Excitation and damping of disturbances in cylindrical coronal loops

被引：8

作者：

Terradas, J ^{[1
]}

Oliver, R ^{[1
]}

Ballester, JL ^{[1
]}

机构：

[1] Univ Illes Balears, Dept Fis, Palma de Mallorca 07122, Spain

来源：

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES | 2006年 / 364卷 / 1839期

关键词：

magnetohydrodynamic; sun's corona; sun's magnetic fields; waves;

D O I：

10.1098/rsta.2005.1718

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The excitation and damping of transversal coronal loop oscillations is studied using one-and two-dimensional models of line-tied cylindrical loops. By solving the time-dependent magnetohydrodynamic equations it is shown how an initial disturbance generated in the solar corona induces kink mode oscillations. We investigate the effect of the disturbance on a loop with a non-uniform boundary layer. In particular, a strong damping of transversal oscillations due to resonant absorption is found, such as predicted by previous works based on normal mode analysis.

引用

页码：547 / 550

页数：4

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