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28 March 2024
 
  » arxiv » 1607.3149

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The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in Fourier-space
Florian Beutler ; 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 ; Nicholas P. Ross ; Salvador Salazar-Albornoz ; Ariel G. Sánchez ; Donald P. Schneider ; Anže Slosar ; Jeremy Tinker ; Rita Tojeiro ; Mariana Vargas-Magaña ; Jose A. Vazquez ;
Date 11 Jul 2016
AbstractWe analyse the Baryon Acoustic Oscillation (BAO) signal of the final Baryon Oscillation Spectroscopic Survey (BOSS) data release (DR12). Our analysis is performed in Fourier-space, using the power spectrum monopole and quadrupole. The dataset includes $1,198,006$ galaxies over the redshift range $0.2 < z < 0.75$. We divide this dataset 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 $sim 1000$ MultiDark-Patchy mock catalogues, which 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 $D_A(z)$ and the Hubble parameter $H(z)$ separately. We obtain two independent $1.6\%$ and $1.5\%$ constraints on $D_A(z)$ and $2.9\%$ and $2.3\%$ constraints on $H(z)$ for the low ($zeff=0.38$) and high ($zeff=0.61$) redshift bin, respectively. We obtain two independent $1\%$ and $0.9\%$ constraints on the angular averaged distance $D_V(z)$, when ignoring the Alcock-Paczynski effect. The detection significance of the BAO signal is of the order of $8sigma$ (post-reconstruction) for each of the three redshift bins. Our results are in good agreement with the Planck prediction within $Lambda$CDM. This paper is part of a set that analyses the final galaxy clustering dataset from BOSS. The measurements and likelihoods presented here are combined with others in~citet{Alam2016} to produce the final cosmological constraints from BOSS.
Source arXiv, 1607.3149
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