Actions and frequencies for spinning bodies orbiting Kerr black holes

ORAL

Abstract

We compute actions and frequencies for small test bodies with small spins orbiting Kerr black holes. We compute these in closed form in terms of elliptic integrals, using the perturbative integrability of particle motion in the Kerr spacetime. We re-expand our results in the post-Newtonian limit to compare against the integrable 1.5PN system with two spinning bodies.

*This work was supported by NSF CAREER Award PHY-2047382, a Sloan Foundation Research Fellowship, a PSL postdoctoral fellowship, the Charles University Primus programme, and the project "Grant schemes at CU" (reg.no. CZ.02.2.69/0.0/0.0/19 073/0016935).

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Presenters

  • Leo C Stein

    • University of Mississippi

Authors

  • Leo C Stein

    • University of Mississippi

  • Vojtech Witzany

    • Charles University

  • Sashwat Tanay

    • LUTH, Observatoire de Paris

  • Viktor Skoupy

    • Charles University