Cosmological Parameters from Eigenmode Analysis of Sloan Digital Sky Survey Galaxy Redshifts | Zendy

Adrian Pope | Zendy; Takahiko Matsubara | Zendy; Alexander S. Szalay | Zendy; Michael R. Blanton | Zendy; Daniel J. Eisenstein | Zendy; Jim Gray | Zendy; Bhuvnesh Jain | Zendy; Neta A. Bahcall | Zendy; J. Brinkmann | Zendy; Tamás Budavári | Zendy; Andrew J. Connolly | Zendy; Joshua A. Frieman | Zendy; James E. Gunn | Zendy; David Johnston | Zendy; S. Kent | Zendy; Robert H. Lupton | Zendy; Avery Meiksin | Zendy; Robert C. Nichol | Zendy; Donald P. Schneider | Zendy; Ryan Scranton | Zendy; Michael A. Strauss | Zendy; István Szapudi | Zendy; Max Tegmark | Zendy; Michael S. Vogeley | Zendy; David H. Weinberg | Zendy; Idit Zehavi | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Cosmological Parameters from Eigenmode Analysis of Sloan Digital Sky Survey Galaxy Redshifts

Author(s) -

Adrian Pope,

Takahiko Matsubara,

Alexander S. Szalay,

Michael R. Blanton,

Daniel J. Eisenstein,

Jim Gray,

Bhuvnesh Jain,

Neta A. Bahcall,

J. Brinkmann,

Tamás Budavári,

Andrew J. Connolly,

Joshua A. Frieman,

James E. Gunn,

David Johnston,

S. Kent,

Robert H. Lupton,

Avery Meiksin,

Robert C. Nichol,

Donald P. Schneider,

Ryan Scranton,

Michael A. Strauss,

István Szapudi,

Max Tegmark,

Michael S. Vogeley,

David H. Weinberg,

Idit Zehavi

Publication year - 2004

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/383533

Subject(s) - omega , cmb cold spot , physics , spectral density , astrophysics , redshift , sky , galaxy , baryon , baryon acoustic oscillations , sigma , normalization (sociology) , degeneracy (biology) , cosmic microwave background , astronomy , statistics , quantum mechanics , mathematics , anisotropy , bioinformatics , sociology , anthropology , biology

We present estimates of cosmological parameters from the application of theKarhunen-Loeve transform to the analysis of the 3D power spectrum of densityfluctuations using Sloan Digital Sky Survey galaxy redshifts. We use Omega_m*hand f_b = Omega_b/Omega_m to describe the shape of the power spectrum, sigma8for the (linearly extrapolated) normalization, and beta to parametrize lineartheory redshift space distortions. On scales k < 0.16 h/Mpc, our maximumlikelihood values are Omega_m*h = 0.264 +/-0.043, f_b = 0.286 +/- 0.065, sigma8= 0.966 +/- 0.048, and beta = 0.45 +/- 0.12. When we take a prior on Omega_bfrom WMAP, we find Omega_m*h = 0.207 +/- 0.030, which is in excellent agreementwith WMAP and 2dF. This indicates that we have reasonably measured the grossshape of the power spectrum but we have difficulty breaking the degeneracybetween Omega_m*h and f_b because the baryon oscillations are not resolved inthe current spectroscopic survey window function.Comment: LaTeX, 8 pages, 3 figures; figures updated, references added, minor changes to text; accepted by Ap

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research