Evolution of Dark Matter Halo Density Profiles and Substructure from ΛCDM Simulations

Details Evolution of Dark Matter Halo Density Profiles and Substructure from ΛCDM Simulations Evolution of Dark Matter Halo Density Profiles and Substructure from ΛCDM Simulations

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005iaus..225..231r&link_type=abstract

Gravitational Lensing Impact on Cosmology, IAU Symposium, vol. 225. Edited by Yannick Mellier and Georges Meylan, ISBN 052185196

Physics

Scientific paper

We use ΛCDM numerical simulations to model the density profiles and substructure populations in a set of sixteen dark matter halos with resolutions of up to seven million particles within the virial radius. These simulations allow us to follow robustly the formation and evolution of the central cusp over a large mass range of 1011 to 1014 Msun down to approximately 0.5% of the virial radius, and from redshift 5 to the present. The cusp of the density profile is set at redshifts of two or greater and remains remarkably stable to the present time, when considered in non-comoving coordinates.

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