The Redshift Evolution of LCDM Halo Parameters
Abstract
We study the mass and redshift dependence of the concentration parameter in Nbody simulations spanning masses from to and redshifts from 0 to 2. We present a series of fitting formulas that accurately describe the time evolution of the concentration-mass relation since z=2. Using arguments based on the spherical collapse model we study the behaviour of the scale length of the density profile during the assembly history of haloes, obtaining physical insights on the origin of the observed time evolution of the concentration mass relation. We present preliminary results of the implementation of this model in the prediction of the values of the concentration parameter for different masses and redshifts.
Keywords
Cite
@article{arxiv.1102.2186,
title = {The Redshift Evolution of LCDM Halo Parameters},
author = {J. C. Muñoz-Cuartas and Andrea V. Macciò and Stefan Gottlöber and Aaron Dutton},
journal= {arXiv preprint arXiv:1102.2186},
year = {2011}
}
Comments
9 pages, 4 figures. Proceedings of CRF2010, DESY Hamburg, Nov 9-12 2010