Speaker: Lucas Lombriser
Location: Ringberg castle, Germany
”Abstract:”
Dark matter halo profiles measured through cluster-galaxy lensing of SDSS maxBCG clusters provide a new test of the gravitational interactions at scales of r~(0.2-20)Mpc. Comparison to predictions from f(R) gravity simulations places an upper bound on the background scalar field amplitude of |f_R0|<3.5x10^-3 (95% CL).