We report microwave spectral imaging observations of an erupting magnetic flux rope during the early impulsive phase of the X8.2-class limb flare on 2017 September 10, obtained by the Expanded Owens Valley Solar Array. A few days prior to the eruption, when viewed against the disk, the flux rope appeared as a reverse S-shaped dark filament along the magnetic polarity inversion line. During the eruption, the rope exhibited a “hot channel” structure in extreme ultraviolet and soft X-ray passbands sensitive to ∼10 MK plasma. The central portion of the flux rope was nearly aligned with the line of sight, which quickly developed into a teardrop-shaped dark cavity during the early phase of the eruption. A long and thin plasma sheet formed below the cavity, interpreted as the reconnection current sheet viewed edge on. A nonthermal microwave source was present at the location of the central current sheet, which extended upward encompassing the dark cavity. A pair of nonthermal microwave...

中文翻译：

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喷发的磁通量绳的微波频谱成像：在三个维度上对标准太阳耀斑模型的启示

我们报告了在2017年9月10日X8.2级肢体火炬的早期脉冲阶段爆发的磁通量绳索的微波光谱成像观察结果，这是由扩展的欧文斯谷太阳能电池阵列获得的。喷发前几天，当相对于磁盘观察时，磁通绳沿着磁极性反转线显示为反向S形暗丝。在喷发过程中，绳索在对约10 MK等离子体敏感的极端紫外线和软X射线通带中表现出“热通道”结构。助熔剂绳的中心部分几乎与视线对齐，在喷发的早期迅速发展成泪珠状的暗腔。在空腔下方形成的细长而薄的等离子板，从边缘上看可理解为重新连接电流板。在中央电流板的位置存在一个非热微波源，该微波源向上延伸并包围了暗腔。一对非热微波...