论文标题
在新循环的第一个活动区域中振荡的多级观测
Multilevel Observations of the Oscillations in the First Active Region of the New Cycle
论文作者
论文摘要
从出生到衰减的太阳能面孔中的振荡动力学进行了多波动研究。我们在H $α$，HE I 10830 A和SI I 10827 A线上进行了Sayan太阳天文台的水平太阳能望远镜，对活动区域NOAA 12744进行了光谱观测。我们使用了太阳动力学天文台（SDO）视线线数据以及1600 A，304 A和171 A UV通道。在面板进化的早期阶段，我们观察到低频（1-2 MHz）的振荡集中在座的中心部分。在较低的太阳大气中，这是以强度，视线速度和磁场信号的注册。在过渡区和电晕（304 A和171 A通道）中也观察到了这些频率。在面板进化的最大发展阶段，低频振荡紧密地重现了在活性区域上方形成的冠状环结构。在衰减阶段，所观察到的频率的空间分布类似于在不受干扰的色球圈网络中发现的频率。我们的结果表明，在较低的太阳大气中观察到的低频振荡与冠状环中的振荡的直接关系，这可能是通过环路脚点实现的。
For the first time, a multi-wave research of oscillation dynamics in a solar facula from its birth to decay was carried out. We performed spectral observations of active region NOAA 12744 at Horizontal Solar Telescope of the Sayan Solar Observatory in the H$α$, He I 10830 A, and Si I 10827 A lines. We used Solar Dynamics Observatory (SDO) line-of-sight magnetic field data and the 1600 A, 304 A, and 171 A UV channels. At the early stages of the facula evolution, we observed low-frequency (1-2 mHz) oscillations concentrate in the central part of the facula. In the lower solar atmosphere, this is registered in the intensity, line-of-sight velocity, and magnetic field signals. These frequencies were also observed in the transition region and corona (304 A and 171 A channels). At the maximal development phase of the facula evolution, the low frequency oscillations closely reproduce the coronal loop structures forming above the active region. At the decay phase, the spatial distributions of the observed frequencies resemble those found in and above the undisturbed chromosphere network. Our results indicate a direct relation of the low frequency oscillations observed in the lower solar atmosphere with the oscillations in the coronal loops, which is probably implemented through the loop footpoints.
