Planck 2015 results

Abstract

The Planck 2015 cosmogical results are discussed with an emphasis on the improvements compared to the last data release, and on the methodology used to extract the parameters, both for the likelihood building and for the statistical method. As far as the base ?CDM model is concerned, the implications of the cold dark matter density measurement in SUSY scenarios is illustrated. For the results on the extensions of ?CDM, they are given for the neutrinos sector: the CMB being sensitive to the sum of the neutrino masses and to the effective number of relativistic degrees of freedom. Finally on the primordial gravitational waves side: implications in the strings parameters space derived from a limit set of the gravitational wave energy density is shown, as well as the limit on the tension over scalar ratio, r, coming from a combined analysis with BICEP.