Dec 14 – 15, 2023
Centre for Particle Theory
Europe/London timezone

Adiabatic inspirals under electromagnetic radiation reaction on Kerr spacetime

Dec 14, 2023, 4:00 PM
Ph8 (Centre for Particle Theory)


Centre for Particle Theory

Long Talk (20 mins) Black Holes


Ethan James German (University of Sheffield)


Consider an electrically charged particle orbiting a spinning black hole, described by the Kerr spacetime. As the charged particle moves it undergoes a radiation-reaction process, driven by the electromagnetic force, causing it to lose energy and angular momentum, inspiraling towards the black hole until the final plunge. In this work we calculate how the orbital parameters for eccentric orbits change along the inspiral. We make comparisons to gravitationally driven inspirals and non-relativistic Keplerian approximations based on the Abraham-Lorentz force law. We find the electromagnetic inspirals circularize less efficiently than gravitational inspirals, and we quantify the effect of the black hole spin.

Are you happy for your talk to be recorded? Yes
Please select the most relevant category Black Holes
Other category: Gravitational Waves, EMRIs, Self-Force.
Would you be interested in receiving feedback on your presentation? Yes

Primary author

Ethan James German (University of Sheffield)

Presentation materials