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Abstract

The recent discovery by Advanced LIGOand AdvancedVirgo 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.

Item Type:	Article
Authors/Creators:	Abbott, BP and Abbott, R and Siellez, K and Zweizig, J
Keywords:	Alternative gravity theories, Experimental studies of gravity, Gamma ray bursts, General relativity, Gravitation, Gravitational waves, Gravity in dimensions other than four
Journal or Publication Title:	Physical Review Letters
Publisher:	American Physical Soc
ISSN:	0031-9007
DOI / ID Number:	https://doi.org/10.1103/PhysRevLett.123.011102
Copyright Information:	© 2019 American Physical Society. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) License (https://creativecommons.org/licenses/by/4.0/). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. Must link to published article.
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