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- James S. Bullock, Amit Dekel, +4 authors Joel R. Primack
- 2005

We study the angular-momentum profiles of a statistical sample of halos drawn from a high-resolution N -body simulation of the Î›CDM cosmology. We find that the cumulative mass distribution ofâ€¦ (More)

According to the hierarchical clustering scenario, galaxies are assembled by merging and accretion of numerous satellites of different sizes and masses. This ongoing process is not 100% efficient inâ€¦ (More)

A significant fraction of mass of galaxies is provided by the dark matter. To some extent galaxies are large dense halos of the dark matter. However, dissipationless cosmological N -body simulationsâ€¦ (More)

We present a new high-resolution N -body algorithm for cosmological simulations. The algorithm employs a traditional particle-mesh technique on a cubic grid and successive multilevel relaxations onâ€¦ (More)

- James S. Bullock, Tsafrir Kolatt, +5 authors Amit Dekel
- 1999

We study dark-matter halo density profiles in a high-resolution N-body simulation of a Î›CDM cosmology. Our statistical sample contains âˆ¼ 5000 haloes in the range 10 âˆ’ 10hMâŠ™ and the resolution allowsâ€¦ (More)

We present cosmological simulations which closely mimic the real Universe within âˆ¼ 100 Mpc of the Local Group. The simulations, called Constrained Simulations, reproduce the large-scale density fieldâ€¦ (More)

- Andrey V. Kravtsov, Andreas A. Berlind, +4 authors Joel R. Primack
- 2008

We analyze the halo occupation distribution (HOD) and two-point correlation function of galaxy-size dark matter halos using high-resolution dissipationless simulations of the concordance flat Î›CDMâ€¦ (More)

- Brandon A. Allgood, Ricardo A. Flores, +4 authors James S. Bullock
- 2006

Using six high resolution dissipationless simulations with a varying box size in a flat LCDM universe, we study the mass and redshift dependence of dark matter halo shapes for Mvir = 9.0 Ã— 10 11 âˆ’â€¦ (More)

- Risa H. Wechsler, Andrew R. Zentner, James S. Bullock, Andrey V. Kravtsov
- 2005

We investigate the dependence of dark matter halo clustering on halo formation time, density profile concentration, and subhalo occupation number, using high-resolution numerical simulations of aâ€¦ (More)

We present results of a study of the formation and evolution of the dark matter (DM) halos in a COBE-normalized spatially flat Î›CDM model (â„¦ 0 = 1 âˆ’ â„¦ Î› = 0.3; h = 0.7). The dynamics of 256 3 DMâ€¦ (More)