螺旋形行星际磁场：极性和太阳黑子周期变化。
The spiral interplanetary magnetic field: a polarity and sunspot cycle variation.
出版信息
Science. 1974 Oct 4;186(4158):51-3. doi: 10.1126/science.186.4158.51.
PMID:17818100
Abstract
Spacecraft observations near the earth of the average direction of the interplanetary magnetic field during the sunspot maximum year 1968 showed a deviation from the spiral field of Parker's classical description. The included angle between the average field direction when the field polarity was away from the sun and the average direction when the field polarity was toward the sun was 168 degrees , rather than 180 degrees as predicted by Parker. This effect appears to have a sunspot cycle variation.
摘要
航天器在 1968 年太阳活动极大期对地球附近行星际磁场平均方向的观测显示，其偏离了帕克经典描述的螺旋场。当磁场极性指向太阳时的平均磁场方向与当磁场极性背离太阳时的平均磁场方向之间的夹角为 168 度，而不是帕克所预测的 180 度。这种效应似乎存在太阳黑子周期变化。
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