论文标题
通过小小的暗物质晕镜探测暗物质的性质
Probing the nature of dark matter via gravitational waves lensed by small dark matter halos
论文作者
论文摘要
暗物质（DM）占据了宇宙中大部分物质含量，可能是冷的（CDM）。但是，小规模观测值可能需要对标准CDM模型进行修改，并且DM可能是自我相互作用（SIDM）或温暖（WDM）。在这里，我们表明，通过小光环（$ \ sim10^3-10^3-10^6m_ \ odot $; mini-halos）从二进制黑洞合并中的引力波的衍射镜头（GWS）可以作为对DM的性质的清晰探测，从基于DM/dm的Baryonic进程中的污染物均基于DM的污染物。 CDM，WDM和SIDM模型产生的预期镜头GW信号和事件速率彼此显着不同，因为这些模型预测的Halo密度曲线和丰富性的差异。 We estimate the detection rates of such lensed GW events for a number of current and future GW detectors, such as the Laser Interferometer Gravitational Observatories (LIGO), the Einstein Telescope (ET), the Cosmic Explorer (CE), Gravitational-wave Lunar Observatory for Cosmology (GLOC), the Deci-Hertz Interferometer Gravitational Wave Observatory (DECIGO), and the大爆炸观察者（BBO）。我们发现，通过假设CDM，WDM（具有质量$> 30 $ \，KEV）或SIDM模型，GLOC可以每年检测到每年一次此类事件，而Decigo（BBO）每年可以检测到多个（数百个）事件，这表明DM的性质可以通过DECIGO和BBO通过Diffract the Diffract的diffractective of diffractive lestection contection difcection diffractive logf gnective of diffractive logf gw gw gw gw。其他GW探测器不太可能在有限的观察期内检测大量此类事件。但是，如果迷你山脉密度的内部斜率比Navarro-frenk-white（NFW）曲线的陡峭陡峭，例如，伪简化曲线，则可以通过ET和CE检测到一到一百个这样的GW事件。
Dark matter (DM) occupies the majority of matter content in the universe and is probably cold (CDM). However, modifications to the standard CDM model may be required by the small-scale observations, and DM may be self-interacting (SIDM) or warm (WDM). Here we show that the diffractive lensing of gravitational waves (GWs) from binary black hole mergers by small halos ($\sim10^3-10^6M_\odot$; mini-halos) may serve as a clean probe to the nature of DM, free from the contamination of baryonic processes in the DM studies based on dwarf/satellite galaxies. The expected lensed GW signals and event rates resulting from CDM, WDM, and SIDM models are significantly different from each other, because of the differences in halo density profiles and abundances predicted by these models. We estimate the detection rates of such lensed GW events for a number of current and future GW detectors, such as the Laser Interferometer Gravitational Observatories (LIGO), the Einstein Telescope (ET), the Cosmic Explorer (CE), Gravitational-wave Lunar Observatory for Cosmology (GLOC), the Deci-Hertz Interferometer Gravitational Wave Observatory (DECIGO), and the Big Bang Observer (BBO). We find that GLOC may detect one such events per year assuming the CDM model, DECIGO (BBO) may detect more than several (hundreds of) such events per year, by assuming the CDM, WDM (with mass $>30$\,keV) or SIDM model, suggesting that the DM nature may be strongly constrained by DECIGO and BBO via the detection of diffractive lensed GW events by mini-halos. Other GW detectors are unlikely to detect a significant number of such events within a limited observational time period. However, if the inner slope of the mini-halo density profile is sufficiently steeper than the Navarro-Frenk-White (NFW) profile, e.g., the pseudo-Jaffe profile, one may be able to detect one to more than hundred such GW events by ET and CE.
