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  Gravitational self-torque and spin precession in compact binaries

Dolan, S. R., Warburton, N., Harte, A. I., Tiec, A. L., Wardell, B., & Barack, L. (2014). Gravitational self-torque and spin precession in compact binaries. Physical Review D, 89: 064011. doi:10.1103/PhysRevD.89.064011.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-7069-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-706A-6
Genre: Journal Article

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 Creators:
Dolan, Sam R., Author
Warburton, Niels, Author
Harte, Abraham I.1, Author              
Tiec, Alexandre Le, Author
Wardell, Barry, Author
Barack, Leor, 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
 Abstract: We calculate the effect of self-interaction on the "geodetic" spin precession of a compact body in a strong-field orbit around a black hole. Specifically, we consider the spin precession angle $\psi$ per radian of orbital revolution for a particle carrying mass $\mu$ and spin $s \ll (G/c) \mu^2$ in a circular orbit around a Schwarzschild black hole of mass $M \gg \mu$. We compute $\psi$ through $O(\mu/M)$ in perturbation theory, i.e, including the correction $\delta\psi$ (obtained numerically) due to the torque exerted by the conservative piece of the gravitational self-field. Comparison with a post-Newtonian (PN) expression for $\delta\psi$, derived here through 3PN order, shows good agreement but also reveals strong-field features which are not captured by the latter approximation. Our results can inform semi-analytical models of the strong-field dynamics in astrophysical binaries, important for ongoing and future gravitational-wave searches.

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 Dates: 2013-12-032014-03-072014
 Publication Status: Published in print
 Pages: 5 pages, 1 table, 1 figure. Minor changes to match published version
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 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1312.0775
DOI: 10.1103/PhysRevD.89.064011
URI: http://arxiv.org/abs/1312.0775
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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: 89 Sequence Number: 064011 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: /journals/resource/111088197762258