High-frequency waves in hot magnetized solar and stellar coronal plasmas

被引：0

作者：

Ledenev, V. G. ^{[1
]}

Tirsky, V. V. ^{[2
]}

Tomozov, V. M. ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Branch, Inst Solar & Terr Phys, Irkutsk 664003, Russia

[2] Russian Acad Sci, Siberian Branch, Inst Laser Phys, Irkutsk 664003, Russia

来源：

GEOMAGNETISM AND AERONOMY | 2009年 / 49卷 / 07期

关键词：

RECONNECTING CURRENT SHEETS;

D O I：

10.1134/S0016793209070032

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 characteristics of low-damping high-frequency waves in hot magnetized solar and stellar coronal plasmas under the conditions when the electron gyrofrequency omega(He) is equal to or higher than the electron plasma frequency omega(pe) have been analyzed using the numerical solution of the dispersion equation. It is shown that the wave branches corresponding to the Z mode and ordinary waves approach each other when the magnetic field increases and become almost indistinguishable in a wide frequency range at all angles between the wave vector and magnetic field. A branch with anomalous dispersion appears at angles close to 90A degrees. A new interpretation of broadband pulsations and spikes is suggested on the basis of the results.

引用

页码：843 / 849

页数：7

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