Constraints on higher curvature gravity from time delay between GW170817 and GRB 170817A

General relativity may be an effective theory with higher curvature correction terms in the action. Inclusion of these terms leads to exciting new possibilities, e.g., gravitational and electromagnetic perturbations following different geodesics, leading to a time delay. Such a time delay was observed between the gravitational wave event GW170817 and its electromagnetic counterpart GRB 170817A. We describe how this effect can be used to constrain the coupling of the higher curvature term. Our method is sufficiently general and applicable to any higher curvature theory.

Note:

5 pages, no figures, typos corrected, references added, matches published version

General relativity, alternative theories of gravity
curvature: high
gamma ray: burst
curvature: correction
perturbation: electromagnetic
time delay
gravitation
gravitational radiation: emission
gravitational radiation: direct detection
gravitational radiation: propagation

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