Cosmological parameters from SDSS and WMAP
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Tegmark, Max
Strauss, Michael A.
Blanton, Michael R.
Abazajian, Kevork
Dodelson, Scott
Sandvik, Havard
Wang, Xiaomin
Weinberg, David H.
Zehavi, Idit
Bahcall, Neta A.
Hoyle, Fiona
Schlegel, David
Scoccimarro, Roman
Vogeley, Michael S.
Berlind, Andreas
Budavari, Tamás
Connolly, Andrew
Frieman, Joshua A.
Gunn, James E.
Hui, Lam
Jain, Bhuvnesh
Johnston, David
Kent, Stephen
Lin, Huan
Nakajima, Reiko
Nichol, Robert C.
Ostriker, Jeremiah P.
Pope, Adrian
Scranton, Ryan
Seljak, Uroš
Sheth, Ravi K.
Stebbins, Albert
Szalay, Alexander S.
Szapudi, István
Xu, Yongzhong
Annis, James
Brinkmann, J.
Burles, Scott
Castander, Francisco J.
Csabai, Istvan
Loveday, Jon
Doi, Mamoru
Fukugita, Masataka
Gillespie, Bruce
Hennessy, Greg
Hogg, David W.
Ivezic, Zeljko
Knapp, Gillian R.
Lamb, Don Q.
Lee, Brian C.
Lupton, Robert H.
McKay, Timothy A.
Kunszt, Peter
Munn, Jeffrey A.
O’Connell, Liam
Peoples, John
Pier, Jeffrey R.
Richmond, Michael
Rockosi, Constance
Schneider, Donald P.
Stoughton, Christopher
Tucker, Douglas L.
Vanden Berk, Daniel E.
Yanny, Brian
York, Donald G.
Note: Order does not necessarily reflect citation order of authors.
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https://doi.org/10.1103/physrevd.69.103501Metadata
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Tegmark, Max, Michael A. Strauss, Michael R. Blanton, Kevork Abazajian, Scott Dodelson, Havard Sandvik, Xiaomin Wang, et al. 2004. “Cosmological Parameters from SDSS and WMAP.” Physical Review D 69 (10) (May 5). doi:10.1103/physrevd.69.103501.Abstract
We measure cosmological parameters using the three-dimensional power spectrum P(k) from over 200,000 galaxies in the Sloan Digital Sky Survey (SDSS) in combination with WMAP and other data. Our results are consistent with a ``vanilla'' flat adiabatic Lambda-CDM model without tilt (n=1), running tilt, tensor modes or massive neutrinos. Adding SDSS information more than halves the WMAP-only error bars on some parameters, tightening 1 sigma constraints on the Hubble parameter from h~0.74+0.18-0.07 to h~0.70+0.04-0.03, on the matter density from Omega_m~0.25+/-0.10 to Omega_m~0.30+/-0.04 (1 sigma) and on neutrino masses from <11 eV to <0.6 eV (95%). SDSS helps even more when dropping prior assumptions about curvature, neutrinos, tensor modes and the equation of state. Our results are in substantial agreement with the joint analysis of WMAP and the 2dF Galaxy Redshift Survey, which is an impressive consistency check with independent redshift survey data and analysis techniques. In this paper, we place particular emphasis on clarifying the physical origin of the constraints, i.e., what we do and do not know when using different data sets and prior assumptions. For instance, dropping the assumption that space is perfectly flat, the WMAP-only constraint on the measured age of the Universe tightens from t0~16.3+2.3-1.8 Gyr to t0~14.1+1.0-0.9 Gyr by adding SDSS and SN Ia data. Including tensors, running tilt, neutrino mass and equation of state in the list of free parameters, many constraints are still quite weak, but future cosmological measurements from SDSS and other sources should allow these to be substantially tightened.Terms of Use
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