论文标题
从随机重力波背景中推断Ligo-Virgo源的镜头速率
Inferring the lensing rate of LIGO-Virgo sources from the stochastic gravitational wave background
论文作者
论文摘要
对于远处的来源，重力波的强烈镜头更有可能，但预测事件速率高度不确定，并且提出了许多天体物理起源。在这里，我们通过探索随机引力波背景（SGWB）的幅度来开放新的途径，以估计强镜系统的事件速率。该方法可以在高红移二元合并速率上提供直接的上限，该速率可以将其转化为上限，以强透明系统的预期速率转化为上限。我们表明，从对激光干涉仪重力波观测站（LIGO） - VIRGO的持续分析以及将来，可以使用SGWB信号对镜头事件速率的Ligo-Virgo设计敏感性严格界定。将大声引力波事件的测量与未解决的随机背景检测相结合，将改善高红移时透镜事件数量的估计。所提出的方法将对从重力波观测中了解镜头和解释系统的群体至关重要。
Strong lensing of gravitational waves is more likely for distant sources but predicted event rates are highly uncertain with many astrophysical origins proposed. Here we open a new avenue to estimate the event rate of strongly lensed systems by exploring the amplitude of the stochastic gravitational wave background (SGWB). This method can provide a direct upper bound on the high redshift binary coalescing rates, which can be translated into an upper bound on the expected rate of strongly lensed systems. We show that from the ongoing analysis of the Laser Interferometer Gravitational-wave Observatory (LIGO)-Virgo and in the future from the LIGO-Virgo design sensitivity stringent bounds on the lensing event rate can be imposed using the SGWB signal. Combining measurements of loud gravitational wave events with an unresolved stochastic background detection will improve estimates of the numbers of lensed events at high redshift. The proposed method is going to play a crucial in understanding the population of lensed and unlensed systems from gravitational wave observations.
