![]() ![]() The tension between our result and GR can be traced back to a tension in the clustering amplitude σ 8 between CMASS and Planck. Combining our data set with Planck to test General Relativity (GR) through the simple γ-parametrization, where the growth rate is given by f(z) = Ω ^_m(z), reveals a ∼2σ tension between the data and the prediction by GR. We did not find significant systematic uncertainties for D V/r s or F AP. We find that such systematics will lead to 3.1 per cent uncertainty for fσ 8 if we limit our fitting range to k = 0.01-0.20 h Mpc -1, where the statistical uncertainty is expected to be three times larger. In order to ensure this, we perform a detailed systematics study against CMASS mock galaxy catalogues and N-body simulations. We emphasize that our constraints are robust against possible systematic uncertainties. Cross-correlation of wmap 3rd year and the sdss dr4 galaxy survey: new evidence for dark. Together, these signals allow us to constrain the distance ratio D V(z eff)/r s(z d) = 13.89 ± 0.18, the Alcock-Paczynski parameter F AP(z eff) = 0.679 ± 0.031 and the growth rate of structure f (z eff)σ 8(z eff) = 0.419 ± 0.044 at the effective redshift z eff = 0.57. Here we focus on modeling redshift space distortions in xips. The main cosmological signals exploited in our analysis are the baryon acoustic oscillations and the signal of redshift space distortions, both of which are distorted by the Alcock-Paczynski effect. We measure the multipole power spectra in a self-consistent manner for the first time in the sense that we provide a proper way to treat the survey window function and the integral constraint, without the commonly used assumption of an isotropic power spectrum and without the need to split the survey into subregions. We perform our analysis in Fourier space using a power spectrum estimator suggested by Yamamoto et al. We analyse the anisotropic clustering of the Baryon Oscillation Spectroscopic Survey (BOSS) CMASS Data Release 11 (DR11) sample, which consists of 690 827 galaxies in the redshift range 0.43 < z < 0.7 and has a sky coverage of 8498 deg 2. ![]()
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