The mass distribution in the outskirts of clusters of galaxies as a probe of the theory of gravity

M. Pizzardo, A. Diaferio, K. Rines

Submitted on 11 July 2022


We show how ς, the radial location of the minimum of the differential radial mass profile M(r) of a galaxy cluster, can probe the theory of gravity. We derive M(r) of the dark matter halos of galaxy clusters from N-body cosmological simulations that implement two different theories of gravity: standard gravity in the ΛCDM model and f(R). We extract 49169 dark matter halos in 11 redshift bins in the range 0z1 and in three different mass bins in the range $0.9


Comment: 23 pages, 12 figures, 10 tables

Subject: Astrophysics - Cosmology and Nongalactic Astrophysics