Exploring Solutions to the Galaxy Diversity Problem

Join a physics seminar exploring potential solutions to the galaxy diversity problem through the lens of cold dark matter (CDM) and alternative theories. Delve into the discrepancy between numerical CDM-only simulations, which predict uniform rotation curves for fixed dark matter halo mass, and the observed diverse rotation patterns in dwarf galaxies. Examine two competing explanations: the impact of galaxy formation physics where star formation and feedback modify central dark matter densities, and the alternative theory of dark matter self-interactions causing particle thermalization. Learn about findings from high-resolution zoom-in simulations that investigate dwarf galaxy diversity across multiple models, including CDM with baryons and various self-interacting dark matter scenarios with and without baryonic matter.