Evidence of the accelerated expansion of the Universe from weak lensing tomography with COSMOS

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Table 2:

Constraints on $\sigma _8\left (\Omega _{\rm m}/0.3\right )^{\alpha }$ , $\Omega _{\rm m}$ , $\Omega _{\rm DE}$ , and w from the COSMOS data for different cosmological models and analysis schemes.
Cosmology	Analysis	$\alpha$	$\sigma _8\left (\Omega _{\rm m}/0.3\right )^{\alpha }$	$\Omega _{\rm m}$	$\Omega _{\rm DE}$	w
Flat $\Lambda$ CDM	3D	0.51	$0.79\pm 0.09$	$\rm0.32^{+0.34}_{-0.11}$	$\rm0.68^{+0.11}_{-0.34}$	-1
Flat $\Lambda$ CDM	2D	0.62	$0.68\pm 0.11$	$\rm0.30^{+0.44}_{-0.15}$	$\rm0.70^{+0.15}_{-0.44}$	-1
General $\Lambda$ CDM	3D	0.77	$0.74\pm 0.12$	$\rm0.43^{+0.40}_{-0.19}$	$\rm0.97^{+0.39}_{-0.60}$	-1
Flat wCDM	3D	0.47	$0.79\pm 0.09$	$\rm0.30^{+0.39}_{-0.11}$	$\rm0.70^{+0.11}_{-0.39}$	$\rm -1.23^{+0.79}_{-0.50}$

Notes. Here we use our default priors and quote the marginalized mean and 68.3% confidence limits (16th and 84th percentiles) assuming non-linear power spectrum corrections according to Smith et al. (2003) and the description given in Sect. 6.2. Our analysis of the Millennium Simulation (Sect. 6.4) suggests that the $\sigma _8$ -estimates should be reduced by a factor $\times$ 0.95 due to biased model predictions for the non-linear power spectrum and reduced shear corrections. The power-law slopes $\alpha$ have typical fit uncertainties of $\sigma_\alpha\simeq 0.02$ .

Source LaTeX | All tables | In the text

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