论文标题
来自非轴对称太阳能发电机的磁螺旋密度模式
The magnetic helicity density patterns from non-axisymmetric solar dynamo
论文作者
论文摘要
在论文中，我们研究了新兴的双极区域可能导致的螺旋密度模式。使用相关的发电机模型和磁性螺旋性保护定律，我们发现双极区域周围的螺旋密度模式取决于环境大规模磁场的配置，并且通常显示四极分布。该模式相对于赤道的位置可以取决于双极区域的倾斜。我们计算螺旋密度演化的时纬度图。双极区域的纵向平均效应显示了每个半球密度分布的两个符号。相似的螺旋密度模式是由受到表面差异旋转的新兴双极区域的螺旋密度通量提供的。检查双极区域的螺旋通量对大规模发电机的影响，我们发现其对发电机饱和的影响可以忽略不计。
In the paper we study the helicity density patterns which can result from the emerging bipolar regions. Using the relevant dynamo model and the magnetic helicity conservation law we find that the helicity density pattern around the bipolar regions depends on the configuration of the ambient large-scale magnetic field, and in general they show the quadrupole distribution. The position of this pattern relative to the equator can depend on the tilt of the bipolar region. We compute the time-latitude diagrams of the helicity density evolution. The longitudinally averaged effect of the bipolar regions show two bands of sign for the density distribution in each hemisphere. Similar helicity density patterns are provided by the helicity density flux from the emerging bipolar regions subjected to the surface differential rotation. Examining effect of helicity fluxes from the bipolar regions on the large-scale dynamo we find that its effect to the dynamo saturation is negligible.
