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astro-ph2001
Concentrations and Assembly Histories of Dark Matter Halos
Risa H. Wechsler, James S. Bullock, J. R. Primack +2
We study the relation between the density profiles of dark matter halos and their mass assembly histories, using a statistical sample of halos in a high-resolution N-body simulatio…
astro-ph2001
Tilted CDM versus WDM in the Subgalactic Scuffle
James S. Bullock
Although the currently favored cold dark matter plus cosmological constant model (LCDM) has proven to be remarkably successful on large scales, on subgalactic scales it faces some…
astro-ph2001
Dark Matter Properties and Halo Central Densities
S. M. Khairul Alam, James S. Bullock, David H. Weinberg
Using an analytic model calibrated against numerical simulations, we calculate the central densities of dark matter halos in a ``conventional'' cold dark matter model with a cosmol…