Abstract

The propagation of linear Alfvén waves with periods of 10–200 s from the photosphere to the solar chromosphere under the conditions of an isothermal atmosphere taking into account the amplitude-phase relationships are considered. It was found that the amplitude of the wave velocity perturbation increases and the magnetic field perturbation decreases with increasing height, while the phase difference between the perturbations tends to π/2. The so-called turning points cannot adequately characterize the energy flux of Alfvén waves. This conclusion indicates that results based on the analysis of oscillation theorems must be revised. It is shown that the efficiency of wave-energy transfer increases with increasing frequency of Alfvén modes (when dissipative processes are disregarded).

中文翻译：

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太阳大气中Alfvén波的能量传递特征

摘要

考虑到振幅-相位关系，在等温大气条件下，线性Alfvén波从光球到太阳色球的传播周期为10-200 s。发现随着高度的增加，波速摄动的幅度增加，而磁场摄动减小，而摄动之间的相位差趋于π/ 2。所谓的转折点不能充分表征Alfvén波的能量通量。该结论表明，必须修改基于振动定理的分析结果。结果表明，波能传递的效率随着Alfvén模频率的增加而增加（当忽略耗散过程时）。