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arXiv 0811.1478gr-qcastro-ph
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后牛顿光场中的广义相对论转动曲线

General Relativistic Rotation Curves in a Post-Newtonian Light

Aleksandar Rakic, Dominik J. Schwarz

摘要:

在观测到的星系自转曲线中开普勒衰减的缺失代表了星系尺度上暗物质存在的经典证据。最近有一些活动是关于在广义相对论的帮助下模拟银河系的潜力。这是因为有人声称,通过充分利用广义相对论,暗物质可以变得多余。在这里,我们专注于可能的轴对称和固定的解决方案,爱因斯坦方程与旋转尘埃。在简短回顾了目前的争论之后,我们继续探讨用牛顿语言来处理这种相对论模型的想法。我们分析刚性以及差分旋转的牛顿时空和后牛顿时空,发现有必要纳入一个后牛顿项,以使物理意义。

英文摘要:

The missing of a Keplerian fall-off in the observed galaxy rotation curves represents classical evidence for the existence of dark matter on galactic scales. There has been some recent activity concerning the potential of modelling galactic systems with the help of general relativity. This was motivated by claims that by the use of full general relativity dark matter could be made superfluous. Here we focus on possible axisymmetric and stationary solutions of Einstein's equations with rotating dust. After a short review of the current debate we pursue the idea of approaching such relativistic models in a Newtonian language. We analyse rigidly as well as differentially rotating Newtonian and Post-Newtonian spacetimes and find that it is necessary to incorporate a Post-Newtonian term in order to make physical sense.

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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