Explores gauge symmetry, amplitudes, black holes, and fluids, highlighting the interplay between redundancy, diffeomorphisms, and the double copy phenomenon.
Explores the stability of hairy black holes and the formation of solutions with electric hair, emphasizing the importance of large-scale black holes in physical theories.
Explores the classification and statistics of AGN, black holes, unified AGN model, variability, megamasers, orbital motion measurement, and time-delay cosmography.
