4 papers · 1 filter
Formation of Dark Matter Halos
J. R. Primack, J. S. Bullock, A. A. Klypin +1
This article concerns the formation and structure of dark matter halos, including (1) their radial density profiles, (2) their abundance, and (3) their merger rates. The last topic…
The Star Formation History in a Hierarchical Universe
Rachel S. Somerville, Joel R. Primack
Observations now probe the star formation history of the Universe back to a redshift of . We investigate whether the predictions of semi-analytic models of galaxy formation…
Cold + Hot Dark Matter After Super-Kamiokande
Joel R. Primack, Michael A. K. Gross
The recent atmospheric neutrino data from Super-Kamiokande provide strong evidence of neutrino oscillations and therefore of non-zero neutrino mass. These data imply a lower limit…
Comments on non-Gaussian density perturbations and the production of primordial black holes
James S. Bullock, Joel R. Primack
We review the basic arguments for the likelihood of non-Gaussian density perturbations in inflation models with primordial black hole (PBH) production. We discuss our derived distr…