论文标题
磁重新连接期间的浆液,流和喷气机在发生故障的太阳喷发中
Plasmoids, Flows, and Jets During Magnetic Reconnection in a Failed Solar Eruption
论文作者
论文摘要
我们使用SDO/AIA,IRIS,Stereo和Hinode/hinode/Sot的多波长观测值报告了2014年4月3日在活动区域12018中发生故障和耀斑的详细分析。在细丝缓慢上升之前的两个小时内,观察到至少有四个喷气机从这个小活跃区域(大明亮点)的缘散发出来。在细丝中,可以看到慢上升的多个等离子体斑点,很可能是在尖口附近的无点电流板中形成的。随后的细丝爆发在虹膜视野之外,伴随着耀斑,但仍然受到限制。在爆炸性的耀斑重新连接阶段,额外的斑点重复出现,并在爆发的细丝下方的耀斑区域内双向移动。灯丝在上升时扭结,旋转并进行了腿腿重新连接,但未能产生冠状质量弹出。在细丝慢升/前闪光阶段中检测到风扇环中的微小喷气样特征。我们将它们解释为环境磁场和浆液之间重新连接的特征,使无效的纸张和沿风扇循环流式传输。我们将我们对这些微小喷气式的解释进行了对比,这些喷气机发生在失败的细丝爆发的大规模背景下,与Antolin等人提出的局部纳米纳米热的场景。 (2021)。
We report a detailed analysis of a failed eruption and flare in active region 12018 on 2014 April 3 using multiwavelength observations from SDO/AIA, IRIS, STEREO, and Hinode/SOT. At least four jets were observed to emanate from the cusp of this small active region (large bright point) with a null-point topology during the two hours prior to the slow rise of a filament. During the filament slow rise multiple plasma blobs were seen, most likely formed in a null-point current sheet near the cusp. The subsequent filament eruption, which was outside the IRIS field of view, was accompanied by a flare but remained confined. During the explosive flare reconnection phase, additional blobs appeared repetitively and moved bidirectionally within the flaring region below the erupting filament. The filament kinked, rotated, and underwent leg-leg reconnection as it rose, yet it failed to produce a coronal mass ejection. Tiny jet-like features in the fan loops were detected during the filament slow-rise/pre-flare phase. We interpret them as signatures of reconnection between the ambient magnetic field and the plasmoids leaving the null-point sheet and streaming along the fan loops. We contrast our interpretation of these tiny jets, which occur within the large-scale context of a failed filament eruption, with the local nanoflare-heating scenario proposed by Antolin et al. (2021).