Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 425, Issue 1, Pages 415-437Publisher
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2012.21502.x
Keywords
cosmological parameters; large-scale structure of Universe
Categories
Funding
- Spanish Ministry of Science and Innovation (MICINN) [AYA2010-21766-C03-02]
- UK Science and Technology Facilities Council [ST/I001204/1]
- UK Science and Technology Facilities Research Council
- Leverhulme Trust
- European Research Council
- Spanish MICINNs Consolider grant MultiDark [CSD2009-00064]
- Alfred P. Sloan Foundation
- National Science Foundation
- US Department of Energy
- University of Arizona
- Brazilian Participation Group
- Brookhaven National Laboratory
- University of Cambridge
- Carnegie Mellon University
- University of Florida
- French Participation Group
- German Participation Group
- Harvard University
- Instituto de Astrofisica de Canarias
- Michigan State/Notre Dame/JINA Participation Group
- Johns Hopkins University
- Lawrence Berkeley National Laboratory
- Max Planck Institute for Astrophysics
- Max Planck Institute for Extraterrestrial Physics
- New Mexico State University
- New York University
- Ohio State University
- Pennsylvania State University
- University of Portsmouth
- Princeton University
- Spanish Participation Group
- University of Tokyo
- University of Utah
- Vanderbilt University
- University of Virginia
- University of Washington
- Yale University
- Science and Technology Facilities Council [ST/I001204/1, ST/H002774/1] Funding Source: researchfish
- STFC [ST/I001204/1, ST/H002774/1] Funding Source: UKRI
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We obtain constraints on cosmological parameters from the spherically averaged redshift-space 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 ? cold dark matter model, whose basic parameters can be specified by Om = 0.285 +/- 0.009, 100?Ob = 4.59 +/- 0.09, ns = 0.961 +/- 0.009, H0 = 69.4 +/- 0.8?km?s-1?Mpc-1 and s8 = 0.80 +/- 0.02. The CMB+CMASS combination sets tight constraints on the curvature of the Universe, with Ok = -0.0043 +/- 0.0049, and the tensor-to-scalar amplitude ratio, for which we find r < 0.16 at the 95?per 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 99.7?per cent CL. We derive constraints on the fraction of massive neutrinos of f? < 0.049 (95?per cent CL), implying a limit of ?m? < 0.51?eV. 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.
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