# The effect of magnetic twist on resonant absorption of slow sausage waves in magnetic flux tubes

## TL;DR

This paper investigates how magnetic twist influences the damping of slow sausage waves in solar flux tubes, revealing that twist can significantly enhance wave damping through resonant absorption.

## Contribution

It provides a numerical analysis of the damping rates of sausage modes considering magnetic twist, extending previous models to more realistic twisted flux tube conditions.

## Key findings

- Magnetic twist increases the damping rate of sausage modes.
- Resonant absorption is more effective in twisted flux tubes.
- Twist can cause strong damping compared to untwisted cases.

## Abstract

Observations show that twisted magnetic flux tubes are present throughout the sun's atmosphere. The main aim of this work is to obtain the damping rate of sausage modes in the presence of magnetic twist. Using the connection formulae obtained by Sakurai et al. (1991), we investigate resonant absorption of the sausage modes in the slow continuum under photosphere conditions. We derive the dispersion relation and solve it numerically and consequently obtain the frequencies and damping rates of the slow surface sausage modes. We conclude that the magnetic twist can result in strong damping in comparison with the untwisted case.