论文标题
用爱因斯坦望远镜检测到的重力波条探测紧凑的暗物质
Probing compact dark matter with gravitational wave fringes detected by the Einstein Telescope
论文作者
论文摘要
与天体物理物体的电磁辐射不同，来自二元星星合并的重力波（GWS）具有更长的波长，并且相干。对于基于地面的GW探测器，当源和地球之间的透镜对象具有质量$ \ sim 1-10^5m_ \ odot $时，应考虑衍射效应，因为chir频波长与屏障的尺度（其Schwarzschild Radius）相当。因此，波形将扭曲为边缘。在这项工作中，我们表明来自爱因斯坦望远镜（ET）等第三代GW探测器的信号将是探测紧凑型暗物质（CDM）或原始黑洞的性质的吸烟枪。当晶状体质量较小时，透镜效应的检测变得更难。 ET比Ligo更敏感，CDM质量$> 5m_ \ odot $可用，而Ligo只能检测到质量$> 100m_ \ odot $。对于对条纹的无效搜索，对ET的一年观察可以将CDM密度分数限制为$ \ sim10^{ - 2} -10^{ - 5} $中的质量范围$ M _ {\ rm {cdm}} = 10m_ \ odot-100m_ \ odot $。
Unlike the electromagnetic radiation from astrophysical objects, gravitational waves (GWs) from binary star mergers have much longer wavelengths and are coherent. For ground-based GW detectors, when the lens object between the source and the earth has mass $\sim 1-10^5M_\odot$, the diffraction effect should be considered since the chirping wavelengths are comparable to the scale of the barrier (its Schwarzschild radius). The waveform will thus be distorted as the fringes. In this work, we show that signals from the third-generation GW detectors like the Einstein Telescope (ET) would be a smoking gun for probing the nature of compact dark matter (CDM) or primordial black holes. Detection of the lensing effects becomes harder when the lens mass is smaller. ET is more sensitive than LIGO, the constraint is available for CDM mass $>5M_\odot$ while LIGO can only detect the mass $>100M_\odot$. For a null search of the fringes, one-year observation of ET can constrain the CDM density fraction to $\sim10^{-2}-10^{-5}$ in the mass range $M_{\rm{CDM}}=10M_\odot-100M_\odot$.
