Explores dispersion relations, system responses to perturbations, and the stability of rotating systems, focusing on the origin of spiral structures in galaxies.
Explores the 3D distribution of galaxies, galaxy clustering, and the cosmic microwave background, shedding light on the observable universe's contents and properties.
Explores the classification and statistics of AGN, black holes, unified AGN model, variability, megamasers, orbital motion measurement, and time-delay cosmography.
