Perturbative effects of spinning black holes with applications to recoil velocities

Understand

Recently, we proposed an enhancement of the Regge-Wheeler-Zerilli formalism for first-order perturbations about a Schwarzschild background that includes first-order corrections due to the background black-hole spin.

• Using this formalism, we investigate gravitational wave recoil effects from a spinning black-hole binary system analytically.
• This allows us to better understand the origin of the large recoils observed in full numerical simulation of spinning black hole binaries.