CM天体引力场中试验粒子测地线方程的后牛顿算法

从后牛顿展开形式的度规张量出发,采用后牛顿近似方法讨论了具有磁荷和磁矩(CM)天体引力场中试验粒子的测地线方程,当略去磁矩和磁荷部分的影响时,方程回到Schwarzschild场的测地线方程。这套方程对于研究试验粒子轨道的长期演变对星系演化的影响有重要意义。

Using the Post-Newtonian approximation method to calculate the geodesic equationsof a test particle in the gravitational field of a CM celestial body

The Post-Newton approximation method is adopted to discuss the geodesic equations of a test particle in the gravitation-al field of a CM celestial body from the Post-Newtonian metric tensor.When the parts of the magnetic charge and the magnetic mo-ment are neglected, those equations transform into the equations obtained in the Schwarzschild gravitational field.Those equations have very important meanings in the research of the influence of long-period orbital variation on the evolution of star galaxies.