太阳喷流精细结构和动力学的观测研究。I.卫星黑子周围的能量积累过程
Observational Study on the Fine Structure and Dynamics of a Solar Jet. I. Energy Build-Up Process around a Satellite Spot
摘要：
我们报告了2014年11月10日与连续耀斑相关的太阳喷流现象。这些爆发性事件与衰减活动区NOAA 12205中三角洲型太阳黑子周围卫星黑子的出现有关。该喷流的数据由日本京都大学飞田天文台的太阳动力学天文台（SDO）、日出号上的X射线望远镜（XRT）、界面区成像光谱仪（IRIS）和无顶太阳望远镜（DST）提供。这些丰富的数据使我们能够提出这一系列的论文来讨论所观察到的现象的整个过程，包括能量储存，事件触发和能量释放。本文利用光流法分析了活动区附近的光球水平流场，重点研究了能量积累和触发阶段。分析揭示了以下三点。(i)观测到的爆炸现象涉及三个卫星点，其磁通量相继与其先前存在的环境场重新连接。(ii)所有这些卫星黑子都出现在一个关键的三角洲型太阳黑子的护城河区域，特别是在它与邻近的超颗粒或邻近太阳黑子的护城河区域的会聚边界附近。(iii)在喷流喷射点附近，卫星黑子和邻近出射通量的正极性在枢纽三角洲型黑子的护城河区遭遇负极性的全球磁场，沿光球水平流道的会聚边界形成极性反转线。
英文摘要：
We report a solar jet phenomenon associated with successive flares on November 10th 2014. These explosive events were involved with the satellite spots' emergence around a delta-type sunspot in the decaying active region NOAA 12205. The data of this jet was provided by Solar Dynamic Observatory (SDO), X-Ray Telescope (XRT) aboard Hinode, Interface Region Imaging Spectrograph (IRIS) and Domeless Solar Telescope (DST) at Hida Observatory, Kyoto University. These plentiful data enabled us to present this series of papers to discuss the entire processes of the observed phenomena including the energy storage, event trigger, and energy release. In this paper, we focus on the energy build-up and trigger phases, by analyzing the photospheric horizontal flow field around the active region with an optical flow method. The analysis reveals the following three. (i) The observed explosive phenomena involved three satellite spots, the magnetic fluxes of which successively reconnected with their pre-existing ambient fields. (ii) All of these satellite spots emerged in the moat region of a pivotal delta-type sunspot, especially near its convergent boundary with the neighboring supergranules or moat regions of adjacent sunspots. (iii) Around the jet ejection site, the positive polarities of satellite spot and adjacent emerging flux encountered the global magnetic field with negative polarity in the moat region of the pivotal delta-type sunspot, and thus the polarity inversion line was formed along the convergent boundary of the photospheric horizontal flow channels.
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