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 in a circular orbit around a Schwarzschild black hole of mass . We compute through 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.
- Received 2 December 2013
DOI:https://doi.org/10.1103/PhysRevD.89.064011
© 2014 American Physical Society