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arXiv · 2510.16102

Evolving extreme mass-ratio inspirals in a perturbed Schwarzschild spacetime

Michael LaHaye·Colin Weller·Dongjun Li·Patrick Bourg·Yanbei Chen·Huan Yang
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Abstract

In this work, we develop the modified Teukolsky formalism that describes the GW radiation from a point mass orbiting around a perturbed Schwarzschild BH. This perturbation of the background spacetime induces a secular change in the orbital phase of the point mass. In turn, this causes a modification in the GW flux, which can be used to probe the background spacetime. We explicitly apply this formalism to a bumpy Schwarzschild spacetime as a proof of principle. The results pave the way for the description of EMRIs in generic perturbed Kerr spacetime in future developments.

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Michael LaHaye, Colin Weller, Dongjun Li, Patrick Bourg, Yanbei Chen, Huan Yang. 2025-10-17. Evolving extreme mass-ratio inspirals in a perturbed Schwarzschild spacetime. https://arxiv.org/abs/2510.16102

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