Strong Constraints on Cosmological Gravity from GW170817 and GRB 170817A.

@article{Baker2017StrongCO,
title={Strong Constraints on Cosmological Gravity from GW170817 and GRB 170817A.},
author={T. Baker and E. Bellini and P. Ferreira and M. Lagos and J. Noller and I. Sawicki},
journal={Physical review letters},
year={2017},
volume={119 25},
pages={
251301
}
}

The detection of an electromagnetic counterpart (GRB 170817A) to the gravitational-wave signal (GW170817) from the merger of two neutron stars opens a completely new arena for testing theories of gravity. We show that this measurement allows us to place stringent constraints on general scalar-tensor and vector-tensor theories, while allowing us to place an independent bound on the graviton mass in bimetric theories of gravity. These constraints severely reduce the viable range of cosmological… CONTINUE READING