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Jul 26 – 30, 2021
Zoom
Europe/Berlin timezone

Gravitational-wave signatures of non-integrable extreme-mass-ratio inspirals

Jul 28, 2021, 11:10 AM
20m
Zoom

Zoom

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

Speaker

Kyriakos Destounis (University of Tuebingen)

Description

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
Email kyriakos.destounis@uni-tuebingen.de
Collaboration / Activity PostDoctoral Researcher

Primary author

Kyriakos Destounis (University of Tuebingen)

Co-authors

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

Presentation materials