• General bulk-viscous solutions and estimates of bulk viscosity in the cosmic fluid 

      Normann, Ben David; Brevik, Iver Håkon (Journal article; Peer reviewed, 2016)
      We derive a general formalism for bulk viscous solutions of the energy-conservation equation for ρ(a,ζ) ρ(a,ζ) , both for a single-component and a multicomponent fluid in the Friedmann universe. For our purposes, these ...
    • Viscous cosmology - Bulk viscosity in the cosmological context 

      Normann, Ben David (Master thesis, 2015)
      The main objective of this thesis has been to estimate the present value of the bulk viscosity of the cosmic fluid. The following list contains a summary of the main results found in the present work: -The bulk viscosity ...