Nonlinear radial oscillations of coronal loops

被引：3
|
作者：
Mikhalyaev, B. B. [1 ]
Ruderman, M. S. [2 ,3 ]
Varun, E. Naga [1 ]
机构：
[1] Kalmyk Gorodovikov State Univ, Elista, Russia
[2] Univ Sheffield, Sheffield, S Yorkshire, England
[3] Russian Acad Sci, Space Res Inst, Moscow 117997, Russia
来源：
GEOMAGNETISM AND AERONOMY | 2016年 / 56卷 / 08期
关键词：
WAVES; PROPAGATION; ATMOSPHERE;
D O I：
10.1134/S0016793216080168
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The behavior of radial oscillations of coronal magnetic tubes is considered in a weakly nonlinear approximation. The nonlinear Schrodinger equation, the coefficients of which are found from the tube and radial mode parameters, has been obtained for the oscillation amplitude. The coefficients have been calculated for the fundamental radial mode, which is characterized by the absence of the cutoff in the region of low frequencies. It has been shown that the modulation instability condition is satisfied in a wide range of mode parameter values, which indicates that large-amplitude radial oscillations can exist in coronal loops.
引用
收藏
页码：1040 / 1044
页数：5
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