Halo Occupation Distribution

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The Halo Occupation Distribution (HOD) is a parameter of the halo model of galaxy clustering.[1] The halo model provides one view of the large scale structure of the universe as clumps of dark matter, while the HOD provides a view of how galactic matter is distributed within each of the dark matter clumps.[2] The HOD is used to describe three related properties of the halo model: the probability distribution relating the mass of a dark matter halo the the number of galaxies that form within that halo; the distribution in space of galactic matter within a dark matter halo; the distribution of velocities of galactic matter relative to dark matter within a dark matter halo.[3]

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  1. ^ Martinez, Vincent J.; Enn Saar [2002]. "Chapter 7: Random Fields in Cosmology", Statistics of the Galaxy Distribution (PDF), CRC Press, 232–237. ISBN 1584880848. Retrieved on 2007-12-15.  Note: See section 7.8: Halo Model of Galaxy Clustering
  2. ^ Zheng, Zheng; A.A. Berlind, D.H. Weinberg, A.J. Benson, C.M. Baugh, S. Cole, R. Davé, C.S. Frenk, N. Katz, and C.G. Lacey (2005-11-10). "Theoretical Models of the Halo Occupation Distribution: Separating Central and Satellite Galaxies". Astrophysical Journal 633: 791–809. University of Chicago Press. doi:10.1086/466510. 
  3. ^ Berlind, Andreas A.; David H. Weinberg (2002-08-20). "The Halo Occupation Distribution: Toward an Empirical Determination of the Relation between Galaxies and Mass". Astrophysical Journal 575: 587–616. University of Chicago Press. doi:10.1086/341469.