# How does an asymmetric magnetic field change the vertical structure of a hot accretion flow?

## TL;DR

This study investigates how asymmetric large-scale magnetic fields influence the vertical structure and dynamics of hot accretion flows, revealing significant effects like disc asymmetry and one-sided outflows that could explain certain astrophysical jets.

## Contribution

It extends previous models by analyzing asymmetric magnetic field configurations, demonstrating their impact on accretion disc structure and outflow asymmetry.

## Key findings

- Asymmetric magnetic fields cause disc compression on one side and expansion on the other.
- Small deviations from symmetric fields significantly alter disc dynamics.
- Strong outflows can originate from one side of the disc, explaining one-sided jets.

## 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 $\textbf{B-}$ 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 $\textbf{B-}$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.