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The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in Fourier-space

Research output: Contribution to journalArticle

  • Hee Jong Seo
  • Ashley J. Ross
  • Patrick McDonald
  • Shun Saito
  • Adam S. Bolton
  • Joel R. Brownstein
  • Chia Hsun Chuang
  • Antonio J. Cuesta
  • Daniel J. Eisenstein
  • Andreu Font-Ribera
  • Jan Niklas Grieb
  • Nick Hand
  • Francisco-Shu Kitaura
  • Chirag Modi
  • Robert C. Nichol
  • Will J. Percival
  • Francisco Prada
  • Sergio Rodriguez-Torres
  • Natalie A. Roe
  • Salvador Salazar-Albornoz
  • Ariel G. Sánchez
  • Donald P. Schneider
  • Anže Slosar
  • Jeremy L. Tinker
  • Rita Tojeiro
  • Mariana Vargas-Magana
  • Jose A Vazquez

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https://arxiv.org/abs/1607.03149
Original languageEnglish
Pages (from-to)3409-3430
Number of pages22
JournalMonthly Notices of the Royal Astronomical Society
Volume464
Issue number3
Early online date16 Sep 2016
DOIs
Publication statusPublished - 1 Jan 2017

Abstract

We analyse the baryon acoustic oscillation (BAO) signal of the final Baryon Oscillation Spectroscopic Survey (BOSS) data release (DR12). Our analysis is performed in the Fourier space, using the power spectrum monopole and quadrupole. The data set includes 1198 006 galaxies over the redshift range 0.2 < z < 0.75. We divide this data set into three (overlapping) redshift bins with the effective redshifts zeff = 0.38, 0.51 and 0.61. We demonstrate the reliability of our analysis pipeline using N-body simulations as well as ∼1000 MultiDark-Patchy mock catalogues that mimic the BOSS-DR12 target selection. We apply density field reconstruction to enhance the BAO signal-to-noise ratio. By including the power spectrum quadrupole we can separate the line of sight and angular modes, which allows us to constrain the angular diameter distance DA(z) and the Hubble parameter H(z) separately. We obtain two independent 1.6 and 1.5 per cent constraints on DA(z) and 2.9 and 2.3 per cent constraints on H(z) for the low (zeff = 0.38) and high (zeff = 0.61) redshift bin, respectively. We obtain two independent 1 and 0.9 per cent constraints on the angular averaged distance DV(z), when ignoring the Alcock–Paczynski effect. The detection significance of the BAO signal is of the order of 8σ (post-reconstruction) for each of the three redshift bins. Our results are in good agreement with the Planck prediction within Λ cold dark matter. This paper is part of a set that analyses the final galaxy clustering data set from BOSS. The measurements and likelihoods presented here are combined with others in Alam et al. to produce the final cosmological constraints from BOSS.

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