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Bounding the speed of gravity with gravitational wave observations

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arxiv 1707.06101 v2 pith:J6D5IGGX submitted 2017-07-19 gr-qc hep-phhep-th

Neil Cornish , Diego Blas , Germano Nardini This is my paper · ORCID
classification gr-qchep-phhep-th
keywords speedgravitationaldetectionswaveconstraindetectorsgravitylight
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The time delay between gravitational wave signals arriving at widely separated detectors can be used to place upper and lower bounds on the speed of gravitational wave propagation. Using a Bayesian approach that combines the first three gravitational wave detections reported by the LIGO collaboration we constrain the gravitational waves propagation speed c_gw to the 90% credible interval 0.55 c < c_gw < 1.42 c, where c is the speed of light in vacuum. These bounds will improve as more detections are made and as more detectors join the worldwide network. Of order twenty detections by the two LIGO detectors will constrain the speed of gravity to within 20% of the speed of light, while just five detections by the LIGO-Virgo-Kagra network will constrain the speed of gravity to within 1% of the speed of light.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Better early than never: A new test for superluminal gravitational wave polarizations

    gr-qc 2025-01 conditional novelty 6.0 of 10

    A backward search in time from known gravitational wave detections could detect or constrain superluminal non-tensor polarizations, and the authors argue this is feasible with current detectors.

  2. Greybody Factor for massive scalar field in charged black hole

    gr-qc 2025-01 unverdicted novelty 3.0 of 10

    For a massive scalar field around a charged black hole, the greybody factor falls as the field mass rises, consistent between WKB and rigorous bound methods.

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