Swing amplification and global modes reciprocity in models with cusps
Astrophysics of Galaxies
2018-02-14 v1
Abstract
Using 3D N-body simulations we analyse an onset of the bar in cuspy models, and argue that role of swing amplification is twofold. Amplified shot noise due to disc discreteness hampers bar formation, while induced resonance perturbations allow bar amplitude to overcome shots. A bar pattern speed and a growth rate obtained in N-body simulations agree well with global mode analysis.
Cite
@article{arxiv.1608.01776,
title = {Swing amplification and global modes reciprocity in models with cusps},
author = {Evgeny Polyachenko},
journal= {arXiv preprint arXiv:1608.01776},
year = {2018}
}
Comments
8 pages, 5 figures, accepted to Baltic Astronomy