论文标题
在古德太阳能望远镜上观察到的II型Spicules的快速演变H-Alpha图像
Rapid Evolution of Type II Spicules Observed in Goode Solar Telescope On-Disk H-alpha Images
论文作者
论文摘要
我们使用在Big Bear Solar天文台运行的Goode Solar Telescope（GST），分析了以2 s的高度节奏在H $α$频谱线的翅膀中获得的基于地面的色球数据。我们检查了30分钟的H $α$ -0.08〜nm数据集，以发现快速蓝换H $α$偏移（RBE），它们是II型Spicules的一个很酷的组成部分，在1秒的时间尺度的时间尺度上经历了非常快速的形态变化。与典型的重新连接喷气机不同，RBE经常出现\ textit {intu {intu}，而没有任何明确的证据表明从下方注入h $α$的材料。它们的进化包括倒置的“ y”，“ v”，“ n”，以及平行的分裂（加倍）模式以及弥漫性区域的突然形成，然后分支。我们还发现，相同的功能可能会在大约1分钟的时间间隔内进行几次分裂发作。
We analyze ground-based chromospheric data acquired at a high temporal cadence of 2 s in wings of the H$α$ spectral line using Goode Solar Telescope (GST) operating at the Big Bear Solar Observatory. We inspected a 30 minute long H$α$-0.08~nm data set to find that rapid blue-shifted H$α$ excursions (RBEs), which are a cool component of type II spicules, experience very rapid morphological changes on the time scales of the order of 1 second. Unlike typical reconnection jets, RBEs very frequently appear \textit{in situ} without any clear evidence of H$α$ material being injected from below. Their evolution includes inverted "Y", "V", "N", and parallel splitting (doubling) patterns as well as sudden formation of a diffuse region followed by branching. We also find that the same feature may undergo several splitting episodes within about 1 min time interval.
