太阳物理中磁螺度研究进展

Progress in the Magnetic Helicity Studies in Solar Physics

简要回顾了螺度引入太阳磁场研究中的历史过程,从物理角度讨论了相对磁螺度这个新的可 观测量,并指出其在理论和观测中存在的问题;着重介绍了磁螺度在太阳大气中的分配问题;探讨 了磁螺度和电流螺度的差别与联系、螺度半球手征性;列举介绍了磁螺度和其他太阳活动的联系, 尤其是太阳爆发事件中的磁螺度问题;指出磁螺度理论中几个还没有解决的问题及今后可能取得 进展的方向。

This paper reviews the history of magnetic helicity studies and its concepts introduced into solar physics. With the physical discussions on a new measurable quantity (relative magnetic helicity), some problems in both theory and observations are pointed out. The balance of magnetic helicity attracts much attention during recent helicity research, which is discussed in detail in Section 2. Both the relationship between magnetic and current helicity, and research progress in helicity's hemispheric chirality are briefly discussed. This paper summarizes the role of helicity in some solar activities, keeping an eye on the restrictive effect of helicity in solar explosive events. Some unresolved problems and highlights are also drawn.