Post-merger accretion of magnetized circumbinary disk onto a recoiled BBH merger remnant

Merging binary black holes embedded in a magnetized medium are promising sources of multi-messenger transients. Employing a numeric matter profile from a recent long-term simulation of a magnetized circumbinary disk around a binary black hole as a realistic initial condition, we present global GRMHD simulations tracking how the recoiled, spinning remnant black hole accretes from and disrupts the circumbinary disk. We find that the jet activity of the remnant black hole and the resulting post-merger electromagnetic signature can vary substantially depending on the recoil speed and angle, establishing a connection between the post-merger kinematics of the remnant and the timing properties of the observed EM counterpart.