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Advances in Astronomy
Volume 2010, Article ID 789293, 14 pages
http://dx.doi.org/10.1155/2010/789293
Review Article

The Core-Cusp Problem

Department of Astronomy, University of Cape Town, Rondebosch 7700, South Africa

Received 4 May 2009; Revised 18 August 2009; Accepted 12 October 2009

Academic Editor: Elias Brinks

Copyright © 2010 W. J. G. de Blok. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper gives an overview of the attempts to determine the distribution of dark matter in low surface brightness disk and gas-rich dwarf galaxies, both through observations and computer simulations. Observations seem to indicate an approximately constant dark matter density in the inner parts of galaxies, while cosmological computer simulations indicate a steep power-law-like behaviour. This difference has become known as the “core/cusp problem,” and it remains one of the unsolved problems in small-scale cosmology.