CLASH-VLT: Constraining deviation from GR with the mass profiles of nine massive galaxy clusters

L. Pizzuti, A. Biviano, K. Umetsu +5

We investigate the anisotropic stress parameter, $\eta =\Psi /\Phi$, defined as the ratio of the gravitational potentials in the linearly perturbed Friedmann-Lemaître Robertson-Walker metric,…