Testing general relativity with the multipole spectra of the SPSS luminous red galaxies

Kazuhiro Yamamoto, Takahiro Sato, Gert Hütsi

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

As a test of general relativity on cosmological scales, we measure the γ parameter for the growth rate of density perturbations using the redshift-space distortion of the luminous red galaxies in the Sloan Digital Sky Survey (SDSS). Assuming the cosmological constant model, which matches the results of the WMAP experiment, we find γ = 0.62 + 1.8(σ8 - 0.8) ±0.11 at 1-sigma confidence level, which is consistent with the prediction of general relativity, γ 0.55 ∼ 0.56. Rather high value of σ8(≥ 0.87) is required to be consistent with the prediction of the cosmological DGP model, γ 0.68.

Original languageEnglish
Pages (from-to)609-614
Number of pages6
JournalProgress of Theoretical Physics
Volume120
Issue number3
DOIs
Publication statusPublished - Sep 1 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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