Topological plasma oscillations in the solar tachocline
Solar and Stellar Astrophysics
2024-01-17 v1 High Energy Physics - Phenomenology
Plasma Physics
Space Physics
Abstract
We study the properties of plasma oscillations in the solar tachocline using shallow-water magnetohydrodynamic equations. These oscillations are expected to correlate with solar activity. We find new qualitative features in the equatorial spectrum of magnetohydrodynamic oscillations associated with magneto-Rossby and magneto-Yanai waves. By studying this spectrum in terms of band theory, we find that magneto-Kelvin and magneto-Yanai waves are topologically protected. This highlights the important role of these two classes of waves, as robust features of the plasma oscillation spectrum, in the interpretation of helioseismological observations.
Keywords
Cite
@article{arxiv.2401.07622,
title = {Topological plasma oscillations in the solar tachocline},
author = {Ruben Lier and Richard Green and Jan de Boer and Jay Armas},
journal= {arXiv preprint arXiv:2401.07622},
year = {2024}
}