General Relativity


General Relativity has been subjected to numerous experimental tests, mostly in the weak gravitational fields found in our Solar System and has passed all of them with flying colors. In contrast, gravity in the strong-field regime and at cosmological settings has been largely unconstrained by experiments, with only limited studies around neutron stars in binaries and using cosmological structure formation. A large class of gravity theories can be constructed that obey the Einstein equivalence principle and cannot be rejected by solar system tests, but that diverge from general relativity in other regimes. Our aim is to explore how tests of General Relativity at different scales can be compared and contrasted, as well as to design new tests of the theory that span different scales.