MAGNETIC-RECONNECTION GENERATED SHOCK WAVES AS A DRIVER OF SOLAR SURGES
MAGNETIC-RECONNECTION GENERATED SHOCK WAVES AS A DRIVER OF SOLAR SURGES
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DOI：
10.1088/2041-8205/790/1/l4
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发表时间：
2014-07
期刊：
影响因子：
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通讯作者：
Heesu Yang;J. Chae;E. Lim;Kyoung-Sun Lee;Hyungmin Park;D. Song;Kyuhyoun Cho
中科院分区：
文献类型：
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作者：
Heesu Yang;J. Chae;E. Lim;Kyoung-Sun Lee;Hyungmin Park;D. Song;Kyuhyoun Cho
我们发现，浪涌由多个冲击功能。在我们对浪涌的高时空光谱观测中，每一个冲击都被识别为在Ca ii 8542的蓝翼处突然出现的吸收特征，以及Hα线逐渐转移到红翼。地震特征相互重叠的时间间隔为110 s，远短于每个地震特征的持续时间（300-400 s）。这一发现表明，多重冲击可能不是起源于光球层中的振荡和流动产生的一系列正弦波。由于我们在浪涌底部发现了磁通量抵消的签名，我们得出结论，负责浪涌的多个冲击波是由低层大气中发生的与磁通量抵消相关的磁重联产生的。
We found that a surge consists of multiple shock features. In our high-spatiotemporal spectroscopic observation of the surge, each shock is identified with the sudden appearance of an absorption feature at the blue wings of the Ca ii 8542 Å line and Hα line that gradually shifts to the red wings. The shock features overlap with one another with the time interval of 110 s, which is much shorter than the duration of each shock feature, 300–400 s. This finding suggests that the multiple shocks might not have originated from a train of sinusoidal waves generated by oscillations and flows in the photosphere. As we found the signature of the magnetic flux cancelations at the base of the surge, we conclude that the multiple shock waves in charge of the surge were generated by the magnetic reconnection that occurred in the low atmosphere in association with the flux cancelation.