Viewpoint: Spinning black holes may grow hair (for Physical Review Letters, July 2017).
Superradiance and the Aharonov-Bohm effect (PDF, 8.3MB) (Nottingham, April 2017).
Fractals and black hole shadows (CQG+ Insight article, August 2016).
Binary black hole shadows, the Cantor set and the Lakes of Wada (3.4MB) (Albert Einstein Institute, Potsdam, April 2016).
Orbital dynamics in the tidally-perturbed Kepler and Schwarzschild systems (PDF, 4.8MB) (Nottingham, August 2015).
Self-force calculations: Synergies and invariants (PDF, 2MB) (Fields Institute, Toronto, May 2015)