Abstract

When spacecraft cross the heliospheric plasma sheet (HPS) that separates large-scale magnetic sectors of opposite directions in the solar wind, multiple rapid fluctuations in the sign of the magnetic radial component are often observed. These fluctuations indicate the change of the sign of the azimuth electric current density within the HPS. Possible mechanisms of formation of the multilayered current structure of the HPS are proposed. Within the context of a stationary magnetohydrodynamic solar wind model, we test one of the most popular hypotheses regarding an extension of multiple current sheets from the streamer belt oriented along the neutral line of the solar magnetic field into the solar wind. Properties of self-consistent distributions of the solar wind key characteristics are investigated as function of the fine structure of streamers. The results show that both single and multiple streamers can be the source of the set of a multilayered structure with alternating azimuthal currents. The significance of the results for the interpretation of solar wind data is discussed.

中文翻译：

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在等离子层中形成多个电流层

摘要

当航天器越过将太阳方向上相反方向的大规模磁区分开的日圆等离子片（HPS）时，经常会观察到磁性径向分量符号的多次快速波动。这些波动表明HPS中方位电流密度的符号变化。提出了形成HPS多层电流结构的可能机理。在静止的磁流体动力太阳风模型的背景下，我们测试了最流行的假说之一，该假说涉及将多个电流板从沿着太阳磁场的中性线定向的拖缆带延伸到太阳风中。研究了太阳风关键特性的自洽分布特性与拖缆精细结构的关系。结果表明，单个和多个拖缆都可以是具有交替方位角电流的多层结构集的来源。讨论了结果对于解释太阳风数据的意义。