论文标题
用强烈的重力波测量暗物质的粘度
Measuring the viscosity of dark matter with strongly lensed gravitational waves
论文作者
论文摘要
基于紧凑型二进制聚结的强透明引力波（GWS），我们提出了一种新的策略，以检查引力波结构域中暗物质（DM）的流体剪切粘度（DM），即GW是否会在非零剪切层的DM液体中播种时，是否会导致阻尼效应。通过假设暗物质自散是足够有效，足以使流体动力学描述有效，我们的结果表明，未来的基于地面的爱因斯坦望远镜（ET）和卫星GW观测值（大爆炸观察者； BBO）可能会成功地检测出银河和群体量表的任何暗物质自我相关性。
Based on the strongly lensed gravitational waves (GWs) from compact binary coalescence, we propose a new strategy to examine the fluid shear viscosity of dark matter (DM) in the gravitational wave domain, i.e., whether a GW experiences the damping effect when it propagates in DM fluid with nonzero shear viscosity. By assuming that the dark matter self-scatterings are efficient enough for the hydrodynamic description to be valid, our results demonstrate that future ground-based Einstein Telescope (ET) and satellite GW observatory (Big Bang Observer; BBO) may succeed in detecting any dark matter self-interactions at the scales of galaxies and clusters.
