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Fig. 5


Left panel: two-dimensional confidence limits on Ωm and ΩΛ from a “blind” analysis of the τCDM HVP simulation (Jenkins et al. 2001). Contours are plotted for ℒ/ℒmin < 2.3, 6.17 corresponding to 68 and 95 per cent c.l. for a multivariate Gaussian distribution with 2 degrees of freedom. The relevant one-dimensional marginalized constraint is shown in the legend. The clustering ratio ηg,R(r,p) is estimated using R = 14  h-1  Mpc and r = 3R. For the best-fitting cosmology we measure ηg,R(r,pf) = 0.0294±0.0017 where the error is evaluated via 30 jackknife resampling of the data, excluding each time a sky area of 36×19.5 deg2. Dirac delta priors are taken of Ωbh2, H0, and ns, that are centred on the simulated values. Right panel: same as before, but now contours represent the joint likelihood analysis of 40 independent ΛCDM mock catalogues simulating the SDSS LRG sample. For the best-fitting cosmology we find ηg,R(r,pf) = 0.0573±0.0008, where the error, computed as the s.d. of the mean of 40 measurements, includes the contribution from cosmic variance.

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