Testing Screening Mechanisms with Mass Profiles of Galaxy Clusters

Abstract

We present MG-MAMPOSSt, a license-free code to constrain modified gravity models by reconstructing the mass profile of galaxy clusters with the kinematics of the cluster’s member galaxies. We describe the main features of the code and we show the capability of the method when the kinematic information is combined with lensing data. We discuss recent results and forecasts on two classes of models currently implemented in the code, characterized by different screening mechanisms, namely, chameleon and Vainshtein screening. We further explore the impact of possible systematics in view of application to the data from upcoming surveys. This paper summarizes the results presented at the ALTECOSMOFUN’21 conference and is based upon the works published in Pizzuti et al. 2020, Pizzuti et al. 2021 and Pizzuti et al. 2022.