Type: Talk
Session: Galaxies Science from Dwarfs to Clusters
Author: Asmaa Mazoun

Abstract: Galaxy cluster abundance is an important probe of the universe’s large-scale structure (LSS). It is sensitive to the density of matter and matter density fluctuations, making it relevant for testing beyond-CDM models. Cluster cosmology needs an establishment of a link between the observables and the underlying halo mass. This can be effectively done using weak Lensing data. In my talk, I will present to you constraints on an interacting dark matter with dark radiation model (IDM-DR) from ongoing and upcoming galaxy cluster surveys, namely, SPT-3G and CMB-S4, combined with a new generation of weak lensing data, like the ones we will get from Rubin or Euclid. We have created mock data for two benchmark points, an LCDM one and another based on an IDM-DR model. We found that these data sets will be able to distinguish between the two models. Noting that the IDM-DR model is proposed as a possibility for solving the $S_8$ tension. These data sets will be able to measure $\sigma_8$ (or $S_8) at a percent level, offering a promising avenue for providing an answer to this tension.