Several astrophysical scenarios have been proposed to explain the origin of the population of binary black hole (BBH) mergers detected in gravitational waves by the LIGO/Virgo Collaboration. Among them, BBH mergers assembled dynamically in young massive and open clusters have been shown to produce merger rate densities consistent with LIGO/Virgo estimated rates. We use the results of a suite of direct, high-precision N-body evolutionary models of young massive and open clusters and build the population of BBH mergers, by accounting for both a cosmologically motivated model for the formation of young massive and open clusters and the detection probability of LIGO/Virgo. We show that our models produce dynamically paired BBH mergers that are well consistent with the observed masses, mass ratios, effective spin parameters, and final spins of the second Gravitational Wave Transient Catalog (GWTC-2).

已经提出了几种天体物理学方案来解释 LIGO/Virgo Collaboration 在引力波中检测到的双黑洞 (BBH) 合并种群的起源。其中，在年轻的大块和疏散星团中动态组装的 BBH 合并已被证明产生与 LIGO/Virgo 估计率一致的合并率密度。我们使用了一套直接的、高精度的N年轻的大质量和疏散星团的体演化模型，并通过考虑形成年轻大质量和疏散星团的宇宙学动机模型和 LIGO/Virgo 的检测概率，构建 BBH 合并的群体。我们表明，我们的模型产生了动态配对的 BBH 合并，这些合并与观测到的质量、质量比、有效自旋参数和第二个引力波瞬态目录 (GWTC-2) 的最终自旋非常一致。