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arxiv: gr-qc/0509024 · v1 · submitted 2005-09-07 · 🌀 gr-qc · astro-ph

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Extreme Mass Ratio Inspirals: LISA's unique probe of black hole gravity

Kostas Glampedakis
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classification 🌀 gr-qc astro-ph
keywords gravitationalblackholearticlebodyextremekerrlisa
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In this review article I attempt to summarise past and present-ongoing-work on the problem of the inspiral of a small body in the gravitational field of a much more massive Kerr black hole. Such extreme mass ratio systems, expected to occur in galactic nuclei, will constitute prime sources of gravitational radiation for the future LISA gravitational radiation detector. The article's main goal is to provide a survey of basic celestial mechanics in Kerr spacetime and calculations of gravitational waveforms and backreaction on the small body's orbital motion, based on the traditional `flux-balance' method and the Teukolsky black hole perturbation formalism.

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  1. Gravitational waves of extreme-mass-ratio inspirals in a rotating black hole with Dehnen dark matter halo

    gr-qc 2026-04 unverdicted novelty 4.0

    EMRI waveforms in a rotating black hole with Dehnen DM halo show amplitude and phase shifts from Kerr, with mismatch rising as DM mass parameter and black hole spin increase.