Orateur
Description
Accurate reconstruction of galaxy cluster masses is key to use this population of objects as cosmological probe. In this work we present a study on the hydrostatic to lensing mass scaling relation for a sample of 53 clusters, with redshifts from z = 0.05 to 1.07, for which masses have been reconstructed homogeneously. Masses for each individual cluster have been measured from reconstructed mass profiles from X-ray and lensing data, without using any observable-mass scaling relation. We calibrate the systematic scatter between the masses reconstructed with our reference analyses with respect to published results. Accounting for the systematic scatter does not change our main results, but allows propagating the uncertainties related to the mass reconstruction method or used data set. Our analysis gives an hydrostatic-to-lensing mass bias in the range of (1 − b) = 0.5 to 0.9 and a weak evidence of evolution with redshift.
