arXiv:0911.3396 [astro-ph.CO]AbstractReferencesReviewsResources
Universal properties of Dark Matter halos
Alexey Boyarsky, Andrey Neronov, Oleg Ruchayskiy, Igor Tkachev
Published 2009-11-18, updated 2010-05-17Version 2
We discuss the universal relation between density and size of observed Dark Matter halos that was recently shown to hold on a wide range of scales, from dwarf galaxies to galaxy clusters. Predictions of LambdaCDM N-body simulations are consistent with this relation. We demonstrate that this property of LambdaCDM can be understood analytically in the secondary infall model. Qualitative understanding given by this model provides a new way to predict which deviations from LambdaCDM or large-scale modifications of gravity can affect universal behavior and, therefore, to constrain them observationally.
Comments: 4 pages, 1 figure, revtex. Final version to appear in Phys. Rev. Lett
Journal: Phys.Rev.Lett.104:191301,2010
Keywords: dark matter halos, universal properties, affect universal behavior, lambdacdm n-body simulations, secondary infall model
Tags: journal article
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