I型彗尾风差角的分析及其所显示的太阳风的传播特性

文章分析了I型彗尾风差角的大量资料, 得出其变化和日心距离的关系是不大的;但对日心黄纬, 却显示出逐渐减小的趋向.文章还得出, 风差角的变化随着彗星的切向速度而单调上升, 从而进一步证实了动力风差原理是形成风差角的主要因素.在此基础上, 分析了太阳风速度场的分布特性, 得出了平均太阳风速度随日心距离的变化是不明显的, 而随日心黄纬有着缓慢增强的趋势. 

A STATISTICAL ANALYSIS ON THE ABERRATION ANGLES OF I TYPE COMETS AS WELL AS THE FEATURES OF SOLAR WIND PRESENTED BY THE ANALYSIS

In this paper, it is shown that the aberration angles of Itype cometary tails do not have a clear change with the heliocentric distance, but they have a slow change with the solar latitude. It is also shown that the change of aberration angles with the tangential velocity of comets can be expressed by a monotonic, ascendant, relevant curve. Thus, it is further tested and verified that the dynamical aberration mechanism is a main reason for the formation of aberration angles.In addition, a further analysis by which the features of the velocity field of solar winds are discussed is presented. It is pointed out that the correlation of the average velocity of the solar wind with the heliocentric distance is weak, but the average velocity correlates to the solar latitude. Atrend which shows that the average velocity of solar winds strengthens slowly with the solar latitude is given in the paper.