Quasar-Lyman α forest cross-correlation from BOSS DR11: Baryon Acoustic Oscillations

Andreu Font-Ribera(Lawrence Berkeley National Laboratory), D. Kirkby(University of California, Irvine), Nicolás G. Busca(Centre National de la Recherche Scientifique), Jordi Miralda‐Escudé(Institució Catalana de Recerca i Estudis Avançats), Nicholas P. Ross(Lawrence Berkeley National Laboratory), Anže Slosar(Brookhaven National Laboratory), James Rich(Commissariat à l'Énergie Atomique et aux Énergies Alternatives), É. Aubourg(Centre National de la Recherche Scientifique), S. Bailey(Lawrence Berkeley National Laboratory), Vaishali Bhardwaj(Lawrence Berkeley National Laboratory), Julian Bautista(Centre National de la Recherche Scientifique), Florian Beutler(Lawrence Berkeley National Laboratory), Dmitry Bizyaev(University of Washington), Michael Blomqvist(University of California, Irvine), H. Brewington(National Solar Observatory), J. Brinkmann(National Solar Observatory), Joel R. Brownstein(University of Utah), Bill Carithers(Lawrence Berkeley National Laboratory), Kyle Dawson(University of Utah), Timothée Delubac(Commissariat à l'Énergie Atomique et aux Énergies Alternatives), Garrett Ebelke(National Solar Observatory), Daniel J. Eisenstein(Center for Astrophysics Harvard & Smithsonian), Jian Ge(University of Florida), Karen Kinemuchi(University of Washington), Khee‐Gan Lee(Max Planck Institute for Astronomy), Viktor Malanushenko(National Solar Observatory), Elena Malanushenko(National Solar Observatory), Moses Marchante(University of Washington), Daniel Margala(University of California, Irvine), Demitri Muna(The Ohio State University), Adam D. Myers(University of Wyoming), P. Noterdaeme(Centre National de la Recherche Scientifique), Daniel Oravetz(University of Washington), N. Palanque‐Delabrouille(Commissariat à l'Énergie Atomique et aux Énergies Alternatives), Isabelle Pâris(University of Chile), Patrick Petitjean(Centre National de la Recherche Scientifique), Matthew M. Pieri(University of Portsmouth), Graziano Rossi(Commissariat à l'Énergie Atomique et aux Énergies Alternatives), Donald P. Schneider(Pennsylvania State University), Audrey Simmons(University of Washington), Matteo Viel(Istituto Nazionale di Fisica Nucleare), Christophe Yèche(Commissariat à l'Énergie Atomique et aux Énergies Alternatives), Donald G. York(University of Chicago)
Journal of Cosmology and Astroparticle Physics
May 1, 2014
10.1088/1475-7516/2014/05/027
Cited by 568Open Access
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Abstract

We measure the large-scale cross-correlation of quasars with the Lyα forest absorption, using over 164,000 quasars from Data Release 11 of the SDSS-III Baryon Oscillation Spectroscopic Survey. We extend the previous study of roughly 60,000 quasars from Data Release 9 to larger separations, allowing a measurement of the Baryonic Acoustic Oscillation (BAO) scale along the line of sight c /( H ( z = 2.36) r s ) = 9.0±0.3 and across the line of sight D A ( z = 2.36)/ r s = 10.8±0.4, consistent with CMB and other BAO data. Using the best fit value of the sound horizon from Planck data ( r s = 147.49 Mpc), we can translate these results to a measurement of the Hubble parameter of H ( z = 2.36) = 226±8 km s −1 Mpc −1 and of the angular diameter distance of D A ( z = 2.36) = 1590±60 Mpc. The measured cross-correlation function and an update of the code to fit the BAO scale (baofit) are made publicly available.

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