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arXiv 1305.0803astro-ph.EP
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旋转液体行星的同心Maclaurin球体模型

Concentric Maclaurin spheroid models of rotating liquid planets

W. B. Hubbard

摘要:

我提出了一个系统的N同心等密度(麦克劳林)球体的内部引力势V的精确表达式。我演示了一个迭代过程,找到一个自洽的解决方案的形状之间的接口球体,和内部的引力势。外部自由空间的潜力,表示为多极展开,出现作为自洽解决方案的一部分。该方法比微扰法更简单、更精确。人们可以选择同心球体的分布和质量密度,以便按照规定的精度再现规定的正压面。我证明了该方法的有效性,通过比较其结果与几个已发表的测试案例。

英文摘要:

I present exact expressions for the interior gravitational potential V of a system of N concentric constant-density (Maclaurin) spheroids. I demonstrate an iteration procedure to find a self-consistent solution for the shapes of the interfaces between spheroids, and for the interior gravitational potential. The external free-space potential, expressed as a multipole expansion, emerges as part of the self-consistent solution. The procedure is both simpler and more precise than perturbation methods. One can choose the distribution and mass densities of the concentric spheroids so as to reproduce a prescribed barotrope to a specified accuracy. I demonstrate the method's efficacy by comparing its results with several published test cases.

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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