The clustering of galaxies in the SDSS‐III Baryon Oscillation Spectroscopic Survey: cosmological implications of the large‐scale two‐point correlation function

By Ariel G. Sánchez, C. Scóccola, A. Ross, Will J. Percival, Marc Manera, F. Montesano, X. Mazzalay, A. Cuesta, Daniel J. Eisenstein, E. Kazin and 46 more. 2012

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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 Λ cold dark matter model, whose basic parameters can be specified by Ωm = 0.285 ± 0.009, 100 Ωb = 4.59 ± 0.09, ns = 0.961 ± 0.009, H0 = 69.4 ± 0.8 km s−1 Mpc−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 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 fν < 0.049 (95 per cent CL), implying a limit of ∑mν < 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.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/ae4cd872ac447b42bcf22b40a39880b8f2e29931

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Citations in the corpus

THE BARYON OSCILLATION SPECTROSCOPIC SURVEY OF SDSS-III (2012, methodology): “For example, Reid et al. (2012) measure the growth of structure and expansion rate at z = 0.57 from anisotropic clustering, and Sánchez et al. (2012) explore the cosmological implications of the large-scale two-point correlation function.”
SPECTRAL CLASSIFICATION AND REDSHIFT MEASUREMENT FOR THE SDSS-III BARYON OSCILLATION SPECTROSCOPIC SURVEY (2012, methodology): “…data for DR922, and the classification and redshift results delivered by this code have been used for recently published BOSS DR9-sample cosmological analyses (Anderson et al. 2012; Manera et al. 2012; Nuza et al. 2012; Reid et al. 2012; Ross et al. 2012a; Sanchez et al. 2012; Tojeiro et al. 2012).”
The clustering of galaxies in the sdss-iii baryon oscillation spectroscopic survey: Baryon acoustic oscillations in the data release 9 spectroscopic galaxy sample (2012, background): “Further constraints from fitting models to the full shape of the correlation function are presented in Sanchez et al. (2012).”
CFHTLenS: combined probe cosmological model comparison using 2D weak gravitational lensing (2012, background): “Both BOSS and SNIa are geometrical probes, and adding SNLS to WMAP7+BOSS yields little improvement on cosmological parameter constraints with the exception of w (Sánchez et al. 2012).”
NINE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP) OBSERVATIONS: COSMOLOGICAL PARAMETER RESULTS (2012, methodology): “This result is used to constrain cosmological models in Sánchez et al. (2012).”
Improved WiggleZ Dark Energy Survey Distance Measurements to z = 1 with Reconstruction of the Baryonic Acoustic Feature (2014, unknown): “The reason for this is that when assuming a theoretical model for ξ its full shape may be used as a standard ruler (e.g. see Eisenstein et al. 2005 ; S´anchez et al. 2012, 2013).”
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Cosmological implications of the configuration-space clustering wedges (2016, background): “…about the nature of dark energy, potential deviations from the predictions of general relativity (GR), the physics of inflation, neutrino masses, etc. (Percival et al. 2002, 2010; Tegmark et al. 2004; Sánchez et al. 2006, 2009, 2012; Blake et al. 2011; Parkinson et al. 2012).”
SDSS-III Baryon Oscillation Spectroscopic Survey Data Release 12: galaxy target selection and large-scale structure catalogues (2015, methodology): “The clustering was compared with simulations in Nuza et al. (2013), and with full model fits in Sanchez et al. (2012).”
The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: single-probe measurements and the strong power of f(z)σ8(z) on constraining dark energy (2013, background): “Sanchez et al. (2012) measuredα = 1.015± 0.019 from the full shape of the correlation function (monopole).”
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 (2013, methodology): “…and correlation functions measured from N-body simulations (e.g. Sánchez et al. 2008; Montesano, Sánchez & Phleps 2010) and has been applied to the analysis of numerous galaxy samples (Sánchez et al. 2009, 2012, 2013; Beutler et al. 2011; Blake et al. 2011; Montesano, Sánchez & Phleps 2012).”
The clustering of galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: testing deviations from Λ and general relativity using anisotropic clustering of galaxies (2012, methodology): “Sanchez et al. (2012) derived cosmological constraints using the full shape of the measured spherically-averaged correlation function, while Reid etal.”
The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: analysis of potential systematics (2012, methodology): “We therefore believe that if our treatment of the data yields robust α̃ values, robust measurements of both the BAO position and mh2 will be obtained when more sophisticated models are applied, as in Anderson et al. (2012) and Sanchez et al. (2012).”
The clustering of galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: constraints on primordial non-Gaussianity (2012, methodology): “The clustering of this data set has been extensively studied (Anderson et al. 2012; Nuza et al. 2012; Reid et al. 2012; Sánchez et al. 2012; Tojeiro et al. 2012).”
A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND DAMPING TAIL FROM THE 2500-SQUARE-DEGREE SPT-SZ SURVEY (2012, methodology): “Prior to the current SPT analysis, the tightest published constraint on r was reported by Sánchez et al. (2012), who used the combination of datasets from BOSS-CMASS, WMAP7, and K11 to constrain r < 0.16 at 95% confidence.”
The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measurements of the growth of structure and expansion rate at z = 0.57 from anisotropic clustering (2012, methodology): “This is the same cosmology as assumed in White et al. (2011) and in our companion papers (Anderson et al. 2012; Manera et al. 2012; Ross et al. 2012; Sanchez et al. 2012; Samushia et al. 2012b; Tojeiro et al. 2012).”
The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey:a large sample of mock galaxy catalogues (2012, methodology): “These are the data used in a number of recent cosmological analyses (Anderson et al. 2012, Sanchez et al. 2012; Samushia et al. 2012; Reid et al. 2012; Nuza et al 2012; Tojeiro et al. 2012a,b; Ross et al. 2012).”