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arXiv 1707.04424gr-qc
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论广义相对论天体力学的基础

On the foundations of general relativistic celestial mechanics

Emmanuele Battista, Giampiero Esposito, Simone Dell'Agnello

摘要:

19世纪末,天体力学为检验牛顿引力在太阳系中的作用提供了最有力的工具,也导致了现代科学中混沌的发现。天体力学在广义相对论的指导下,为卫星和行星的运动提供了新的视角。读者在这里介绍了运动问题的现代表述,遵循该领域的领导者自90年代以来一直在教导的内容。特别是,使用一个全局图表的整体动态N机构和N个局部图表描述每个机构的内部动态。接下来的逻辑步骤详细研究了如何将N体问题分成关于内部和外部动力学的两个子问题,如何实现将允许两个子问题解耦的擦除属性,如何定义外部电势擦除坐标以及如何推广牛顿多极矩和潮汐矩。审查文件最后评估了在这样一个框架内获得的非局部运动方程,描述了由广义相对论对牛顿三体问题的理论分析引起的修改,并提到了利用行星星历方案对太阳系度量数据进行分析的潜力。

英文摘要:

Towards the end of nineteenth century, Celestial Mechanics provided the most powerful tools to test Newtonian gravity in the solar system, and led also to the discovery of chaos in modern science. Nowadays, in light of general relativity, Celestial Mechanics leads to a new perspective on the motion of satellites and planets. The reader is here introduced to the modern formulation of the problem of motion, following what the leaders in the field have been teaching since the nineties. In particular, the use of a global chart for the overall dynamics of N bodies and N local charts describing the internal dynamics of each body. The next logical step studies in detail how to split the N-body problem into two sub-problems concerning the internal and external dynamics, how to achieve the effacement properties that would allow a decoupling of the two sub-problems, how to define external-potential-effacing coordinates and how to generalize the Newtonian multipole and tidal moments. The review paper ends with an assessment of the nonlocal equations of motion obtained within such a framework, a description of the modifications induced by general relativity of the theoretical analysis of the Newtonian three-body problem, and a mention of the potentialities of the analysis of solar-system metric data carried out with the Planetary Ephemeris Program.

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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