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The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: anisotropic clustering analysis in configuration-space

Research output: Contribution to journalArticlepeer-review

Author(s)

Jiamin Hou, Ariel G. Sánchez, Román Scoccimarro, Salvador Salazar-Albornoz, Etienne Burtin, Héctor Gil-Marín, Will J. Percival, Rossana Ruggeri, Pauline Zarrouk, Gong-Bo Zhao, Julian Bautista, Jonathan Brinkmann, Joel R. Brownstein, Kyle S. Dawson, N. Chandrachani Devi, Adam D. Myers, Salman Habib, Katrin Heitmann, Rita Tojeiro, Graziano Rossi & 3 more Donald P. Schneider, Hee-Jong Seo, Yuting Wang

School/Research organisations

Abstract

We explore the cosmological implications of anisotropic clustering measurements of the quasar sample from Data Release 14 of the Sloan Digital Sky Survey IV Extended Baryon Oscillation Spectroscopic Survey (eBOSS) in configuration space. The ∼147,000 quasar sample observed by eBOSS offers a direct tracer of the density field and bridges the gap of previous BAO measurements between redshift 0.8<z<2.2. By analysing the two-point correlation function characterized by clustering wedges ξwi(s) and multipoles ξℓ(s), we measure the angular diameter distance, Hubble parameter and cosmic structure growth rate. We define a systematic error budget for our measurements based on the analysis of N-body simulations and mock catalogues. Based on the DR14 large scale structure quasar sample at the effective redshift zeff=1.52, we find the growth rate of cosmic structure fσ8(zeff)=0.396±0.079, and the geometric parameters DV(z)/rd=26.47±1.23, and FAP(z)=2.53±0.22, where the uncertainties include both statistical and systematic errors. These values are in excellent agreement with the best-fitting standard ΛCDM model to the latest cosmic microwave background data from Planck.
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Original languageEnglish
JournalMonthly Notices of the Royal Astronomical Society
Publication statusSubmitted - 10 Jan 2018

    Research areas

  • Cosmology, Large scale structure, Data analysis

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