Tests of general relativity with the binary black hole signals from the LIGOVirgo catalog GWTC1
Abstract
The detection of gravitational waves by Advanced LIGO and Advanced Virgo provides an opportunity to test general relativity in a regime that is inaccessible to traditional astronomical observations and laboratory tests. We present four tests of the consistency of the data with binary black hole gravitational waveforms predicted by general relativity. One test subtracts the bestfit waveform from the data and checks the consistency of the residual with detector noise. The second test checks the consistency of the low and highfrequency parts of the observed signals. The third test checks that phenomenological deviations introduced in the waveform model (including in the postNewtonian coefficients) are consistent with 0. The fourth test constrains modifications to the propagation of gravitational waves due to a modified dispersion relation, including that from a massive graviton. We present results both for individual events and also results obtained by combining together particularly strong events from the first and second observing runs of Advanced LIGO and Advanced Virgo, as collected in the catalog GWTC1. We do not find any inconsistency of the data with the predictions of general relativity and improve our previously presented combined constraints by factors of 1.1 to 2.5. In particular, we bound the mass of the graviton to be m_{g}≤4.7 ×10^{23} eV /c^{2} (90% credible level), an improvement of a factor of 1.6 over our previously presented results. Additionally, we check that the four gravitationalwave events published for the first time in GWTC1 do not lead to stronger constraints on alternative polarizations than those published previously.
 Publication:

Physical Review D
 Pub Date:
 November 2019
 DOI:
 10.1103/PhysRevD.100.104036
 Bibcode:
 2019PhRvD.100j4036A