标题： 太阳日冕 prominence 细结构驻 kinky 振荡的地震学 显示英文标题

标题： Seismology of Standing Kink Oscillations of Solar Prominence Fine Structures

摘要： 我们研究了日珥细结构中驻波型横磁流体力学（MHD）振荡，该细结构被建模为一个直的且圆柱形的磁管，其中部分填充了日珥物质，并且其两端固定在代表太阳光球层的两个刚性壁上。 日珥等离子体部分电离，在日珥细丝与日冕介质之间包含了一个横向不均匀的过渡层。因此，考虑的阻尼机制包括离子-中性粒子碰撞和共振吸收。 在细管和薄边界近似下，我们推导出了基模的周期、阻尼时间及其比值的近似解析表达式。 我们发现主导的阻尼机制是共振吸收，这提供了与观测一致的阻尼比，而离子-中性粒子碰撞对于阻尼无关紧要。阻尼比的数值与日珥细丝长度及其在磁管中的位置无关，并且与完全充满日珥等离子体的磁管的阻尼比相同。 讨论了我们的结果在MHD地震学技术背景下的意义，指出所报告的短周期（2 - 10分钟）和短波长（700 - 8,000公里）细丝振荡可能不符合驻波模式的解释，而是可能与传播波有关。 最后，我们展示了通过使用观测确定的振荡周期和阻尼时间值以及这些量的解析近似值，可以反演某些日珥物理参数，例如阿尔芬速度、磁场强度、横向不均匀性长度尺度等。 显示英文摘要

摘要： We investigate standing kink magnetohydrodynamic (MHD) oscillations in a prominence fine structure modeled as a straight and cylindrical magnetic tube only partially filled with the prominence material, and with its ends fixed at two rigid walls representing the solar photosphere. The prominence plasma is partially ionized and a transverse inhomogeneous transitional layer is included between the prominence thread and the coronal medium. Thus, ion-neutral collisions and resonant absorption are the considered damping mechanisms. Approximate analytical expressions of the period, the damping time, and their ratio are derived for the fundamental mode in the thin tube and thin boundary approximations. We find that the dominant damping mechanism is resonant absorption, which provides damping ratios in agreement with the observations, whereas ion-neutral collisions are irrelevant for the damping. The values of the damping ratio are independent of both the prominence thread length and its position within the magnetic tube, and coincide with the values for a tube fully filled with the prominence plasma. The implications of our results in the context of the MHD seismology technique are discussed, pointing out that the reported short-period (2 - 10 min) and short-wavelength (700 - 8,000 km) thread oscillations may not be consistent with a standing mode interpretation and could be related to propagating waves. Finally, we show that the inversion of some prominence physical parameters, e.g., Alfv\'en speed, magnetic field strength, transverse inhomogeneity length-scale, etc., is possible using observationally determined values of the period and damping time of the oscillations along with the analytical approximations of these quantities.