Gravitational self-torque and spin precession in compact binaries
Gravitational self-torque and spin precession in compact binaries
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 ? per radian of orbital revolution for a particle carrying mass ? and spin s?(G/c)?2 in a circular orbit around a Schwarzschild black hole of mass M??. We compute ? through O(?/M) in perturbation theory, i.e, including the correction ?? (obtained numerically) due to the torque exerted by the conservative piece of the gravitational self-field. Comparison with a post-Newtonian (PN) expression for ??, 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 semianalytical models of the strong-field dynamics in astrophysical binaries, important for ongoing and future gravitational-wave searches
64011
Dolan, Sam R.
ee9c2137-170a-4942-9655-862a98f389c2
Warburton, Niels
88d3f12e-d930-438d-bb54-071292b0c1dc
Harte, Abraham I.
d249c126-7982-4150-8c7a-0f9bd6833ec0
Le Tiec, Alexandre
5d68182b-445c-454b-9c38-627c1788515a
Wardell, Barry
70b41899-32ac-4585-888b-aaf28fd70ad5
Barack, Leor
f08e66d4-c2f7-4f2f-91b8-f2c4230d0298
6 March 2014
Dolan, Sam R.
ee9c2137-170a-4942-9655-862a98f389c2
Warburton, Niels
88d3f12e-d930-438d-bb54-071292b0c1dc
Harte, Abraham I.
d249c126-7982-4150-8c7a-0f9bd6833ec0
Le Tiec, Alexandre
5d68182b-445c-454b-9c38-627c1788515a
Wardell, Barry
70b41899-32ac-4585-888b-aaf28fd70ad5
Barack, Leor
f08e66d4-c2f7-4f2f-91b8-f2c4230d0298
Dolan, Sam R., Warburton, Niels, Harte, Abraham I., Le Tiec, Alexandre, Wardell, Barry and Barack, Leor
(2014)
Gravitational self-torque and spin precession in compact binaries.
Physical Review D, 89 (6), .
(doi:10.1103/PhysRevD.89.064011).
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 ? per radian of orbital revolution for a particle carrying mass ? and spin s?(G/c)?2 in a circular orbit around a Schwarzschild black hole of mass M??. We compute ? through O(?/M) in perturbation theory, i.e, including the correction ?? (obtained numerically) due to the torque exerted by the conservative piece of the gravitational self-field. Comparison with a post-Newtonian (PN) expression for ??, 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 semianalytical models of the strong-field dynamics in astrophysical binaries, important for ongoing and future gravitational-wave searches
Other
PhysRevD.89.064011
- Version of Record
Available under License Other.
More information
Published date: 6 March 2014
Organisations:
Mathematical Sciences
Identifiers
Local EPrints ID: 369461
URI: http://eprints.soton.ac.uk/id/eprint/369461
ISSN: 1550-7998
PURE UUID: 912969bc-ade4-49bb-88fc-9e042380635e
Catalogue record
Date deposited: 26 Sep 2014 13:34
Last modified: 15 Mar 2024 03:21
Export record
Altmetrics
Contributors
Author:
Sam R. Dolan
Author:
Niels Warburton
Author:
Abraham I. Harte
Author:
Alexandre Le Tiec
Author:
Barry Wardell
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
