Astrophysics (Index)About

halo abundance matching

(method of comparing observed galaxies with cosmology models)

Halo abundance matching (HAM) is a method of comparing observation and theory regarding galaxies and their dark matter halos. Cosmological models and simulations yield a certain mass distribution of halos and galaxy surveys yield a luminosity distribution of galaxies. The distributions may show a correspondence suggesting a relation between halo mass and its galaxy's luminosity, or alternately, correspondence can be taken as a test of the accuracy of the dark matter theory or the galaxy observations.

(astrophysics,galaxies,gravity,dark matter)
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