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  Transition from Inspiral to Plunge: A Complete Near-Extremal Waveform

Burke, O., Gair, J., & Simón, J. (2020). Transition from Inspiral to Plunge: A Complete Near-Extremal Waveform. Physical Review D, 101: 064026. doi:10.1103/PhysRevD.101.064026.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-D1DB-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-0B67-B
Genre: Journal Article

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 Creators:
Burke, Ollie, Author
Gair, Jonathan1, Author              
Simón, Joan, Author
Affiliations:
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,High Energy Physics - Theory, hep-th
 Abstract: We extend the Ori and Thorne (OT) procedure to compute the transition from an adiabatic inspiral into a geodesic plunge for any spin. Our analysis revisits the validity of the approximations made in OT. In particular, we discuss possible effects coming from eccentricity and non-geodesic past-history of the orbital evolution. We find three different scaling regimes according to whether the mass ratio is much smaller, of the same order or much larger than the near extremal parameter describing how fast the primary black hole rotates. Eccentricity and non-geodesic past-history corrections are always sub-leading, indicating that the quasi-circular approximation applies throughout the transition regime. However, we show that the OT assumption that the energy and angular momentum evolve linearly with proper time must be modified in the near-extremal regime. Using our transition equations, we describe an algorithm to compute the full worldline in proper time for an extreme mass ratio inspiral (EMRI) and the full gravitational waveform in the high spin limit.

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 Dates: 2019-09-272020
 Publication Status: Published in print
 Pages: 25 pages, 7 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1909.12846
URI: http://arxiv.org/abs/1909.12846
DOI: 10.1103/PhysRevD.101.064026
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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 101 Sequence Number: 064026 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: https://pure.mpg.de/cone/journals/resource/111088197762258