论文标题
2011年6月7日的灯丝上升期间的无线电，EUV和X射线观测
Radio, EUV, and X-Ray Observations During a Filament Rise in the 2011 June 7 Solar Flare
论文作者
论文摘要
最有能量的耀斑从细丝上升开始，然后是低于此细丝的磁重新连接。重新连接的开始对应于火炬冲动阶段的开始。在本文中，我们在此阶段之前研究过程。在灯丝上升期间，我们认识到一个不寻常的无线电连续体，起始边界向较低的频率漂流。生成该连续边界的试剂的估计速度约为400 km/s，类似于升起的细丝的速度。随着灯丝的升高，瞬态X射线源和极端的Ultaviolet（EUV）亮丽在细丝脚步附近以及后来出现了两个平行的耀斑丝带的位置。此外，在无线电，EUV和X射线观测值中同时发现了约30秒钟的振荡。在这些振荡的末端末尾，闪光冲动相开始于观察到位于上升细丝上部的漂移脉动结构和X射线源的观察。我们将不寻常的无线电连续体和瞬态X射线源，它们位于两个平行的耀斑丝带之外，如在上升灯丝与上横磁回路的相互作用时产生的。灯丝脚点处的EUV亮度可能是带有灯丝的磁绳内磁重连接的标志。讨论了无线电，X射线和EUV中约30 s周期振荡的可能场景。
The most energetic flares start with a filament rise followed by magnetic reconnection below this filament. The start of the reconnection corresponds to the beginning of the flare impulsive phase. In this paper we study processes before this phase. During the filament rise we recognize an unusual radio continuum with a starting boundary drifting toward lower frequencies. The estimated velocity of the agent generating this continuum boundary is about 400 km/s, similar to that of the rising filament. In association with this filament rise, transient X-ray sources and extreme ultaviolet (EUV) brightenings are found near the filament footpoint and outside the locations where later two parallel flare ribbons appear. Moreover, oscillations with a ~30 s period are found simultaneously in radio, EUV, and X-ray observations. Around the end of these oscillations the flare impulsive phase starts as seen in observations of the drifting pulsation structure and X-ray source located at the upper part of the rising filament. We interpret the unusual radio continuum and transient X-ray sources, which are located outside the two parallel flare ribbons, as those generated during an interaction of the rising filament with the above-lying magnetic loops. The EUV brightening at the filament footpoint could be a signature of the magnetic reconnection inside the magnetic rope carrying the filament. Possible scenarios of the ~30 s period oscillations in radio, X-ray, and EUV are discussed.
