Strong Constraints on Cosmological Gravity from GW170817 and GRB 170817A

Strong Constraints on Cosmological Gravity from GW170817 and GRB 170817A

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...

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Veröffentlicht in:Physical review letters 2017-12, Vol.119 (25), p.251301-251301, Article 251301
Hauptverfasser: Baker, T, Bellini, E, Ferreira, P G, Lagos, M, Noller, J, Sawicki, I
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container_end_page 251301
container_issue 25
container_start_page 251301
container_title Physical review letters
container_volume 119
creator Baker, T
Bellini, E
Ferreira, P G
Lagos, M
Noller, J
Sawicki, I
description 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 models that have been proposed as alternatives to general relativistic cosmology.
doi_str_mv 10.1103/PhysRevLett.119.251301
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title Strong Constraints on Cosmological Gravity from GW170817 and GRB 170817A
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