标题： 球状星团中的本征双星和中间质量黑洞 显示英文标题

标题： Primordial binaries and intermediate mass black holes in globular clusters

摘要： 我们首次研究了恒星团中包含显著数量的原初双星以及中心黑洞存在的动力学演化。我们使用直接N体模拟，其中黑洞的质量约为星团总质量的百分之一。双星群体的演化受到黑洞的强烈影响，使星团具有一个大的核心和中央密度尖峰。从Plummer模型开始，我们首先经历了一个大约持续10个半质量弛豫时间的阶段，在此期间双星的破坏速度比没有黑洞的类似模拟更快。然而，随后由于核心尺寸较大，双星的破坏显著减缓。因此，原初双星与黑洞之间的动态相互作用相对于迄今为止所研究的情景引入了新的特征，这些情景中黑洞和双星的影响被分别考虑。具体而言，中间质量黑洞对双星的破坏模式可能会留下一个可能被观测到的指纹。 显示英文摘要

摘要： We present the first study of the dynamical evolution of a star cluster that combines a significant population of primordial binaries with the presence of a central black hole. We use direct N-body simulations, with a black hole mass of about one percent of the total mass of the cluster. The evolution of the binary population is strongly influenced by the presence of the black hole, which gives the cluster a large core with a central density cusp. Starting from a Plummer profile, we first encounter a phase, that last approximately 10 half-mass relaxation times, in which binaries are disrupted faster compared to analogous simulations without a black hole. Subsequently, however, binary disruption slows down significantly, due to the large core size. The dynamical interplay between the primordial binaries and the black hole thus introduces new features with respect to the scenarios investigated so far, where the influence of the black hole and of the binaries have been considered separately. Specifically, the pattern of binary destruction by an intermediate-mass black hole may leave a fingerprint that could be detected observationally.