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Journal Article

Gravitational self-force on generic bound geodesics in Kerr spacetime


van de Meent ,  Maarten
AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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van de Meent, M. (2018). Gravitational self-force on generic bound geodesics in Kerr spacetime. Physical Review D, 97: 104033. doi:10.1103/PhysRevD.97.104033.

Cite as: http://hdl.handle.net/21.11116/0000-0001-693C-7
In this work we present the first calculation of the gravitational self-force on generic bound geodesics in Kerr spacetime to first order in the mass-ratio. That is, the local correction to equations of motion for a compact object orbiting a larger rotating black hole due to its own impact on the gravitational field. This includes both dissipative and conservative effects. Our method builds on and extends earlier methods for calculating the gravitational self-force on equatorial orbits. In particular we reconstruct the local metric perturbation in the outgoing radiation gauge from the Weyl scalar $\psi_4$, which in turn is obtained by solving the Teukolsky equation using semi-analytical frequency domain methods. The gravitational self-force is subsequently obtained using (spherical) $l$-mode regularization. We test our implementation by comparing the large $l$-behaviour against the analytically known regularization parameters. In addition we validate our results be comparing the long-term average changes to the energy, angular momentum, and Carter constant to changes to these constants of motion inferred from the gravitational wave flux to infinity and down the horizon.