PIRSA:06110005

Dark matter: from the early Universe to the Milky Way

Bedding, T. (2006). Dark matter: from the early Universe to the Milky Way . Perimeter Institute. https://pirsa.org/06110005

Bedding, Tim. Dark matter: from the early Universe to the Milky Way . Perimeter Institute, Nov. 07, 2006, https://pirsa.org/06110005 

          @misc{ pirsa_PIRSA:06110005,
            doi = {10.48660/06110005},
            url = {https://pirsa.org/06110005},
            author = {Bedding, Tim},
            keywords = {Cosmology},
            language = {en},
            title = {Dark matter: from the early Universe to the Milky Way },
            publisher = {Perimeter Institute},
            year = {2006},
            month = {nov},
            note = {PIRSA:06110005 see, \url{https://pirsa.org}}
          }

Tim Bedding University of Sydney

DOI 10.48660/06110005
Collection
Talk Type Scientific Series
Subject

Abstract

The initial conditions for structure formation, and hence the dark matter distribution on sub-galactic scales, depend on the microphysics of the dark matter in the early Universe. I will focus on WIMPs and explain how collisional damping and free-streaming erase perturbations on comoving scales k> ~1/pc. Consequently the first structures to form in the Universe are mini-halos with mass of order the Earth. I will then describe the status of calculations of the subsequent dynamical evolution of these mini-halos. Finally, if time permits, I'll briefly overview the microphysics of axions.