期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 505, 期 3, 页码 3873-3882出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stab1589
关键词
black hole physics; gravitational waves; methods: numerical; methods: statistical
资金
- European Research Council [770017]
- European Research Council (ERC) [770017] Funding Source: European Research Council (ERC)
The study investigates the impact of mass accretion efficiency and common envelope on binary black hole mergers through population synthesis simulations. Hierarchical Bayesian analysis applied to gravitational-wave data reveals constraints on uncertain binary evolution processes.
The growing sample of LIGO-Virgo black holes (BHs) opens new perspectives for the study of massive binary evolution. Here, we study the impact of mass accretion efficiency and common envelope on the properties of binary BH (BBH) mergers, by means of population synthesis simulations. We model mass accretion efficiency with the parameter f(MT) is an element of[0.05, 1], which represents the fraction of mass lost from the donor which is effectively accreted by the companion. Lower values of f(MT) result in lower BBH merger rate densities and produce mass spectra skewed towards lower BH masses. Our hierarchical Bayesian analysis, applied to BBH mergers in the first and second gravitational-wave transient catalogue, yields zero support for values of f(MT) less than or similar to 0.6, with a lower boundary of the 99 percent credible intervals equal to f(MT) = 0.59. This result holds for all the values of the common-envelope efficiency parameter we considered in this study alpha(CE) is an element of[1, 10]. This confirms that gravitational-wave data can be used to put constraints on several uncertain binary evolution processes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据