Electric Current Equilibrium in the Corona
Solar and Stellar Astrophysics
2015-06-15 v1
Abstract
A hyperbolic flux-tube configuration containing a null point below the flux rope is considered as a pre-eruptive state of coronal mass ejections that start simultaneously with flares. We demonstrate that this configuration is unstable and cannot exist for a long time in the solar corona. The inference follows from general equilibrium conditions and from analyzing simple models of the flux-rope equilibrium. A direct consequence of the stable flux-rope equilibrium in the corona are separatrices in the horizontal-field distribution in the chromosphere. They can be recognized as specific "herring-bone structures" in a chromospheric fibril pattern.
Cite
@article{arxiv.1302.4336,
title = {Electric Current Equilibrium in the Corona},
author = {Boris Filippov},
journal= {arXiv preprint arXiv:1302.4336},
year = {2015}
}
Comments
12 pages, 5 figures