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Navarro-Frenk-White profile

(NFW profile)
(a dark matter spatial mass distribution function)

The Navarro-Frenk-White profile (NFW profile) is a spatial mass distribution function (not "mass function" in the sense of a PMF) for the internals of dark matter halos, developed from cosmological N-body simulations run by Navarro, Frenk, and White. The distribution has been adopted for use within other models.

ρ(r) = ———————————————

The latter two (parameters) must be chosen to fit the halo. Generalized NFW profiles (GNFW profiles) generalize this model: example using a form attributed to Zhao (Zhao profile):

ρ(r) = ——————————————————

(model,dark matter,function)
Further reading: