Formation of Dark Compact Objects in an Early Matter Dominated Era

          @misc{ scivideos_PIRSA:24020059,
            doi = {10.48660/24020059},
            url = {https://pirsa.org/24020059},
            author = {Diamond, Melissa},
            keywords = {Cosmology},
            language = {en},
            title = {Formation of Dark Compact Objects in an Early Matter Dominated Era},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2024},
            month = {feb},
            note = {PIRSA:24020059 see, \url{https://scivideos.org/index.php/pirsa/24020059}}
          }
          

Abstract

Self interacting dark matter can form halos and compact objects in an early matter dominated era before Big Bang Nucleosynthesis. This talk explores how an asymmetric dark fermion which self interacts via a heavy vector can undergo halo formation in an early matter dominated era. These halos then cool via bremsstrahlung until they either collapse into black holes or fragment into compact pressure support objects. Radiation domination is restored via a phase transition. This provides a simple new mechanism to produce both primordial black holes and dark compact objects.