双星系中两子星的自转对双星轨道变化的后牛顿效应

本文利用解摄动方程的平均值法求得在PPN框架中二体自转对轨道要素产生的后牛顿效应的长期变化影响．利用这一理论对CWCep和DRVul两颗双星中两子星的自转对轨道近星点和平近点角的长期摄动的后牛顿效应做了计算。结果表明：对于两个质量较大快速自转的子星，由此所产生的后牛顿效应的摄动量是不能忽视的。

The Post-Newtonian Effect of the Rotation of Two Components on the Secular Variation of the Orbital Elements of the Component in Binary System

The post-Newtonian effect of the rotation of two bodies on the secular variation of theorbital elements in PPN is obtained by solving lagrange perturbation equations via the average value method. The theory is applied to the calculation for the post-Newtonian effectof the rotation of two components on the secular variations of longitude of periastron andmean anomaly. The results show that the post-Newtonian effect caused by the two rapidrotating massive components is not negligible.