@article{7a88a977fdef4941aa015fb7c3bcf52a, title = "Cosmological constraints from the clustering of the Sloan Digital Sky Survey DR7 luminous red galaxies", abstract = "We present the power spectrum of the reconstructed halo density field derived from a sample of luminous red galaxies (LRGs) from the Sloan Digital Sky Survey (SDSS) Seventh Data Release (DR7). The halo power spectrum has a direct connection to the underlying dark matter power for k <= 0.2 h Mpc(-1), well into the quasi-linear regime. This enables us to use a factor of similar to 8 more modes in the cosmological analysis than an analysis with k(max) = 0.1 h Mpc(-1), as was adopted in the SDSS team analysis of the DR4 LRG sample. The observed halo power spectrum for 0.02< k < 0.2 h Mpc(-1) is well fitted by our model: chi(2) = 39.6 for 40 degrees of freedom for the best-fitting Lambda cold dark matter (Lambda CDM) model. We find Omega(m)h(2)(n(s)/0.96)(1.2) = 0.141(-0.012+)(0.010) for a power-law primordial power spectrum with spectral index ns and Omega(b)h(2) = 0.022 65 fixed, consistent with cosmic microwave background measurements. The halo power spectrum also constrains the ratio of the comoving sound horizon at the baryon-drag epoch to an effective distance to z = 0.35: r(s)/DV(0.35) = 0.1097(-0.0042)(+0.0039). Combining the halo power spectrum measurement with the Wilkinson Microwave Anisotropy Probe (WMAP) 5 year results, for the flat Lambda CDM model we find Omega(m) = 0.289 +/- 0.019 and H-0 = 69.4 +/- 1.6 kms(-1) Mpc(-1). Allowing for massive neutrinos in Lambda CDM, we find Sigma m(nu) < 0.62 eV at the 95 per cent confidence level. If we instead consider the effective number of relativistic species N-eff as a free parameter, we find N-eff = 4.8(-1.7)(+1.8). Combining also with the Kowalski et al. supernova sample, we find Omega(tot) = 1.011 +/- 0.009 and w = -0.99 +/- 0.11 for an open cosmology with constant dark energy equation of state w. The power spectrum and a module to calculate the likelihoods are publicly available at http://lambda.gsfc.nasa.gov/toolbox/lrgdr/.", author = "Reid, {Beth A.} and Percival, {Will J.} and Eisenstein, {Daniel J.} and Licia Verde and Spergel, {David N.} and Skibba, {Ramin A.} and Bahcall, {Neta A.} and Tamas Budavari and Frieman, {Joshua A.} and Masataka Fukugita and Gott, {J. Richard} and Gunn, {James E.} and Zeljko Ivezic and Knapp, {Gillian R.} and Kron, {Richard G.} and Lupton, {Robert H.} and McKay, {Timothy A.} and Avery Meiksin and Nichol, {Robert C.} and Pope, {Adrian C.} and Schlegel, {David J.} and Schneider, {Donald P.} and Chris Stoughton and Strauss, {Michael A.} and Szalay, {Alexander S.} and Max Tegmark and Vogeley, {Michael S.} and Weinberg, {David H.} and York, {Donald G.} and Idit Zehavi", year = "2010", month = may, day = "1", doi = "10.1111/j.1365-2966.2010.16276.x", language = "English", volume = "404", pages = "60--85", journal = "Monthly Notices of the Royal Astronomical Society ", issn = "0035-8711", publisher = "Oxford University Press", number = "1", }