Calibrated solar S-index time series

The most commonly used index of stellar magnetic activity is the instrumental flux scale of singly ionized calcium H & K line core emission, S, developed by the Mount Wilson...恒星磁活动最常用的指标为由威尔逊山天文台（Mount Wilson）提出的单电离钙H与K谱线核心辐射的仪器通量标度S