论文标题
从其随机背景限制二元黑洞的镜头
Constraining the lensing of binary black holes from their stochastic background
论文作者
论文摘要
引力波（GWS）的重力镜头与电磁辐射相同。但是，迄今为止，尚无对镜头GW瞬态的明确观察。独立地，GW观测值继续搜索由高红移在许多短暂事件中产生的随机GW信号。我们利用了单个瞬变的镜头和限制与未解决的二进制后孔合并群体产生的背景辐射之间的令人惊讶的联系：我们表明，它将可分辨的二进制黑色孔的分数限制为低于$ \ $ \ sim 4 \ sim 4 \ sim 4 \ times 10^{ - 5} $，目前是敏感性的。我们阐明了对现有的低红移GW观测值的解释（假设没有镜头），从它们明显的镜头红移和质量角度来看，并在未来的灵敏度下探索了GW观测值的约束。根据我们的结果，在统计上，对镜头事件观察的最新主张是统计上的。
Gravitational waves (GWs) are subject to gravitational lensing in the same way as electromagnetic radiation. However, to date, no unequivocal observation of a lensed GW transient has been reported. Independently, GW observatories continue to search for the stochastic GW signal which is produced by many transient events at high redshift. We exploit a surprising connection between the lensing of individual transients and limits to the background radiation produced by the unresolved population of binary back hole mergers: we show that it constrains the fraction of individually resolvable lensed binary black holes to less than $\sim 4\times 10^{-5}$ at present sensitivity. We clarify the interpretation of existing, low redshift GW observations (obtained assuming no lensing) in terms of their apparent lensed redshifts and masses and explore constraints from GW observatories at future sensitivity. Based on our results, recent claims of observations of lensed events are statistically disfavoured.
