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arXiv 1010.2114gr-qc
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定常球对称时空中开普勒轨道的扰动

Perturbations of Keplerian Orbits in Stationary Spherically Symmetric Spacetimes

Matteo Luca Ruggiero

摘要:

研究了在广义相对论中由引力替代理论确定的对中心质量的引力场的球对称扰动。特别是,我们专注于摄动的形式的幂律和计算它们的长期变化的开普勒轨道的轨道要素的影响。结果表明,在最低近似阶下,只有近心辐角和平均距平发生长期变化,并计算了轨道周期的变化。我们给出了这些变化的解析表达式,这些变化可以用来约束引力的替代理论的影响。

英文摘要:

We study spherically symmetric perturbations determined by alternative theories of gravity to the gravitational field of a central mass in General Relativity. In particular, we focus on perturbations in the form of power laws and calculate their effect on the secular variations of the orbital elements of a Keplerian orbit. We show that, to lowest approximation order, only the argument of pericentre and mean anomaly undergo secular variations; furthermore, we calculate the variation of the orbital period. We give analytic expressions for these variations which can be used to constrain the impact of alternative theories of gravity.

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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