摘要
本文用喷流模型计算SS433短周期变化的周期和振幅值。讨论短周期变化叠加成拍的条件。用此条件判断,很自然地得出:在短周期变化中可能存在拍现象。对于喷流模型,在一个进动周期内其拍频为2。 文中还利用了Margon,B·等人的SS433多普勒频移图作SS433多普勒频移的残差分布图。在分布图中,某些进动周期内显示出分布轮廓有双峰结构,分析产生双峰的原因,正是与章动有关的、短周期变化中的拍现象。因此,在SS433的163天多普勒频移图上,观测点始终存在10％的弥散,乃是163天进动曲线与不能消除的短周期中的拍叠加的结果。 这样,本文从理论和实测分析上都证认了SS433短周期变化中存在拍现象的可能性。
In this paper, values of the periods and amplitudes of the short period variations of SS433 have been calculated using a jet model. The conditions of beats, occur when these short periods variation superpose one another, have been discussed. Using this conditions, we can naturally obtain the following conclusions: It is possible for the beats to exist in short period variations. For the jet model, the number of beats per precessional period is 2.The distributions of the residuals of SS433 Doppler shifts have been drawn utilizing Maggon et al.'s Doppler shifts of SS433. In the distributions the contour of residuals reveals a double-peak construction in some precessional periods. Analyzing this double-peak construction, it is the beat phenomena in short period variat ions whch have a close relation with the nutation.
