论文标题
通过暗物质结构对重力波的微卷
Microlensing of gravitational waves by dark matter structures
论文作者
论文摘要
重力波的重力镜头提供了潜在的暗物质结构的新探针。在这项工作中，我们考虑了由低质量暗物质光晕引起的黑洞二进制物的重力波信号的微透镜作用，这些光晕诱导，这些光晕诱导，这些光晕并没有保留足够的重型重质物质以容纳恒星。我们系统地阐明了这种微透明效果相关并通过未来的引力波观测器详细研究其可检测性。我们认为通过冷暗物质光环和孤子核心的镜头，这些核心位于模糊的暗物质光环中。我们的结果表明，尽管可以在相对较大的冲击参数下检测到效果，但检测到此类镜头事件的可能性很低。特别是，我们发现，Cold Dark Matter Halos镜头镜头的预期事件是BBO的$ O（0.01）$，而模糊暗物质Halos内部的孤子核心镜头的预期事件数为$ O（0.01）$（0.01）$（0.01）$。如果很大一部分暗物质由$ = o（100 m_ \ odot）$相对紧凑，$ r <o（0.1 \，{\ rm pc}）$组成，我们表明，每年预期的镜头事件数量可以是非常大的ET，$ 0（1000）$。
Gravitational lensing of gravitational waves provides a potential new probe of dark matter structures. In this work, we consider the microlensing effect on gravitational wave signals from black hole binaries induced by low-mass dark matter halos that do not retain enough baryonic matter to hold stars. We clarify systematically when this microlensing effect is relevant and study in detail its detectability by future gravitational wave observatories. We consider lensing by cold dark matter halos and by solitonic cores that reside in fuzzy dark matter halos. Our results show that although the effect can be detectable at relatively large impact parameters, the probability of detecting such lensed events is low. In particular, we find that the expected number of events lensed by cold dark matter halos is $O(0.01)$ per year for BBO and the expected number of events lensed by solitonic cores inside fuzzy dark matter halos is $O(0.01)$ per year for ET. In the case that a significant fraction of dark matter consists of $=O(100 M_\odot)$ objects that are relatively compact, $R < O(0.1\,{\rm pc})$, we show that the expected number of lensed events per year ET can be very large, $0(1000)$.
