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北美退伍军人节(Veterans Day),12 日无更新
arXiv 2202.12415gr-qc
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轴对称时空中测地线运动的全部解析解

All analytic solutions for geodesic motion in axially symmetric space-times

J. Ospino, J. L. Hernandez-Pastora, L. A. Nunez

摘要:

最近对Sgr $A^\star$周围星团轨道的观测、对黑洞的成像以及合并致密天体的引力波形都需要对广义相对论测地线运动有详细的了解。我们提出了一种方法,可以提供轴对称时空中所有可能的测地线。克尔度规的明确制定,恢复史瓦西测地线在静态极限。我们还发现了轴对称时空中最普遍的Killing张量及其相关的运动常数。这些结果的相关性对于理解不同的场景和银河系中心致密物体的基本性质至关重要。

英文摘要:

Recent observations of the orbits of star clusters around Sgr $A^\star$, imaging of black holes and gravitational waveforms of merging compact objects require a detailed understanding of the general relativistic geodesic motion. We came up with a method to provide all the possible geodesics in an axially symmetric space-time. The Kerr metric is explicitly worked out, recovering the Schwarzschild geodesics in the static limit. We also found the most general Killing tensor and its associated constant of motion for an axisymmetric space-time. The relevance of these results is crucial to understanding the different scenarios and the fundamental nature of the compact object at the galactic center.

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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