Orateur
Constantin Payerne
(LPSC (IN2P3))
Description
Constraining the mass-observable relations is a key ingredient for cluster cosmology. In particular, for optical surveys such as the Rubin LSST, the cluster abundance relies on the determination of the mass-richness relation. In that context, weak gravitational lensing by galaxy clusters can be used as a powerful tool to estimate cluster masses. We use the cluster-galaxy weak lensing in the simulated galaxy catalogs of the Data Challenge 2 (DC2) of the Dark Energy Science Collaboration to estimate the weak lensing mass-richness relation for RedMapper-detected DC2 galaxy clusters. In this presentation, we focus more particularly on how modelling choices of the weak lensing signal and photometric redshifts may impact the mass estimation.
Auteur principal
Constantin Payerne
(LPSC (IN2P3))
