The effect of magnetic twist on resonant absorption of slow sausage waves in magnetic flux tubes
arXiv:1903.04171 · doi:10.3847/1538-4357/ab24c4
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.
arXiv comment37 pages, 14 figures
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Cited by in corpus (5)
- A Statistical Study of Short-period Decayless Oscillations of Coronal Loops in an Active Region
- Magnetoacoustic Wave Energy Dissipation in the Atmosphere of Solar Pores
- Damping of slow surface kink modes in solar photospheric waveguides modeled by one-dimensional inhomogeneities
- The effect of flow on resonant absorption of slow MHD waves in magnetic flux tubes
- The Effect of Flow and Magnetic Twist on Resonant Absorption of Slow MHD Waves in Magnetic Flux Tubes