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Title: | The Clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: baryon acoustic oscillations in the Fourier space |
Author: | Beutler, Florian Seo, Hee-Jong Ross, Ashley J. McDonald, P. Saito, Shun Bolton, Adam S. Brownstein, Joel R. Chuang, Chia-Hsun Cuesta, Antonio J. Eisenstein, Daniel J. Font Ribera, Andreu Grieb, Jan Niklas Hand, Nick Kitaura, Francisco-Shu Modi, C. Nichol, Robert C. Percival, Will J. Prada, Francisco Rodríguez Torres, Sergio A. Roe, Natalie A. Ross, Nicholas P. Salazar-Albornoz, Salvador Sánchez, Ariel G. Schneider, Donald P. Slosar, Anze Tinker, Jeremy L. Tojeiro, Rita Vargas Magaña, Mariana Vázquez, Jose Alberto |
Keywords: | Cúmuls de galàxies Espectroscòpia Clusters of galaxies Spectrum analysis |
Issue Date: | 21-Jan-2017 |
Publisher: | Royal Astronomical Society |
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 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 $8\sigma$ (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. |
Note: | Reproducció del document publicat a: https://doi.org/10.1093/mnras/stw2373 |
It is part of: | Monthly Notices of the Royal Astronomical Society, 2017, vol. 464, num. 3, p. 3409-3430 |
URI: | http://hdl.handle.net/2445/119502 |
Related resource: | https://doi.org/10.1093/mnras/stw2373 |
ISSN: | 0035-8711 |
Appears in Collections: | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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665756.pdf | 3.68 MB | Adobe PDF | View/Open |
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