AI 中文总结
本文利用NVST、CHASE与SDO的协同观测，发现运动磁特征等小尺度磁结构可通过磁通量对消，使超半影纤维与微型暗条重联触发太阳日冕喷流。
AI 中文摘要
日冕喷流是太阳大气中高度动态的现象，但其驱动机制仍是研究热点。本文基于新真空太阳望远镜（NVST）、中国Hα太阳探测卫星（CHASE）与太阳动力学天文台（SDO）的协同观测，报道了一起由超半影纤维与微型暗条相互作用触发的日冕喷流事件。这些纤维锚定在黑子的负极性区与一个随运动磁特征（MMF）出现的正极性区之间；随着正极性向外迁移，纤维伸长并与微型暗条相互作用，该暗条的一个足点扎根于预先存在的负极性场中。相互作用处的增亮，以及暗条足点从预先存在的负极性向黑子的连通性变化，表明发生了磁重联。该事件产生了一条狭窄的高温喷流，伴随有更宽的低温分量；低温等离子体呈现顺时针旋转，为磁重联过程中磁扭缠的转移提供了证据。在喷流爆发前及期间，观测到持续的磁通量对消。这些观测表明，MMF等小尺度磁结构可显著影响微型暗条的爆发，并凸显了通量对消在触发日冕喷流活动中的重要作用。
英文摘要
Coronal jets are highly dynamic phenomena in the solar atmosphere, yet their driving mechanisms remain an active topic of investigation. In this paper, we report a coronal jet triggered by the interaction between super-penumbral fibrils and a mini-filament, based on coordinated observations from the New Vacuum Solar Telescope (NVST), the Chinese H$α$ Solar Explorer (CHASE), and the Solar Dynamics Observatory (SDO). The fibrils were anchored between the negative-polarity region of a sunspot and an emerging positive-polarity region associated with a moving magnetic feature (MMF). As the positive polarity migrated outward, the fibrils elongated and interacted with the mini-filament, one of whose footpoints was rooted in pre-existing negative-polarity fields. Intense brightenings at the interaction site, together with changes in the connectivity of the mini-filament footpoint from the pre-existing negative polarity to the sunspot, indicate the occurrence of magnetic reconnection. The event produced a narrow hot jet accompanied by a broader cool component. The cool plasma exhibited a clockwise rotation, providing evidence for the transfer of magnetic twist during reconnection. Persistent magnetic flux cancellation was observed before and during the jet eruption. These observations demonstrate that small-scale magnetic structures, such as MMFs, can significantly influence mini-filament eruptions and highlight the important role of flux cancellation in triggering coronal jet activity.
Comments18 pages, 8 figures, accepted by ApJ
