Modulating binary dynamics via the termination of black hole superradiance

Understand

A superradiant cloud of ultralight bosons near a rotating black hole provides a smoking gun for particle physics in the infrared.

• However, tidal perturbations from a nearby binary companion can destabilise the boson cloud and even terminate superradiance.
• In this work, we consider the backreaction of superradiance termination to the dynamics of general binary orbits parametrised by their semi-latus rectum, eccentricity and inclination angle.
• Our analysis focuses on Extreme Mass Ratio Inspiral (EMRI) systems and employs the period-average approximation to derive evolution equations of these binary parameters in the Newtonian limit.