The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Cosmological implications of the large-scale two-point correlation function
Author
Sánchez, Ariel G.; Scóccola, Claudia G.; Ross, A. J.; Percival, Will J.; Manera, M.; Montesano, F.; Mazzalay, X.; Cuesta, A. J.; Eisenstein, D. J.; Kazin, E.; Mcbride, C. K.; Mehta, K.; Montero-Dorta, Antonio D.; Padmanabhan, N.; Prada, F.; Rubiño-Martín, J. A.; Tojeiro, R.; Xu, X.; Magaña, M. Vargas; Aubourg, Eric; Bahcall, N. A.; Bailey, S.; Bizyaev, D.; Bolton, A. S.; Brewington, H.; Brinkmann, J.; Brownstein, J. R.; Gott, J. Richard; Hamilton, J. C.; Ho, S.; Honscheid, K.; Labatie, Antoine; Malanushenko, Elena; Maraston, C.; Muna, D.; Nichol, Robert C.; Oravetz, Daniel; Pan, Kaike; Ross, N. P.; Roe, N. A.; Reid, Beth; Schlegel, D. J.; Shelden, A.; Schneider, D. P.; Simmons, A.; Skibba, R.; Snedden, S.; Thomas, D.; Tinker, J.; Wake, D. A.; Weaver, B. A.; Weinberg, David H.; White, Martin; Zehavi, Idit; Zhao, G.Entity
UAM. Departamento de Física TeóricaPublisher
Oxford University Press; Royal Astronomical SocietyDate
2012-09-01Citation
10.1111/j.1365-2966.2012.21502.x
Monthly Notices of the Royal Astronomical Society 425.1 (2012): 415-437
ISSN
0035-8711 (print); 1365-2966 (online)DOI
10.1111/j.1365-2966.2012.21502.xFunded by
CGS and JAR acknowledge funding from project AYA2010-21766-C03-02 of the Spanish Ministry of Science and Innovation (MICINN). AJR is grateful to the UK Science and Technology Facilities Council for financial support through the grant ST/I001204/1. WP is grateful for support from the UK Science and Technology Facilities Research Council, the Leverhulme Trust and the European Research Council. FP acknowledges support from the Spanish MICINNs Consolider grant MultiDark CSD2009-00064. JAR is a Ramón y Cajal fellow of the Spanish Ministry of Science and Innovation (MICINN)Editor's Version
http://dx.doi.org/10.1111/j.1365-2966.2012.21502.xSubjects
Cosmological parameters; Large-scale structure of Universe; FísicaNote
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2012 RAS © 2012 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.Rights
© 2012 RAS; © 2012 The AuthorsAbstract
We obtain constraints on cosmological parameters from the spherically averaged redshiftspace correlation function of the CMASS Data Release 9 (DR9) sample of the Baryonic Oscillation Spectroscopic Survey (BOSS). We combine this information with additional data from recent cosmic microwave background (CMB), supernova and baryon acoustic oscillation measurements. Our results show no significant evidence of deviations from the standard flat Λ cold dark matter model, whose basic parameters can be specified by Ωm = 0.285 ± 0.009, 100Ωb = 4.59 ± 0.09, ns = 0.961 ± 0.009, H0 = 69.4 ± 0.8kms-1Mpc-1 and σ8 = 0.80 ± 0.02. The CMB+CMASS combination sets tight constraints on the curvature of the Universe, with Ωk = -0.0043 ± 0.0049, and the tensor-to-scalar amplitude ratio, for which we find r < 0.16 at the 95per cent confidence level (CL). These data show a clear signature of a deviation from scale invariance also in the presence of tensor modes, with ns < 1 at the 99.7per cent CL. We derive constraints on the fraction of massive neutrinos of fν < 0.049 (95per cent CL), implying a limit of ∑mν < 0.51eV. We find no signature of a deviation from a cosmological constant from the combination of all data sets, with a constraint of wDE = -1.033 ± 0.073 when this parameter is assumed time-independent, and no evidence of a departure from this value when it is allowed to evolve as wDE(a) = w0 + wa(1 - a). The achieved accuracy on our cosmological constraints is a clear demonstration of the constraining power of current cosmological observations
Files in this item
Google Scholar:Sánchez, Ariel G.
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Scóccola, Claudia G.
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Ross, A. J.
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Percival, Will J.
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Manera, M.
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Montesano, F.
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Mazzalay, X.
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Cuesta, A. J.
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Eisenstein, D. J.
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Kazin, E.
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Mcbride, C. K.
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Mehta, K.
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Montero-Dorta, Antonio D.
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Padmanabhan, N.
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Prada, F.
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Rubiño-Martín, J. A.
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Tojeiro, R.
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Xu, X.
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Magaña, M. Vargas
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Aubourg, Eric
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Bahcall, N. A.
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Bailey, S.
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Bizyaev, D.
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Bolton, A. S.
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Brewington, H.
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Brinkmann, J.
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Brownstein, J. R.
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Gott, J. Richard
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Hamilton, J. C.
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Ho, S.
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Honscheid, K.
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Labatie, Antoine
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Malanushenko, Elena
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Maraston, C.
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Muna, D.
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Nichol, Robert C.
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Oravetz, Daniel
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Pan, Kaike
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Ross, N. P.
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Roe, N. A.
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Reid, Beth
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Schlegel, D. J.
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Shelden, A.
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Schneider, D. P.
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Simmons, A.
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Skibba, R.
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Snedden, S.
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Thomas, D.
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Tinker, J.
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Wake, D. A.
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Weaver, B. A.
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Weinberg, David H.
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White, Martin
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Zehavi, Idit
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Zhao, G.
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