Bounding the Speed of Gravity with Gravitational Wave Observations

Neil Cornish; Diego Blas; Germano Nardini

doi:10.1103/PhysRevLett.119.161102

Bounding the Speed of Gravity with Gravitational Wave Observations

Neil Cornish, Diego Blas, Germano Nardini

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Abstract

The time delay between gravitational wave signals arriving at widely separated detectors can be used toplace upper and lower bounds on the speed of gravitational wave propagation. Using a Bayesian approach thatcombines the first three gravitational wave detections reported by the LIGO Scientific and VirgoCollaborations we constrain the gravitational waves propagation speed cgw to the 90% credible interval0.55care made and as more detectors join the worldwide network. Of order 20 detections by the two LIGO detectorswill constrain the speed of gravity to within 20% of the speed of light, while just five detections by the LIGOVirgo-Kagra network will constrain the speed of gravity to within 1% of the speed of light.

Original language	English
Pages (from-to)	161102
Number of pages	1
Journal	Physical Review Letters
Volume	119
Early online date	18 Oct 2017
DOIs	https://doi.org/10.1103/PhysRevLett.119.161102
Publication status	Published - 20 Oct 2017

Keywords

General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology, High Energy Physics - Theory

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Bounding the Speed of_CORNISH_Epub18Oct2017_GOLD VoR(CC BY)Final published version, 422 KBLicence: CC BY

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Bounding the Speed of Gravity with Gravitational Wave Observations

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