23 papers
The role of resonances in barred galaxies
Daniel Ceverino, Anatoly Klypin
The dynamics of the inner disk of many galaxies is dominated by bars. As a result, resonances between the bar and the disk become an important factor. In order to detect resonances…
Simulations of the Local Universe
Stefan Gottloeber, Anatoly Klypin, Andrey Kravtsov +2
The theory of structure formation predicts that galaxies form within extended massive dark matter halos built from smaller pieces that collided and merged, resulting in the hierarc…
Spin Profile of Galactic Halos and Disk Formation
A. Dekel, J. S. Bullock, C. Porciani +4
We summarize recent developments in the study of the origin of halo spin profiles and preliminary implications on disk formation. The specific angular-momentum distributions within…
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…
Numerical Simulations in Cosmology III: Dark Matter Halos
Anatoly Klypin
Properties of dark matter halos are reviewed. Taken from different publications, we present results on (1) the mass and velocity functions, (2) density and velocity profiles, and (…
Numerical Simulations in Cosmology II: Spatial and Velocity Biases
Anatoly Klypin
We give a summary of recent results on spatial and velocity biases in cosmological models. Progress in numerical techniques made it possible to simulate halos in large volumes with…