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Distribution of tensor anisotropy of cosmic rays near the neutral current sheet

机译：中性电流层附近宇宙射线的张量各向异性分布

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We analyze time profiles of isotropic intensity, components of vector and tensor anisotropies of cos-mic rays (CR) when Earth crosses the neutral sheet of the interplanetary magnetic field (IMF) in solar activity cycles 23–24. The moments of the crossings are de-termined from Wilcox Observatory synoptic charts and IMF data. Periods of Forbush decreases and ground level enhancements are excluded from the analysis. The events are analyzed for the epochs of positive and negative signs of the Sun’s general magnetic field. During each epoch, the crossings from the positive sector to the negative one and vice versa are separated. In total, 213 crossing events have been selected. The first two spherical harmonics of the angular CR-distribution are obtained using the global survey method. In each case, the average number of stations is equal to 32. The analysis shows that the temporal change of the isotropic component is caused by a magnetic mirror. For the first time, the zonal harmonics are reliably distinguished, and the existence of the antisymmetric diurnal CR-variation in a low energy range, which is oriented along IMF, is recognized. We compare our results with those obtained earlier.
机译：我们分析了在太阳活动周期23–24中地球越过行星际磁场（IMF）的中性片时各向同性强度，矢量分量和张量各向异性的时间分布。穿越时刻由威尔科克斯天文台天气图表和IMF数据确定。分析中不包括Forbush的时段减少和地面增强的时段。对这些事件进行了分析，以了解太阳一般磁场的正负时期。在每个时期，从正扇区到负扇区的相交是分开的，反之亦然。总共选择了213个穿越事件。使用全局测量方法获得角CR分布的前两个球谐函数。在每种情况下，平均站数等于32。分析表明，各向同性分量的时间变化是由磁镜引起的。首次可靠地区分了区域谐波，并认识到在低能量范围内（沿IMF定向）反对称昼夜CR变化的存在。我们将我们的结果与之前获得的结果进行比较。

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