由不可见的极紫外波触发的闪烁（振荡）细丝链
A Chain of Winking (Oscillating) Filaments Triggered by an Invisible Extreme-Ultraviolet Wave
摘要：
闪烁（振荡）细丝已经观察了很多年。然而，在一个事件中观察到连续闪烁的细丝还没有报道。在本文中，我们提出了一个闪烁的细丝链和随后的喷流，观察后，在AR 11283的X2.1是。该事件还产生了极紫外（EUV）波，它有两个组成部分：向上的圆顶状波（850 km/s）和侧表面波（554 km/s），这在成像观测中非常微弱（或不可见）。通过分析振荡细丝和极紫外波之间的时间和空间关系，我们提出所有闪烁细丝和射流都是由微弱（或不可见）的侧表面极紫外波触发的。暗条的振荡持续2 ~ 3个周期，周期为11 ~ 22 min，多普勒速度幅值为6 ~ 14 km/s，阻尼时间为25 ~ 60 min。我们进一步估算了暗条的径向磁场和最大动能，它们分别为5 ~ 10高斯和~ 10^19 J。最大动能与普通极紫外波的最小能量相当，表明极紫外波可以有效地在其路径上发射暗条振荡，因此极紫外波是触发和连接太阳大气中连续但分离的太阳活动的良好媒介，也是产生太阳交感爆发的重要因素.
英文摘要：
Winking (oscillating) filaments have been observed for many years. However, observations of successive winking filaments in one event have not been reported yet. In this paper, we present the observations of a chain of winking filaments and a subsequent jet that are observed right after the X2.1 are in AR11283. The event also produced an Extreme-ultraviolet (EUV) wave that has two components: upward dome-like wave (850 km/s) and lateral surface wave (554 km/s) which was very weak (or invisible) in imaging observations. By analyzing the temporal and spatial relationships between the oscillating filaments and the EUV waves, we propose that all the winking filaments and the jet were triggered by the weak (or invisible) lateral surface EUV wave. The oscillation of the filaments last for two or three cycles, and their periods, Doppler velocity amplitudes, and damping times are 11 - 22 minutes, 6 - 14 km/s, and 25 - 60 minutes, respectively. We further estimate the radial component magnetic field and the maximum kinetic energy of the filaments, and they are 5 - 10 Gauss and ~ 10^19 J, respectively. The estimated maximum kinetic energy is comparable to the minimum energy of ordinary EUV waves, suggesting that EUV waves can efficiently launch filament oscillations on their path. Based on our analysis results, we conclude that the EUV wave is a good agent for triggering and connecting successive but separated solar activities in the solar atmosphere, and it is also important for producing solar sympathetic eruptions.
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