论文标题
在下部太阳大气中表面磁场的相互作用期间冲动性冠状加热
Impulsive coronal heating during the interaction of surface magnetic fields in the lower solar atmosphere
论文作者
论文摘要
太阳活性区域核心中的冠状血浆冲动加热至超过5 mk。众所周知，负责这种冲动加热的磁能源的性质和位置。利用对太阳能动力学观测站的七个活跃区域的观测，我们发现，托有热等离子体的大多数冠状环具有至少一个脚步，该脚点根源于在太阳能表面上相互作用的混合磁性极性区域。如果可以从界面区域成像光谱仪空间任务中进行同时观察，我们发现了在热冠状环基底部进行磁重新连接的光谱证据。我们的分析表明，在太阳能表面上具有相反极性的磁斑的相互作用以及重新连接期间相关的能量释放是冲动性冠状加热的关键。
Coronal plasma in the cores of solar active regions is impulsively heated to more than 5 MK. The nature and location of the magnetic energy source responsible for such impulsive heating is poorly understood. Using observations of seven active regions from the Solar Dynamics Observatory, we found that a majority of coronal loops hosting hot plasma have at least one footpoint rooted in regions of interacting mixed magnetic polarity at the solar surface. In cases when co-temporal observations from the Interface Region Imaging Spectrograph space mission are available, we found spectroscopic evidence for magnetic reconnection at the base of the hot coronal loops. Our analysis suggests that interactions of magnetic patches of opposite polarity at the solar surface and the associated energy release during reconnection are key to impulsive coronal heating.
