Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/101738
Title: The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological implications of the full shape of the clustering wedges in the data release 10 and 11 galaxy samples
Author: Sanchez, Ariel G.
Montesano, Francesco
Kazin, Eyal A.
Aubourg, Eric
Beutler, Florian
Brinkmann, Jon
Brownstein, Joel R.
Cuesta, Antonio J.
Dawson, Kyle S.
Eisenstein, Daniel J.
Ho, Shirley
Honscheid, Klaus
Manera, M.
Maraston, Claudia
McBride, Cameron K.
Percival, W.J.
Ross, Ashley J.
Samushia, Lado
Schlegel, D.J.
Schneider, D.P.
Skibba, R.
Thomas, D.
Tinker, J. L.
Tojeiro, Rita
Wake, D. A.
Weaver, Benjamin A.
White, M.
Zehavi, I.
Keywords: Cosmologia
Observacions astronòmiques
Astrofísica
Cosmology
Astronomical observations
Astrophysics
Issue Date: 1-Apr-2014
Publisher: Royal Astronomical Society
Abstract: We explore the cosmological implications of the angle-averaged correlation function, xi(s), and the clustering wedges, xi⊥(s) and xi||(s), of the LOWZ and CMASS galaxy samples from Data Releases 10 and 11 of the Sloan Digital Sky Survey III (SDSS-III) Baryon Oscillation Spectroscopic Survey. Our results show no significant evidence for a deviation from the standard Lambda cold dark matter model. The combination of the information from our clustering measurements with recent data from the cosmic microwave background is sufficient to constrain the curvature of the Universe to Omegak = 0.0010 ± 0.0029, the total neutrino mass to ∑mnu < 0.23 eV (95 per cent confidence level), the effective number of relativistic species to Neff = 3.31 ± 0.27 and the dark energy equation of state to wDE = -1.051 ± 0.076. These limits are further improved by adding information from Type Ia supernovae and baryon acoustic oscillations from other samples. In particular, this data set combination is completely consistent with a time-independent dark energy equation of state, in which case we find wDE = -1.024 ± 0.052. We explore the constraints on the growth rate of cosmic structures assuming f(z) = Omegam(z)gamma and obtain gamma = 0.69 ± 0.15, consistent with the predictions of general relativity of gamma = 0.55.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1093/mnras/stu342
It is part of: Monthly Notices of the Royal Astronomical Society, 2014, vol. 440, num. 3, p. 2692-2713
Related resource: http://dx.doi.org/10.1093/mnras/stu342
URI: http://hdl.handle.net/2445/101738
ISSN: 0035-8711
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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