Figure 1: The correlation function in physical space for the best-fit power-law CDM model (dotted, black line) from Spergel et al. (2003), and for the best-fit Einstein-de Sitter models ) from Blanchard et al. (2003) having a neutrino component (solid, green line) and a pressureless (w = 0) quintessence component (dot-dashed, blue line). An acoustic peak is seen for all models, having a similar amplitude and on a similar physical scale, as can be anticipated from the physical origin of this peak. | |
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Figure 2: The correlation function in observed (redshift) space for the same models as in Fig. 1, but with amplitude adjusted to the best fitting value. For Einstein-de Sitter models, the spatial scales are shifted for the geometrical factor (according to Eq. (2) of Eisenstein et al. 2005) relative to a dominated cosmology. The position of the acoustic peak (in h^{-1} Mpc) for E-deS models does not match the observations, unlike the CDM model, because a lower value of the Hubble constant is needed to fit the CMB data. In addition, E-deS models exhibit a lack of power on large scales (30-100 h^{-1} Mpc) when normalized optimally to the observations. | |
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