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
收藏
页码：547 / 550
页数：4
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