Exotic Compact Objects with Two Dark Matter Fluids

Abstract The generic properties of compact objects made two different fluids dark matter are studied in a scale-invariant approach. We investigate with core–shell structure, where the separated, and mixed components, both immersed within each other. constellations considered combinations incompressible fluids, free interacting Fermi gases, equations state vacuum term, i.e., self-bound matter. find novel features mass–radius relations for combined objects, which distinguishes them from single fluid stars ordinary baryonic matter, such as white dwarfs, neutron stars, quark stars. maximum compactness certain can reach values up to causality limit but not beyond that if is ensured.