Solar small-scale dynamo and polarity of sunspot groups
Solar small-scale dynamo and polarity of sunspot groups
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太阳小型发电机和太阳黑子群的极性
DOI：
10.1093/mnras/stv1036
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发表时间：
2015
影响因子：
4.8
通讯作者：
V. Abramenko
中科院分区：
文献类型：
--
作者：
Dmitry Sokoloff;A. Khlystova;V. Abramenko
为了阐明小型发电机在太阳磁场形成中的可能作用，我们提出了一种基于反黑尔黑子群统计的小型发电机作用的观测检验。正如我们已经表明的，根据理论上的期望，小规模发电机的作用必须提供一个不遵循黑尔极性定律的太阳黑子群的种群，并且这种群在时间-纬度图上的密度预计与太阳周期的阶段无关。相应地，在太阳活动极小期，反黑尔群的百分比预计将达到最大值。对于几个太阳周期，我们考虑了包括我们在内的几个科学团队获得的反黑尔群的统计数据，发现在太阳活动极小期，反黑尔群的百分比确实是最大的。我们的解释是，这一事实可以用太阳对流区内的小规模发电机作用来解释。
In order to clarify a possible role of small-scale dynamo in formation of solar magnetic eld, we suggest an observational test for small-scale dynamo action based on statistics of anti-Hale sunspot groups. As we have shown, according to theoretical expectations the small-scale dynamo action has to provide a population of sunspot groups which do not follow the Hale polarity law, and the density of such groups on the time-latitude diagram is expected to be independent on the phase of the solar cycle. Correspondingly, a percentage of the anti-Hale groups is expected to reach its maximum values during solar minima. For several solar cycles, we considered statistics of anti-Hale groups obtained by several scientic teams, including ours, to nd that the percentage of anti-Hale groups becomes indeed maximal during a solar minimum. Our interpretation is that this fact may be explained by the small-scale dynamo action inside the solar convective zone.