Neutrinos as Hot or Warm Dark Matter (Active + Sterile)
Neutrinos as Hot or Warm Dark Matter (Active + Sterile)
Neutrinos as Hot or Warm Dark Matter (Active + Sterile)
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keV sterile <strong>Dark</strong> <strong>Matter</strong>Production: via active-sterile oscillations in the early Universe, etc;Salient feature: warm DM in the f<strong>or</strong>m of keV sterile ’s can suppressthe f<strong>or</strong>mation of dwarf galaxies and other small-scale structures.Bounds on 2-flav<strong>or</strong> parameters:(Abazajian, Koushiapp<strong>as</strong>, 2006)F<strong>or</strong> simplicity, we <strong>as</strong>sume only onetype of keV sterile neutrinos:Standard parameterization of V:6 mixing angles & 3 (Dirac) <strong>or</strong> 6(Maj<strong>or</strong>ana) CP-violating ph<strong>as</strong>es.
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