WIDG Seminar: Luna Zagorac, Yale, "Linear Approximations to UltraLight Dark Matter Stationary States"
UltraLight Dark Matter (ULDM) is an axion-like dark matter candidate with an extremely small particle mass. The dynamics of ULDM are governed by the Schrodinger-Poisson system of coupled differential equations for which the ground state solution is a spherically symmetric soliton. While a purely solitonic profile is incompatible with observational constraints on dark matter halos, mergers of ULDM solitons create halos with solitonic central cores, but with NFW-like behaviour at large radii.