Bayesian analysis results for the parameters of the model [(partcov*xstar500)*(xstar5000*pow)] given the 2009 data. The corner plot reports the 1D (histograms) and 2D (credible contours) posterior probability distributions for the model parameters. The top right panels report the posterior probability distributions of the theoretical model (top) and of the model convolved with the instrumental response, with the binned EPIC-pn data overplotted (bottom).