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Article overview
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Understanding the Equilibrium Structure of CDM Halos | | Paul R. Shapiro
; Kyungjin Ahn
; Marcelo Alvarez
; Ilian T. Iliev
; Hugo Martel
; | | Date: |
5 Oct 2005 | | Subject: | astro-ph | | Affiliation: | University of Texas, CITA, Universite Laval | | Abstract: | N-body simulations find a universal structure for the halos which result from the nonlinear growth of Gaussian-random-noise density fluctuations in the CDM universe. This talk summarized our attempts to derive and explain this universal structure by analytical approximation and simplified models. As an example, we show here that a 1D spherical infall model involving a fluid approximation derived from the Boltzmann equation can explain not only the halo density profile but its phase-space density profile, as well. | | Source: | arXiv, astro-ph/0510146 | | Services: | Forum | Review | PDF | Favorites | |
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