The Non-parametric Concentration of Dark Matter Halos in Cosmological N-body Simulations
Abstract
A wealth of information on the evolution of structure in the universe can be gained by measuring how the properties of dark matter halos in numerical simulations evolve over time. However, the techniques commonly used to measure halo properties often make assumptions about a halo's structure that are not strictly true, resulting in systematically biased results. TesseRACt, a non-parametric tessellation-based technique for measuring halo concentration in N-body simulations, does not make any assumptions about a halo's structure, allowing halos to be axisymmetric, triaxial, contain substructure, and have ill-defined centers. Preliminary results are presented using TesseRACt to measure the concentration of dark matter halos in cosmological N-body simulations.
- Publication:
-
American Astronomical Society Meeting Abstracts #227
- Pub Date:
- January 2016
- Bibcode:
- 2016AAS...22731605L