Pulse propagation in a magnetic flux tube
Pulse propagation in a magnetic flux tube
复制标题
磁通量管中的脉冲传播
DOI：
10.1086/159948
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
B. Roberts
中科院分区：
文献类型：
--
作者：
I. C. Rae;B. Roberts
研究了脉冲沿埋入重力分层大气中的等温磁通管绝热传播时的线性发展。结果表明，在静止环境下，管内纵向扰动服从Klein-Gordon方程。脉冲产生的扰动导致波前以亚音速和亚阿尔文管速传播；波前跟随以管频率振荡的尾迹。给出了太阳光球层条件下的结果。
The linear development of a pulse as it propagates adiabatically along an isothermal magnetic flux tube embedded in a gravitationally stratified atmosphere is studied. It is shown that, for a quiescent environment, longitudinal disturbances in the tube are governed by an equation of the Klein-Gordon type. An impulsively generated disturbance results in a wave front propagating at the subsonic and subAlfvenic tube speed; the wave front trails a wake oscillating at the tube frequency. The results are illustrated for solar photospheric conditiions.