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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)