Overmerging in N-body simulations
Astrophysics
2007-05-23 v1
Abstract
The aim of this paper is to clarify the notion and cause of overmerging in N-body simulations, and to present analytical estimates for its timescale. Overmerging is the disruption of subhaloes within embedding haloes due to {\it numerical} problems connected with the discreteness of N-body dynamics. It is shown that the process responsible for overmerging is particle-subhalo two-body heating. Various solutions to the overmerging problem are discussed
Cite
@article{arxiv.astro-ph/0002027,
title = {Overmerging in N-body simulations},
author = {Eelco van Kampen},
journal= {arXiv preprint arXiv:astro-ph/0002027},
year = {2007}
}
Comments
4 pages, 1 figure, submitted to Monthly Notices