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Examining the Coronal Source and Inner Heliospheric Evolution of a Stream Sampled by Parker Solar Probe and Solar Orbiter

crossref(2024)

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Abstract
With the growing number of solar probes across the inner heliosphere, our community, now more than ever, is well placed to continuously track the formation and supersonic expansion of the solar wind from the Sun. To capture the conditions of solar wind release connected to heliospheric structures, it is fundamental to link near-synchronous measurements of its state in the corona to the associated stream’s interplanetary propagation. This goal can be achieved through well-aligned spacecraft conjunctions, measuring local plasma conditions, with integrated remote sensing observations of the stream’s coronal birthplace. As such, this work traces a solar wind stream from its source to interplanetary space through combined remote (Solar Orbiter/FSI and SPICE, SDO/AIA, Hinode/EIS) and in situ (Parker Solar Probe, Solar Orbiter) observations of the same solar wind stream at two heliospheric distances. Using remote coverage of the source region’s thermal and elemental composition properties, the solar wind is connected throughout the heliosphere by its heavy ion composition to relate energetics of the wind at different stages of its heliospheric evolution to its source region conditions.
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要点】:本文通过结合遥感与实地观测手段,追踪了一个太阳风流的源头至星际空间的演变过程,揭示了太阳风释放条件与星际结构之间的联系。

方法】:研究采用Solar Orbiter/FSI和SPICE、SDO/AIA、Hinode/EIS的遥感数据以及Parker Solar Probe和Solar Orbiter的实地观测数据,对同一太阳风流的两个日球层距离进行观测。

实验】:实验通过综合分析太阳风流的源头区域的温度和元素组成特性,利用重离子成分将太阳风在整个日球层的不同阶段与其源头区域条件联系起来,具体使用了Solar Orbiter/FSI和SPICE、SDO/AIA、Hinode/EIS以及Parker Solar Probe和Solar Orbiter的观测数据。