Speaker : T. Osburn

Title : Highly eccentric EMRIs with self-force and spin-force

Abstract : Eccentric-orbit inspirals into a massive black hole are calculated using the gravitational self-force and the Mathisson-Papapetrou spin-force. Both extreme-mass-ratio inspirals (EMRIs) and intermediate-mass-ratio inspirals (IMRIs) are modeled. These calculations include all dissipative and conservative first-order-in-the-mass-ratio effects for inspirals into a Schwarzschild black hole. We compute systems with initial eccentricities as high as e = 0.8, initial separations as large as 50 M, and arbitrary spin orientations. Inclusion of the spin-force causes the orbital plane to precess. Inspirals are computed using an osculating-orbits scheme that is driven by self-force data from a hybridized self-force code and time-domain spin-force calculations. The hybrid self-force is generated with a Lorenz gauge self-force code combined with highly accurate flux data from a Regge-Wheeler-Zerilli code, allowing the hybrid model to track orbital phase in the inspirals to within 0.1 radians or better.