A Model for the Density Distribution of Virialized CDM Halos

Abstract

An analytic collapse model for the formation and density distribution of virialized cold dark matter halos is proposed. Hierarchical structure formation is taken into account explicitly. Monte Carlo methods are used to generate samples of mass histories of virialized halos. The mean density distribution found from the collapse model is in good agreement with numerical results in the mass range from $10^{11}{M}_{\odot }$ to $10^{15}{M}_{\odot }$ and in the radial range form $0.05r_{200}$ to $r_{200}$.

8 pages, 3 figures. Accepted for publication in ApJ Letters

References in corpus (4)

• Resolving the Structure of Cold Dark Matter Halos
• On Formation and Evolution of Disk Galaxies: Cosmological Initial Conditions and the Gravitational Collapse
• Merger vs. Accretion and the Structure of Dark Matter Halos
• Scaling Evolution of Universal Dark-Matter Halo Density Profiles

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• Disc galaxy evolution models in a hierarchical formation scenario: structure and dynamics
• The Rotation Velocity Attributable to Dark Matter at Intermediate Radii in Disk Galaxies
• Formation and Evolution of the Self-Interacting Dark Matter Halos
• Density profiles of dark matter haloes: diversity and dependence on environment
• A Limit on the Cosmological Mass Density and Power Spectrum from the Rotation Curves of Low Surface Brightness Galaxies
• On the Origin of the Inner Structure of Halos
• The nature of dark matter and the density profile and central behavior of relaxed halos
• Extended Press-Schechter theory and the density profiles of dark matter haloes