Stirring N-body systems: Universality of end states
Astrophysics of Galaxies
2015-06-04 v1 Cosmology and Nongalactic Astrophysics
Abstract
We study the evolution of the phase-space of collisionless N-body systems under repeated stirrings or perturbations. We find convergence towards a limited solution group, in accordance with Hansen 2010, that is independent of the initial system and environmental conditions, paying particular attention to the assumed gravitational paradigm (Newtonian and MOND). We examine the effects of changes to the perturbation scheme and in doing so identify a large group of perturbations featuring radial orbit instability (ROI) which always lead to convergence. The attractor is thus found to be a robust and reproducible effect under a variety of circumstances.
Keywords
Cite
@article{arxiv.1204.2764,
title = {Stirring N-body systems: Universality of end states},
author = {Jeremy A. Barber and Hongsheng Zhao and Xufen Wu and Steen H. Hansen},
journal= {arXiv preprint arXiv:1204.2764},
year = {2015}
}