Efficient resonant fast-Alfvén wave coupling as a minimization principle

Andrew Nicholas Wright

doi:10.1029/2023ja031779

Efficient resonant fast-Alfvén wave coupling as a minimization principle

Andrew Nicholas Wright^*

^*Corresponding author for this work

Applied Mathematics

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

3 Downloads (Pure)

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.

Original language	English
Article number	e2023JA031779
Journal	Journal of Geophysical Research: Space Physics
Volume	128
Issue number	12
Early online date	22 Dec 2023
DOIs	https://doi.org/10.1029/2023ja031779
Publication status	Published - Dec 2023

Keywords

Resonant Alfven waves
Fast-Alfven wave coupling
Nonuniform medium
Resonance Maps
Minimization principle

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10.1029/2023ja031779Licence: CC BY

Wright-2023-JGRSpacePhysics-EfficientResonantPrinciple_CC
Copyright © 2023. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Final published version, 527 KBLicence: CC BY

Solar and Magnetospheric Plasmas: Solar and Magnetospheric Plasmas: Theory and Application
Neukirch, T. (PI), Archontis, V. (CoI), De Moortel, I. (CoI), Hood, A. W. (CoI), Mackay, D. H. (CoI), Parnell, C. E. (CoI) & Wright, A. N. (CoI)
Science & Technology Facilities Council
1/04/22 → 31/03/25
Project: Standard

Cite this

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title = "Efficient resonant fast-Alfv{\'e}n wave coupling as a minimization principle",

abstract = "The resonant coupling of the fast magnetosonic wave to the Alfv{\'e}n 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.",

keywords = "Resonant Alfven waves, Fast-Alfven wave coupling, Nonuniform medium, Resonance Maps, Minimization principle",

author = "Wright, {Andrew Nicholas}",

note = "Funding: Science and Technology Facilities Council - ST/W001195/1.",

year = "2023",

month = dec,

doi = "10.1029/2023ja031779",

language = "English",

volume = "128",

journal = "Journal of Geophysical Research: Space Physics",

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T1 - Efficient resonant fast-Alfvén wave coupling as a minimization principle

AU - Wright, Andrew Nicholas

N1 - Funding: Science and Technology Facilities Council - ST/W001195/1.

PY - 2023/12

Y1 - 2023/12

N2 - 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.

AB - 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.

KW - Resonant Alfven waves

KW - Fast-Alfven wave coupling

KW - Nonuniform medium

KW - Resonance Maps

KW - Minimization principle

U2 - 10.1029/2023ja031779

DO - 10.1029/2023ja031779

M3 - Article

SN - 2169-9402

VL - 128

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

IS - 12

M1 - e2023JA031779

ER -

Efficient resonant fast-Alfvén wave coupling as a minimization principle

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Solar and Magnetospheric Plasmas: Solar and Magnetospheric Plasmas: Theory and Application

Cite this