Efficient resonant fast-Alfvén wave coupling as a minimization principle
Abstract
The resonant coupling of the fast magnetosonic wave to the Alfvén wave is considered in the ideal magnetohydrodynamic limit in a 3D equilibrium. It has previously been shown that the most efficient coupling occurs on particular paths that satisfy the “tangential alignment condition” (Wright et al., 2022, https://doi.org/10.1029/2022ja030294). In this article we show how this criterion is equivalent to a minimization principle which may lead to a deeper understanding of the physics of the wave coupling process.
Citation
Wright , A N 2023 , ' Efficient resonant fast-Alfvén wave coupling as a minimization principle ' , Journal of Geophysical Research: Space Physics , vol. 128 , no. 12 , e2023JA031779 . https://doi.org/10.1029/2023ja031779
Publication
Journal of Geophysical Research: Space Physics
Status
Peer reviewed
ISSN
2169-9402Type
Journal article
Description
Funding: Science and Technology Facilities Council - ST/W001195/1.Collections
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