Magnetosonic periodic perturbations in a uniform and infinite plasma model are considered. Damping due to compressional viscosity, electrical resistivity, and thermal conduction are taken into account, as well as some heating–cooling function, which may destroy the isentropicity of wave perturbations. The wave vector forms arbitrary angle θ with the equilibrium straight magnetic field, and all perturbations are functions of time and longitudinal coordinate. Variable θ and plasma-β bring essential difficulties in the description of magnetosonic perturbations, which may be fast or slow. Wave damping of each kind depends differently on θ and plasma-β. Longitudinal velocity, which is periodic at any distance from an exciter, is analytically constructed. It approximates the exact solution with satisfactory accuracy.

中文翻译：

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具有机械和热损失以及电阻率的准等熵等离子体中周期性磁声波扰动的描述

考虑了均匀和无限等离子体模型中的磁声周期扰动。考虑了压缩粘度、电阻率和热传导引起的阻尼，以及一些加热-冷却功能，这可能会破坏波扰动的等熵性。波矢与平衡直磁场形成任意角度θ，所有扰动都是时间和纵坐标的函数。变量 θ 和等离子体 β 给磁声波扰动的描述带来了本质上的困难，这可能是快的也可能是慢的。各种波阻尼取决于 θ 和等离子体-β。纵向速度在距激励器的任何距离处都是周期性的，它是通过解析构造的。它以令人满意的精度逼近精确解。