论文标题
通过强重力透镜放大引力波的振幅和相波
Amplitude and phase fluctuations of gravitational waves magnified by strong gravitational lensing
论文作者
论文摘要
我们讨论菲涅耳尺度上的小尺度密度扰动如何影响重力波的幅度和相位，这些幅度通过几何光学元件的重力透镜而放大。我们得出了将小尺度密度扰动与振幅和相位波动联系起来的方程式，以表明在存在宏观模型大型化的存在下，可以很容易地观察到高度放大的重力波的振幅和相位波动，从而显着增强这种扰动波光学效应。我们讨论了由于恒星，暗物质子结构，模糊的暗物质和原始黑洞的微透明而引起的预期信号。
We discuss how small-scale density perturbations on the Fresnel scale affect amplitudes and phases of gravitational waves that are magnified by gravitational lensing in geometric optics. We derive equations that connect the small-scale density perturbations with the amplitude and phase fluctuations to show that such perturbative wave optics effects are significantly boosted in the presence of macro model magnifications such that amplitude and phase fluctuations can easily be observed for highly magnified gravitational waves. We discuss expected signals due to microlensing by stars, dark matter substructure, fuzzy dark matter, and primordial black holes.
