Recurrent flare/CME events from an emerging flux region
Recurrent flare/CME events from an emerging flux region
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DOI：
10.1029/2001gl013261
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发表时间：
2001-10
影响因子：
5.2
通讯作者：
N. Nitta;H. Hudson
中科院分区：
文献类型：
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作者：
N. Nitta;H. Hudson
我们报告了六个周期性的“晕”日冕物质抛射（CME），发生在（2000年11月）在60小时的时间内，与太阳盘上活动区域的主要耀斑明显相关。由于磁通量的出现，该区域正在经历动态的结构调整。就软X射线光变曲线和形态而言，耀斑不是长衰变事件（LDE），尽管在脉冲阶段，它们在软X射线中产生了CME特征的喷射。在这些耀斑之前，我们没有检测到EUV和X射线全磁盘图像的全局变化。我们认为，新兴的磁通量的核心活动区可能是负责发生这种重复耀斑/CME事件。
We report on six recurrent ‘halo' coronal mass ejections (CMEs) that occurred (in November 2000) during a 60‐hour period in clear association with major flares in an active region on the solar disk. The region was undergoing dynamic restructuring due to flux emergence. The flares were not long‐decay events (LDEs) in terms of soft X‐ray light curves and morphologies, although, in the impulsive phase, they produced ejections in soft X‐rays that are characteristic of CMEs. We do not detect global changes in EUV and X‐ray full‐disk images prior to these flares. We suggest that emerging magnetic flux in the core of an active region may be responsible for the occurrence of such repeated flare/CME events.