Resonant fast-Alfvén wave coupling in a 3D coronal arcade

Andrew N. Wright*, Tom Elsden

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

The resonant excitation of Alfvén waves using the fast magnetosonic mode is important in space plasmas. In this paper, we consider a simple model of a three-dimensional (3D) coronal arcade. A numerical approach is used to produce a driven normal mode. We find that resonant coupling can occur in 3D, but there are new features that are absent in 2D. In particular, the polarisation of the Alfvén waves can vary with position throughout the Resonant Zone. Moreover, there are an infinite number of possible paths the resonant waves can exist on.
Original languageEnglish
Pages (from-to)310-321
Number of pages12
JournalPhysics
Volume5
Issue number1
DOIs
Publication statusPublished - 17 Mar 2023

Keywords

  • Magnetohydrodynamic waves
  • Resonance wave coupling
  • Coronal arcade

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