日冕季风：由周期性日冕雨揭示的热不平衡
太阳与恒星天体物理
2018-02-21 v1
摘要
我们报道在临边序列的 {\it Solar Dynamics Observatory}/Atmospheric Imaging Assembly 图像中发现周期性日冕雨。这些阵雨与 Auchere 等人（2014）以及 Froment 等人（2015, 2017）所描述的日冕环的周期性（6.6~hr）强度脉动共空间且同相。这些新观测使得对两种现象的统一描述成为可能。日冕雨与环的周期性强度脉动是同一物理过程的两个表现：由热不平衡（TNE）状态导致的蒸发/凝聚循环。在日冕温度附近的涨落产生环的强度脉动，而如果热失控将周期性凝聚体冷却至过渡区（TR）温度及以下，则雨沿其腿下落。该情景与准稳态且足点加热环的数值模型预言一致。在所研究视场中若干其他结构里存在日冕雨——尽管非周期——意味着此类加热在大尺度上起作用。
引用
@article{arxiv.1802.01852,
title = {The Coronal Monsoon: Thermal Nonequilibrium Revealed by Periodic Coronal Rain},
author = {F. Auchère and C. froment and E. Soubrié and P. Antolin and R. Oliver and G. Pelouze},
journal= {arXiv preprint arXiv:1802.01852},
year = {2018}
}
备注
By mistake, this article was originally submitted as a replacement (version v4) of arXiv:1608.03789. This latter was then replaced with a correct v5 (identical to v3) The present paper was then properly submitted as a new submission (this version)