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arXiv 2107.02443gr-qcastro-ph.CO
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引力透镜引起的引力波畸变方差之间的普适关系

Universal relation between the variances of distortions of gravitational waves owing to gravitational lensing

Makoto Inamori, Teruaki Suyama

摘要:

来自远距离源的引力波在到达探测器之前,在穿过中间物质不均匀性的传播过程中受到引力透镜的作用。在文献中已经提出,透镜波形的方差可以用来提取在非常小的尺度和低质量的暗晕的物质功率谱的信息。在本文中,我们表明,振幅起伏的方差和相位起伏的透镜波形服从一个简单的关系,而不管的物质功率谱的形状。我们研究的条件下,这种关系可以被违反,并讨论了一些潜在的应用关系。这种关系可以用来证实观测到的引力波的引力透镜的可靠性以及随后的物质功率谱重建。

英文摘要:

Gravitational waves from the distant sources are gravitationally lensed during their propagation through the intervening matter inhomogeneities before arriving at detectors. It has been proposed in the literature that the variance of the lensed waveform can be used to extract information of the matter power spectrum at very small scales and of low-mass dark halos. In this paper, we show that the variance of the amplitude fluctuation and that of the phase fluctuation of the lensed waveform obey a simple relation irrespective of the shape of the matter power spectrum. We study conditions under which this relation can be violated and discuss some potential applications of the relation. This relation may be used to confirm the robustness of claimed observations of gravitational lensing of gravitational waves and the subsequent reconstruction of the matter power spectrum.

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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