2.3k citations · 46.3k across the 327 of their papers we have counts for
6 papers · 2 filters
A universal angular momentum profile for galactic halos
James S. Bullock, Avishai Dekel, Tsafrir S. Kolatt +4
[Abridged] We study the angular-momentum profiles of a statistical sample of halos drawn from a high-resolution N-body simulation of the LCDM cosmology. We find that the cumulative…
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…
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…
Cosmological Parameters from Velocities, CMB and Supernovae
S. L. Bridle, I. Zehavi, A. Dekel +3
We compare and combine likelihood functions of the cosmological parameters Omega_m, h and sigma_8, from peculiar velocities, CMB and type Ia supernovae. These three data sets direc…
Strong Evolution in the Luminosity-Velocity Relation at z>1?
James S. Bullock, Avishai Dekel, Joel R. Primack +1
We present a method for constraining the evolution of the galaxy luminosity-velocity (LV) relation in hierarchical scenarios of structure formation. The comoving number density of…
Measuring the Nonlinear Biasing Function from a Galaxy Redshift Survey
Yair Sigad, Enzo Branchini, Avishai Dekel
We present a simple method for evaluating the nonlinear biasing function of galaxies from a redshift survey. The nonlinear biasing is characterized by the conditional mean of the g…