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  Dissipation in extreme-mass ratio binaries with a spinning secondary

Akcay, S., Dolan, S. R., Kavanagh, C., Moxon, J., Warburton, N., & Wardell, B. (2020). Dissipation in extreme-mass ratio binaries with a spinning secondary. Physical Review D, 102(6): 064013. doi:10.1103/PhysRevD.102.064013.

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1912.09461.pdf (Preprint), 1010KB
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 Creators:
Akcay, Sarp, Author
Dolan, Sam R., Author
Kavanagh, Chris1, Author              
Moxon, Jordan, Author
Warburton, Niels, Author
Wardell, Barry, Author
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1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
 Abstract: We present the gravitational-wave flux balance law in an extreme mass-ratio binary with a spinning secondary. This law relates the flux of energy (angular momentum) radiated to null infinity and through the event horizon to the local change in the secondary's orbital energy (angular momentum) for generic (non-resonant) bound orbits in Kerr spacetime. As an explicit example we compute these quantities for a spin-aligned body moving on a circular orbit around a Schwarzschild black hole. We perform this calculation both analytically, via a high-order post-Newtonian expansion, and numerically in two different gauges. Using these results we demonstrate explicitly that our new balance law holds.

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 Dates: 2019-12-192020
 Publication Status: Published in print
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 102 (6) Sequence Number: 064013 Start / End Page: - Identifier: -