Figure 9
Figure 9: The allowed range of the parameters H0, Ωm, from the 2013 Planck data, is shown as a series of points. A flat Universe is assumed, together with information from the Planck fluctuation temperature spectrum, CMB lensing information from Planck, and WMAP polarization observations. The colour coding reflects different values of ns, the spectral index of scalar perturbations as a function of spatial scale at early times. Image reproduced with permission from [2], copyright by ESO.