The Properties of the Tilts of Bipolar Solar Regions
The Properties of the Tilts of Bipolar Solar Regions
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双极太阳区倾斜的特性
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
D. Sokoloff
中科院分区：
文献类型：
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作者：
E. Illarionov;A. Tlatov;D. Sokoloff
我们调查的各种性质与孤立的磁偶极子在太阳表面采取的磁图倾斜。我们发现，双极可以分为两组，具有相反的符号倾斜，并揭示了类似的性质，相对于双极面积，通量和双极矩。这些物理量的详细比较表明，两种类型的两极之间的分界点对应于太阳半球约300百万分之一的两极面积。小偶极子的时纬分布与大偶极子的时纬分布有很大不同。根据发电机理论，这种行为可能表明，大小两极跟踪太阳磁场的不同分量。另一个可能的解释是，小和大的双极倾斜数据的差异与光谱螺旋度分离有关，这导致小和大的双极倾斜相反。我们注意到，现有数据并没有提供令人信服的理由来支持这两种解释。
We investigate various properties associated with the tilt of isolated magnetic bipoles in magnetograms taken at the solar surface. We show that bipoles can be divided into two groups that have tilts of opposite signs, and reveal similar properties with respect to bipole area, flux, and bipolar moment. Detailed comparison of these physical quantities shows that the dividing point between the two types of bipoles corresponds to a bipole area of about 300 millionths of the solar hemisphere. The time–latitude distribution of small bipoles differs substantially from that for large bipoles. Such a behaviour in terms of dynamo theory may indicate that small and large bipoles trace different components of the solar magnetic field. The other possible explanation is that the difference in tilt data for small and large bipoles is connected with spectral helicity separation, which results in opposite tilts for small and large bipoles. We note that the data available do not provide convincing reasons to prefer either interpretation.