9 papers · 1 filter
Evolution of Mass Distribution in CDM Halos
Joel R. Primack
On the basis of a new convergence study of high-resolution N-body simulations, my colleagues and I now agree that the Navarro, Frenk, & White (1996) density profile $ρ_{NFW}(r) \pr…
Origin and Destiny of Dark Matter Halos: Cosmological Matter Exchange and Metal Enrichment
Tsafrir S. Kolatt, James S. Bullock, Avishai Dekel +4
[Abridged] We analyze the exchange of dark matter between halos, subhalos, and their environments in a high-resolution cosmological N-body simulation of a Lambda CDM cosmology. At…
Interaction rates of dark-matter halos and subhalos
Tsafrir S. Kolatt, James S. Bullock, Yair Sigad +4
[Abridged] The interaction rates of dark-matter halos and subhalos, are computed using high-resolution cosmological N-body simulations of the Lambda-CDM model. Although the number…
Hot Dark Matter in Cosmology
Joel R. Primack, Michael A. K. Gross
Cosmological dark matter in the form of neutrinos with masses of up to a few electron volts is known as hot dark matter. After an historical review of the subject, this article con…
The Nature of High-Redshift Galaxies
R. S. Somerville, J. R. Primack, S. M. Faber
Using semi-analytic models of galaxy formation set within the Cold Dark Matter (CDM) merging hierarchy, we investigate several scenarios for the nature of the high-redshift ($z \ga…
Velocity and Mass Functions of Galactic Halos: Evolution and Environmental Dependence
Yair Sigad, Tsafrir S. Kolatt, James S. Bullock +4
We study the distribution functions of mass and circular velocity for dark matter halos in N-body simulations of the CDM cosmology, addressing redshift and environmental depende…