Simulation of the loss-cone instability in spherical systems. I. Dominating harmonic potential
Astrophysics of Galaxies
2020-01-08 v1
Abstract
A new so-called `gravitational loss-cone instability' in stellar systems has recently been investigated theoretically in the framework of linear perturbation theory and proved to be potentially important in understanding the physical processes in centres of galaxies, star clusters, and the Oort comet cloud. Using N-body simulations of a toy model, we confirm previous findings for the harmonic dominating potential and go beyond the linear theory. Unlike the well-known instabilities, the new one shows no notable change in the spherical geometry of the cluster, but it significantly accelerates the speed of diffusion of particles in phase space leading to an early instability saturation.
Cite
@article{arxiv.1912.07839,
title = {Simulation of the loss-cone instability in spherical systems. I. Dominating harmonic potential},
author = {E. V. Polyachenko and P. Berczik and A. Just and I. G. Shukhman},
journal= {arXiv preprint arXiv:1912.07839},
year = {2020}
}
Comments
6 pages, 9 figures, MNRAS accepted