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SUMMARY:Testing general relativity with the binary black hole signals from
  the LIGO-Virgo catalogue GWTC-1 - Nathan Johnson-McDaniel (University of 
 Cambridge)
DTSTART:20190503T120000Z
DTEND:20190503T130000Z
UID:TALK124108@talks.cam.ac.uk
CONTACT:20674
DESCRIPTION:The gravitational wave signals from compact binaries detected 
 by LIGO and Virgo provide the only way we currently have of testing the pr
 edictions of general relativity in the strong field\, highly dynamical reg
 ime. Binary black holes are particularly well-suited to such tests\, since
  they are very clean laboratories and often have large enough masses that 
 the coalescence occurs in the detectors' most sensitive band. I will descr
 ibe the four tests performed on all the significant binary black hole dete
 ctions from the first LIGO & Virgo catalogue. Two of these tests check the
  consistency of the residuals with noise and the consistency of the low- a
 nd high-frequency parts of the signal. The other two tests check that para
 meterized deviations in the waveform model--including in the post-Newtonia
 n coefficients--are consistent with zero and that the propagation of the w
 aves is nondispersive. These tests reveal no evidence for deviations from 
 general relativity\, and the combined constraints improve previous constra
 ints by factors of up to 2.4.
LOCATION:Pavilion B Potter Room (B1.19)
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