论文标题
重力合并的镜头效率
Lensing efficiency for gravitational wave mergers
论文作者
论文摘要
我们深入了解重力镜头对通过重力波观察到的合并二进制组的估计分布的影响。我们在几何光学限制中量化了重力波事件的放大效率，并通过对源总数的内在特性分布进行最小化假设来比较它与电磁案例的效率。我们表明，镜头效应在观察到的速率上留下了可识别的签名，并且只有在存在极度陡峭的质量功能（或红移演化）的情况下，它们才能突出，并且主要在低推断的红移。我们得出的结论是，在Ligo-Virgo时代，重力放大并不代表重力波合并研究的重要系统。
We gain insight into the effects of gravitational lensing on the estimated distribution of merging binaries observed through gravitational waves. We quantify the efficiency of magnification for gravitational wave events in the geometric optics limit, and we compare it to the electromagnetic case by making minimal assumptions about the distribution of intrinsic properties for the source population. We show that lensing effects leave a recognizable signature on the observed rates, and that they can be prominent only in the presence of an extremely steep mass function (or redshift evolution) and mainly at low inferred redshifts. We conclude that gravitational magnification does not represent a significant systematic for gravitational wave merger studies in the LIGO-Virgo era.
