How does an asymmetric magnetic field change the vertical structure of a hot accretion flow?
Abstract
This paper explores the effects of large-scale magnetic fields in hot accretion flows for asymmetric configurations with respect to the equatorial plane. The solutions that we have found show that the large-scale asymmetric magnetic field can significantly affect the dynamics of the flow and also cause notable outflows in the outer parts. Previously, we treated a viscous resistive accreting disc in the presence of an odd symmetric field about the equatorial plane. Now we extend our earlier work by taking into account another configuration of large-scale magnetic field which is no longer symmetric. We provide asymmetric field structures with small deviations from even and odd symmetric field. Our results show that the disc's dynamics and appearance become different above and below the equatorial plane. The set of solutions also predicts that even a small deviation in a symmetric field causes the disc to compress on one side and expand on the other. In some cases, our solution represents a very strong outflow from just one side of the disc. Therefore, the solution may potentially explain the origin of one-sided jets in radio galaxies.
Keywords
Cite
@article{arxiv.1705.07190,
title = {How does an asymmetric magnetic field change the vertical structure of a hot accretion flow?},
author = {Maryam Samadi and Shahram Abbassi and Richard Lovelace},
journal= {arXiv preprint arXiv:1705.07190},
year = {2017}
}
Comments
accepted for publication in MNRAS