Speaker
Jessica Lopez-Sanchez
(CEICO Prague)
Description
The observed diversity of small-scale structures suggests that dark matter may be multi-component. Ultra-faint dwarf spheroidal galaxies exhibit both cored and cuspy density profiles, which are difficult to reconcile if all dark matter components share purely adiabatic initial conditions. In this work, we investigate a scenario in which a subdominant dark matter component carries isocurvature perturbations. Using N-body simulations, we explore whether such perturbations can influence the formation of satellite galaxies and contribute to diversity in halo properties at small scales. This framework provides a potential connection between early-universe physics and the structure of dwarf galaxies.