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arXiv 1706.02791gr-qc
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黑洞对点粒子的散射:引力辐射

Scattering of point particles by black holes: gravitational radiation

Seth Hopper, Vitor Cardoso

摘要:

引力波不仅可以告诉我们引力波的来源和产生环境,还可以告诉我们引力相互作用本身。本文研究了黑洞散射点状质量时产生的引力辐射的特征。我们的结果是准确的(数值误差)在任何顺序的速度展开,并与各种近似。在大的碰撞参量和相对小的速度下,我们的结果与各种后牛顿和弱场结果在百分之一水平内一致。此外,我们发现在弱场/高能量制度的标度预测很好的协议。最后,我们实现了惊人的协议与零频率估计。

英文摘要:

Gravitational waves can teach us not only about sources and the environment where they were generated, but also about the gravitational interaction itself. Here we study the features of gravitational radiation produced during the scattering of a point-like mass by a black hole. Our results are exact (to numerical error) at any order in a velocity expansion, and are compared against various approximations. At large impact parameter and relatively small velocities our results agree to within percent level with various post-Newtonian and weak-field results. Further, we find good agreement with scaling predictions in the weak-field/high-energy regime. Lastly, we achieve striking agreement with zero-frequency estimates.

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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