Coronal mass ejections (CMEs) represent one type of the major eruption from the Sun. Their interplanetary counterparts, the interplanetary CMEs (ICMEs), are the direct manifestations of these structures when they propagate into the heliosphere and encounter one or more observing spacecraft. The ICMEs generally exhibit a set of distinctive signatures from the in-situ spacecraft measurements. A particular subset of ICMEs, the so-called Magnetic Clouds (MCs), is more uniquely defined and has been studied for decades, based on in-situ magnetic field and plasma measurements. By utilizing the latest multiple spacecraft measurements and analysis tools, we report a detailed study of the internal magnetic field configuration of an MC event observed by both the Solar Orbiter (SO) and Wind spacecraft in the solar wind near the Sun-Earth line. Both two-dimensional (2D) and three-dimensional (3D) models are applied to reveal the flux rope configurations of the MC. Various geometrical as well as physical parameters are derived and found to be similar within error estimates for the two methods. These results quantitatively characterize the coherent MC flux rope structure crossed by the two spacecraft along different paths. The implication for the radial evolution of this MC event is also discussed.

中文翻译：

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来自太阳轨道器和风力航天器原位测量的磁云的配置

日冕物质抛射（CME）代表了太阳主要喷发的一种类型。它们的行星际对应物，行星际 CME (ICME)，是这些结构在传播到日光层并遇到一个或多个观测航天器时的直接表现。ICME 通常表现出一组来自原位航天器测量的独特特征。基于原位磁场和等离子体测量，ICME 的一个特定子集，即所谓的磁云 (MC)，其定义更为独特，并且已经研究了数十年。通过利用最新的多个航天器测量和分析工具，我们报告了对太阳轨道器 (SO) 和风能航天器在日地线附近太阳风中观测到的 MC 事件的内部磁场配置的详细研究。应用二维 (2D) 和三维 (3D) 模型来揭示 MC 的磁通绳配置。导出了各种几何和物理参数，并发现这两种方法的误差估计是相似的。这些结果定量地表征了两个航天器沿不同路径穿过的相干 MC 磁通绳结构。还讨论了这次 MC 事件径向演化的含义。