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arXiv 1402.5947gr-qcastro-ph.EPphysics.geo-phphysics.space-ph
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中心体扁率引起的后牛顿直接和混合轨道效应

Post-Newtonian direct and mixed orbital effects due to the oblateness of the central body

Lorenzo Iorio

摘要:

在旋转扁圆初级的非球对称场中运动的测试粒子的轨道动力学也受到某些间接的混合效应的影响,这些效应是由不同的牛顿加速度和后牛顿加速度的相互作用引起的,这些加速度引起已知的直接扰动。本文系统地计算了由于中心体的第一偶带谐函数$J_2$与后牛顿静止分量和静止分量的引力场相交而引起的试验粒子开普勒轨道根数的每轨道的间接引力电磁位移。我们还计算出了$J_2^2$阶轨道的牛顿位移,以及由运动方程产生的$J_2 c^{-2}$阶后牛顿引力电效应。在间接和直接的重电$J_2 c^{-2}$位移的情况下,我们的计算适用于中心体对称轴的任意取向。从地球人造卫星到围绕超大质量黑洞运行的恒星,我们对它们的相对大小进行了数值估计。

英文摘要:

The orbital dynamics of a test particle moving in the non-spherically symmetric field of a rotating oblate primary is impacted also by certain indirect, mixed effects arising from the interplay of the different Newtonian and post-Newtonian accelerations which induce known direct perturbations. We systematically calculate the indirect gravitoelectromagnetic shifts per orbit of the Keplerian orbital elements of the test particle arising from the crossing among the first even zonal harmonic $J_2$ of the central body and the post-Newtonian static and stationary components of its gravitational field. We also work out the Newtonian shifts per orbit of order $J_2^2$, and the direct post-Newtonian gravitoelectric effects of order $J_2 c^{-2}$ arising from the equations of motion. In the case of both the indirect and direct gravitoelectric $J_2 c^{-2}$ shifts, our calculation holds for an arbitrary orientation of the symmetry axis of the central body. We yield numerical estimates of their relative magnitudes for systems ranging from Earth artificial satellites to stars orbiting supermassive black holes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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