The large dark cores of common dwarf galaxies are unexplained by the standard heavy particle interpretation of dark matter because gravity is scale free (1-3), so the particle density should continuously rise towards the center of galaxies. This puzzle is exacerbated by the discovery of a very large but barely 1
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.