从形成到破裂：观测太阳耀斑电流片的多相演化
From Formation to Disruption: Observing the Multiphase Evolution of a Solar Flare Current Sheet
摘要：
在电流片中，磁能通过重联释放出来并转化为其他形式，被认为在太阳耀斑中发挥着核心作用，太阳耀斑是日光层中最强烈的爆炸。然而，对电流片的演化及其随后在耀斑相关现象（如粒子加速）中的作用却知之甚少。在这里，我们报告与美国宇航局的太阳动力学天文台获得的观测结果，揭示了一个多阶段的演变的电流片在早期阶段的太阳耀斑，从它的形成准稳定的演变和中断。我们的观测结果对于理解爆发性太阳耀斑早期阶段重联的发生和演化具有重要意义。
英文摘要：
A current sheet, where magnetic energy is liberated through reconnection and is converted to other forms, is thought to play the central role in solar flares, the most intense explosions in the heliosphere. However, the evolution of a current sheet and its subsequent role in flare-related phenomena such as particle acceleration is poorly understood. Here we report observations obtained with NASA's Solar Dynamics Observatory that reveal a multiphase evolution of a current sheet in the early stages of a solar flare, from its formation to quasi-stable evolution and disruption. Our observations have implications for the understanding of the onset and evolution of reconnection in the early stages of eruptive solar flares.
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