In
cosmology
Cosmology () is a branch of physics and metaphysics dealing with the nature of the universe, the cosmos. The term ''cosmology'' was first used in English in 1656 in Thomas Blount's ''Glossographia'', with the meaning of "a speaking of the wo ...
, the halo mass function is a mass distribution of
dark matter halo
In modern models of physical cosmology, a dark matter halo is a basic unit of cosmological structure. It is a hypothetical region that has decoupled from cosmic expansion and contains gravitationally bound matter.
A single dark matter halo ma ...
s. Specifically, it gives the number density of
dark matter halo
In modern models of physical cosmology, a dark matter halo is a basic unit of cosmological structure. It is a hypothetical region that has decoupled from cosmic expansion and contains gravitationally bound matter.
A single dark matter halo ma ...
s per mass interval.
See also
*
Navarro–Frenk–White profile
*
Einasto profile
*
Press–Schechter formalism
*
Sheth–Tormen approximation
The Sheth–Tormen approximation is a halo mass function.
Background
The Sheth–Tormen approximation extends the Press–Schechter formalism by assuming that halos are not necessarily spherical, but merely elliptical. The distribution of th ...
References
External links
Halo Mass Functions on the NMSU website
Dark matter
{{physical-cosmology-stub