AIMS Seminar - New constraints on cosmological parameters from SNIa data

AIMS Research Centre
Mon, 04/04/2011 - 12:00 - 13:00
Roberto Trotta (Imperial College)


In this informal talk I will describe a new Bayesian hierarchical model for cosmological parameters constraints from SALTII lightcurve fits of SNIa data. I will demonstrate that our new method delivers constraints that are up to 40% tighter than can be obtained from the standard chi-square procedure. I will also sketch how the Bayesian approach can be applied to estimate systematic errors.