Resonant Fast-Alfven Wave Coupling in a 3D Coronal Arcade

被引：2
|
作者：
Wright, Andrew [1 ]
Elsden, Thomas [1 ]
机构：
[1] Univ St Andrews, Sch Math & Stat, St Andrews KY16 9SS, Scotland
来源：
PHYSICS | 2023年 / 5卷 / 01期
基金：
英国科学技术设施理事会;
关键词：
magnetohydrodynamic waves; resonance wave coupling; coronal arcade; DISSIPATIVE MHD SOLUTIONS; FIELD-LINE RESONANCES; ABSORPTION;
D O I：
10.3390/physics5010023
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The resonant excitation of Alfven 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 Alfven waves can vary with position throughout the Resonant Zone. Moreover, there are an infinite number of possible paths the resonant waves can exist on.
引用
收藏
页码：310 / 321
页数：12
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