The Structure Of Dark Matter Halos From The Lasdamas Project

Details The Structure Of Dark Matter Halos From The Lasdamas Project The Structure Of Dark Matter Halos From The Lasdamas Project

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21724908m&link_type=abstract

American Astronomical Society, AAS Meeting #217, #249.08; Bulletin of the American Astronomical Society, Vol. 43, 2011

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We examine the density profiles of dark matter halos by analyzing data from the LasDamas (Large Suite of Dark Matter Simulations) project. LasDamas consists of a large suite of cosmological N-body simulations that follow the evolution of dark matter in the universe. The aim of LasDamas is to obtain adequate resolution in many large boxes, resulting in a huge volume appropriate for statistical studies of galaxies and halos. We measure density profiles for these halos, and fit NFW and other models to our measurements. With such a large dataset, we are able to study the full density profile distribution and its dependence on mass, redshift, and environment -- even in the regime of rare cluster-size halos. Finally, we investigate the sensitivity of our results to particle mass resolution, as well as choice of halo definition.

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