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Tests of General Relativity with GW170817

Research output: Contribution to journalLetter

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  • LIGO Scientific Collaboration and Virgo Collaboration
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<mark>Journal publication date</mark>3/07/2019
<mark>Journal</mark>Physical review letters
Issue number1
Volume123
Number of pages15
Pages (from-to)011102
Publication statusPublished
Early online date1/07/19
Original languageEnglish

Abstract

The recent discovery by Advanced LIGO and Advanced Virgo of a gravitational wave signal from a binary neutron star inspiral has enabled tests of general relativity (GR) with this new type of source. This source, for the first time, permits tests of strong-field dynamics of compact binaries in the presence of matter. In this Letter, we place constraints on the dipole radiation and possible deviations from GR in the post-Newtonian coefficients that govern the inspiral regime. Bounds on modified dispersion of gravitational waves are obtained; in combination with information from the observed electromagnetic counterpart we can also constrain effects due to large extra dimensions. Finally, the polarization content of the gravitational wave signal is studied. The results of all tests performed here show good agreement with GR.

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© 2019 American Physical Society