Gravitationalwave glitches: Resonant islands and frequency jumps in nonintegrable extrememassratio inspirals
Abstract
The detection of gravitational waves from extrememassratio inspirals with upcoming spaceborne detectors will allow for unprecedented tests of general relativity in the strongfield regime. Aside from assessing whether black holes are unequivocally described by the Kerr metric, such detections may place constraints on the degree of spacetime symmetry. In particular, depending on exactly how a hypothetical departure from the Kerr metric manifests, the Carter symmetry, which implies the integrability of the geodesic equations, may be broken. Here, we examine the gravitational waveforms associated with nonintegrable extrememassratio inspirals involving a smallmass companion and a supermassive compact object of general relativity, namely the MankoNovikov spacetime. We show that the waveforms display sudden frequency jumps when the companion transverses resonant islands. These findings demonstrate that such abrupt manifestations in the gravitationalwave frequencies are generic, have a genuine astrophysical origin, and function as a distinctive signature of chaotic phenomena in extrememassratio binaries.
 Publication:

Physical Review D
 Pub Date:
 September 2021
 DOI:
 10.1103/PhysRevD.104.064023
 arXiv:
 arXiv:2108.02782
 Bibcode:
 2021PhRvD.104f4023D
 Keywords:

 General Relativity and Quantum Cosmology;
 Astrophysics  High Energy Astrophysical Phenomena;
 Nonlinear Sciences  Chaotic Dynamics
 EPrint:
 13 pages, 4 figures, accepted for publication in Phys. Rev. D