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2017-01-21

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/119502

The Clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: baryon acoustic oscillations in the Fourier space

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https://doi.org/10.1093/mnras/stw2373

Resum

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.

Matèries

Cúmuls de galàxies, Espectroscòpia

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Clusters of galaxies, Spectrum analysis

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Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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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. The Clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: baryon acoustic oscillations in the Fourier space. _Monthly Notices of the Royal Astronomical Society_. 2017. Vol. 464, núm. 3, pàgs. 3409-3430. [consulta: 31 de gener de 2026]. ISSN: 0035-8711. [Disponible a: https://hdl.handle.net/2445/119502]

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