Bounding the Speed of Gravity with Gravitational Wave Observations

Cornish, Neil; Blas, Diego; Nardini, Germano (2017). Bounding the Speed of Gravity with Gravitational Wave Observations. Physical review letters, 119(16), p. 161102. American Physical Society 10.1103/PhysRevLett.119.161102

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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 Scientific and Virgo Collaborations we constrain the gravitational waves propagation speed cgw to the 90% credible interval 0.55c<cgw <1.42c, 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 20 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.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Nardini, Germano

Subjects:

500 Science > 530 Physics

ISSN:

0031-9007

Publisher:

American Physical Society

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

13 Dec 2017 14:00

Last Modified:

22 Oct 2019 20:07

Publisher DOI:

10.1103/PhysRevLett.119.161102

ArXiv ID:

1707.06101

BORIS DOI:

10.7892/boris.107224

URI:

https://boris.unibe.ch/id/eprint/107224

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