars in configuration spacebased on the Data Release 14 (DR14) of the Sloan Digital Sky Survey IVextended Baryon Oscillation Spectroscopic Survey. This dataset includes148,659 quasars spread over the redshift range 0.8 ≤ z ≤ 2.2 andspanning 2112.9 square degrees. We use the Convolution LagrangianPerturbation Theory (CLPT) approach with a Gaussian Streaming (GS) modelfor the redshift space distortions of the correlation function anddemonstrate its applicability for dark matter halos hosting eBOSS quasartracers. At the effective redshift zeff = 1.52, we measurethe linear growth rate of structurefσ8(zeff) = 0.426 ± 0.077, theexpansion rate H(z_eff)=159^{+12}_{-13}(rs^fid/r_s)km.s^{-1}.Mpc^{-1}, and theangular diameter distance DA(z_eff)=1850^{+90}_{-115}(r_s/rs^fid)Mpc, where rs is the sound horizon atthe end of the baryon drag epoch and rs^fid is its value inthe fiducial cosmology. The quoted uncertainties include both systematicand statistical contributions. The results on the evolution of distancesare consistent with the predictions of flat Λ-Cold Dark Matter(Λ-CDM) cosmology with Planck parameters, and the measurement offσ8 extends the validity of General Relativity (GR) tohigher redshifts(z > 1) This paper is released with companion papersusing the same sample. The results on the cosmological parameters of thestudies are found to be in very good agreement, providing clear evidenceof the complementarity and of the robustness of the first full-shapeclustering measurements with the eBOSS DR14 quasar sample.
Original languageEnglish
Pages (from-to)1639-1663
Number of pages25
JournalMonthly Notices of the Royal Astronomical Society
Volume477
Issue number2
Early online date24 Feb 2018
DOIs
Publication statusPublished - 1 Jun 2018

Keywords

  • cosmology: observations
  • (cosmology:) large-scale structure of Universe

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