Extended Data Fig. 7: Marginalized and joint posterior distributions for the final age constraints measured in this analysis.
From: A gravitationally lensed supernova with an observable two-decade time delay
Two-dimensional plots show MCMC sampling points as discrete dots, with contours for the high density regions, drawn at 0.5, 1, 1.5 and 2σ levels. Marginalized (1D) distributions are shown at the top of each column, with dashed vertical lines at the mean and ± 1σ (marking 16%, 50% and 84% levels). We use the color curve posterior as the prior for light curve fitting with lens model E, and include weak priors on the absolute magnitude of a SNIa (MB) and the SALT2 color parameter (c), and set the SALT2 stretch parameter (x1) to 0.
