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Jul 26 – 30, 2021
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Gravitational-wave signatures of non-integrable extreme-mass-ratio inspirals

Jul 28, 2021, 11:10 AM


Parallel session talk Astroparticle and Gravitational Waves T01: Astroparticle and Gravitational Waves


Kyriakos Destounis (University of Tuebingen)


The detection of gravitational waves from extreme-mass-ratio inspirals (EMRIs) with upcoming space-borne detectors will allow for unprecedented tests of general relativity in the strong-field regime. Aside from assessing whether black holes are unequivocally described by the Kerr metric, they may place constraints on the degree of spacetime symmetry. 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.

In this talk, I will discuss the impact of non-integrability in EMRIs which involve a supermassive compact object with anomalous multipolar structure. After reviewing the particulars of chaotic phenomena in bumpy EMRIs, I will argue that non-integrability is precisely imprinted in the gravitational waveform. Explicit examples of non-integrable EMRIs will be discussed, as well as their role in LISA data analysis.

First author Kyriakos Destounis
Collaboration / Activity PostDoctoral Researcher

Primary author

Kyriakos Destounis (University of Tuebingen)


Dr Arthur Suvorov Prof. Kostas Kokkotas (University of Tuebingen)

Presentation materials