The nature of fore-wake excitations created by a charged object moving in a magnetized plasma is investigated using particle-in-cell simulations. Our studies establish for the first time the existence of precursor magneto-sonic solitons traveling ahead of a moving charged object. The nature of these excitations and the conditions governing their existence are delineated. We also confirm earlier molecular dynamic and fluid simulation results related to electrostatic precursor solitons obtained in the absence of a magnetic field. The electromagnetic precursors could have interesting practical applications such as in the interpretation of observed nonlinear structures during the interaction of the solar wind with the earth and the moon and may also serve as useful tracking signatures of charged space debris traveling in the ionosphere.

中文翻译：

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来自移动电荷束的等离子体中的前驱磁声孤子

使用细胞内粒子模拟研究了由在磁化等离子体中移动的带电物体产生的前唤醒激发的性质。我们的研究首次确定了在移动的带电物体之前行进的前体磁声孤子的存在。描述了这些激发的性质和支配它们存在的条件。我们还确认了与在没有磁场的情况下获得的静电前体孤子相关的早期分子动力学和流体模拟结果。电磁前体可能具有有趣的实际应用，例如在太阳风与地球和月球相互作用期间观察到的非线性结构的解释中，也可以作为带电空间碎片在电离层中传播的有用跟踪特征。