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Halo occupation distribution

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Parameter of the halo model of galaxy clustering

The halo occupation distribution (HOD) is a parameter of the halo model of galaxy clustering. 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. The HOD is used to describe three related properties of the halo model: the probability distribution relating the mass of a dark matter halo to 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.

See also

References

  1. Martinez, Vicent J.; Saar, Enn (2002) . "Chapter 7: Random Fields in Cosmology". Statistics of the Galaxy Distribution. CRC Press. pp. 232–237. ISBN 978-1-58488-084-4. 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; et al. (2005). "Theoretical Models of the Halo Occupation Distribution: Separating Central and Satellite Galaxies". The Astrophysical Journal. 633 (2): 791–809. arXiv:astro-ph/0408564. Bibcode:2005ApJ...633..791Z. doi:10.1086/466510. S2CID 2286180.
  3. Berlind, Andreas A.; David H. Weinberg (2002). "The Halo Occupation Distribution: Toward an Empirical Determination of the Relation between Galaxies and Mass". Astrophysical Journal. 575 (2): 587–616. arXiv:astro-ph/0109001. Bibcode:2002ApJ...575..587B. doi:10.1086/341469. S2CID 16067136.
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