论文标题
光球磁场极性的循环变化
Cyclic changes of the photospheric magnetic field polarity
论文作者
论文摘要
研究了太阳表面上正极和负极性的磁场的分布。使用光球磁场的概要图（NSO Kitt Peak，1978--2016）进行分析。在弱磁场（$ b \ leq 5 g $）的时间纬度图中，清晰可见倾斜的带，表明具有正极或负极性的磁场的交替优势向太阳的杆子移动。使用经验正交函数方法（EOF）对时纬度图进行分析，使在1 - 3年的磁场流量的极性上建立环状变化是可能的，这表明与准两年差异有可能联系。通过在时纬度图的纬度上平均获得相似的时期值
The distribution of magnetic fields of positive and negative polarities over the surface of the Sun was studied. Synoptic maps of the photospheric magnetic field (NSO Kitt Peak, 1978--2016) were used for the analysis. In the time-latitude diagram for weak magnetic fields ($B \leq 5 G$), inclined bands are clearly visible, indicating the alternating dominance of magnetic fields with positive or negative polarity drifting towards the poles of the Sun. Analysis of the time-latitude diagram using the method of empirical orthogonal functions (EOF) made it possible to establish a cyclic change in the polarity of magnetic field flows with a period of 1-3 years, which indicates a possible connection with quasi biennial variation. Similar period values are obtained by averaging over the latitude of the time-latitude diagram
