 NSFPAR ID:
 10320848
 Date Published:
 Journal Name:
 Classical and Quantum Gravity
 Volume:
 39
 Issue:
 3
 ISSN:
 02649381
 Format(s):
 Medium: X
 Sponsoring Org:
 National Science Foundation
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Amplitude and phase of the gravitational waveform from compact binary systems can be decomposed in terms of their mass and currenttype multipole moments. In a modified theory of gravity, one or more of these multipole moments could deviate from general theory of relativity. In this work, we show that a waveform model that parametrizes the amplitude and phase in terms of the multipole moments of the binary can facilitate a novel multiparameter test of general relativity with exquisite precision. Using a network of nextgeneration gravitationalwave observatories, simultaneous deviation in the leading seven multipoles of a GW190814like binary can be bounded to within 6%–40% depending on the multipole order, while supermassive black hole mergers observed by the Laser Interferometer Space Antenna achieve a bound of 0.3%–2%. We further argue that bounds from multipoles can be uniquely mapped onto other parametrized tests of general relativity and have the potential to become a downstream analysis from which bounds of other parametric tests of general relativity can be derived. The set of multipole parameters, therefore, provides an excellent basis to carry out precision tests of general relativity.more » « less

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