Cosmological parameters from eigenmode analysis of sloan digital sky survey galaxy redshifts

Adrian C. Pope, Takahiko Matsubara, Alexander S. Szalay, Michael R. Blanton, Daniel J. Eisenstein, Jim Gray, Bhuvnesh Jain, Neta A. Bahcall, Jon Brinkmann, Tamas Budavari, Andrew J. Connolly, Joshua A. Frieman, James E. Gunn, David Johnston, Stephen M. Kent, Robert H. Lupton, Avery Meiksin, Robert C. Nichol, Donald P. Schneider, Ryan Scranton & 6 others Michael A. Strauss, I. Szapudi, Max Tegmark, Michael S. Vogeley, David H. Weinberg, Idit Zehavi

Research output: Contribution to journalArticle

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Abstract

We present estimates of cosmological parameters from the application of the Karhunen-Loève transform to the analysis of the three-dimensional power spectrum of density fluctuations using Sloan Digital Sky Survey galaxy redshifts. We use Ωmh and fb = Ωb/ Ωm to describe the shape of the power spectrum, σ8g L for the (linearly extrapolated) normalization, and β to parameterize linear theory redshift-space distortions. On scales k ≲ 0.16 h Mpc-1, our maximum likelihood values are Ωmh = 0.264 ± 0.043, fb = 0.286 ± 0.065, σ8g L = 0.966 ± 0.048, and β= 0.45 ± 0.12. When we take a prior on Ωb from the Wilkinson Micro-wave Anisotropy Probe (WMAP), we find Ωmh = 0.207 ± 0.030, which is in excellent agreement with WMAP and the Two-Degree Field. This indicates that we have reasonably measured the gross shape of the power spectrum, but we have difficulty breaking the degeneracy between Ωmh and fb, because the baryon oscillations are not resolved in the current spectroscopic survey window function.

Original languageEnglish
Pages (from-to)655-660
Number of pages6
JournalAstrophysical Journal
Volume607
Issue number2 I
DOIs
Publication statusPublished - Jun 1 2004

Fingerprint

power spectra
Microwave Anisotropy Probe
galaxies
anisotropy
probe
baryons
transform
oscillation
oscillations
estimates
analysis
parameter
microwave
normalisation

Keywords

  • Cosmological parameters
  • Cosmology: theory
  • Galaxies: distances and redshifts
  • Large-scale structure of universe
  • Methods: statistical

ASJC Scopus subject areas

  • Space and Planetary Science
  • Nuclear and High Energy Physics

Cite this

Pope, A. C., Matsubara, T., Szalay, A. S., Blanton, M. R., Eisenstein, D. J., Gray, J., ... Zehavi, I. (2004). Cosmological parameters from eigenmode analysis of sloan digital sky survey galaxy redshifts. Astrophysical Journal, 607(2 I), 655-660. https://doi.org/10.1086/383533

Cosmological parameters from eigenmode analysis of sloan digital sky survey galaxy redshifts. / Pope, Adrian C.; Matsubara, Takahiko; Szalay, Alexander S.; Blanton, Michael R.; Eisenstein, Daniel J.; Gray, Jim; Jain, Bhuvnesh; Bahcall, Neta A.; Brinkmann, Jon; Budavari, Tamas; Connolly, Andrew J.; Frieman, Joshua A.; Gunn, James E.; Johnston, David; Kent, Stephen M.; Lupton, Robert H.; Meiksin, Avery; Nichol, Robert C.; Schneider, Donald P.; Scranton, Ryan; Strauss, Michael A.; Szapudi, I.; Tegmark, Max; Vogeley, Michael S.; Weinberg, David H.; Zehavi, Idit.

In: Astrophysical Journal, Vol. 607, No. 2 I, 01.06.2004, p. 655-660.

Research output: Contribution to journalArticle

Pope, AC, Matsubara, T, Szalay, AS, Blanton, MR, Eisenstein, DJ, Gray, J, Jain, B, Bahcall, NA, Brinkmann, J, Budavari, T, Connolly, AJ, Frieman, JA, Gunn, JE, Johnston, D, Kent, SM, Lupton, RH, Meiksin, A, Nichol, RC, Schneider, DP, Scranton, R, Strauss, MA, Szapudi, I, Tegmark, M, Vogeley, MS, Weinberg, DH & Zehavi, I 2004, 'Cosmological parameters from eigenmode analysis of sloan digital sky survey galaxy redshifts', Astrophysical Journal, vol. 607, no. 2 I, pp. 655-660. https://doi.org/10.1086/383533
Pope AC, Matsubara T, Szalay AS, Blanton MR, Eisenstein DJ, Gray J et al. Cosmological parameters from eigenmode analysis of sloan digital sky survey galaxy redshifts. Astrophysical Journal. 2004 Jun 1;607(2 I):655-660. https://doi.org/10.1086/383533
Pope, Adrian C. ; Matsubara, Takahiko ; Szalay, Alexander S. ; Blanton, Michael R. ; Eisenstein, Daniel J. ; Gray, Jim ; Jain, Bhuvnesh ; Bahcall, Neta A. ; Brinkmann, Jon ; Budavari, Tamas ; Connolly, Andrew J. ; Frieman, Joshua A. ; Gunn, James E. ; Johnston, David ; Kent, Stephen M. ; Lupton, Robert H. ; Meiksin, Avery ; Nichol, Robert C. ; Schneider, Donald P. ; Scranton, Ryan ; Strauss, Michael A. ; Szapudi, I. ; Tegmark, Max ; Vogeley, Michael S. ; Weinberg, David H. ; Zehavi, Idit. / Cosmological parameters from eigenmode analysis of sloan digital sky survey galaxy redshifts. In: Astrophysical Journal. 2004 ; Vol. 607, No. 2 I. pp. 655-660.
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AU - Eisenstein, Daniel J.

AU - Gray, Jim

AU - Jain, Bhuvnesh

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AU - Connolly, Andrew J.

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AU - Gunn, James E.

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