论文标题
二进制黑洞合并和长长的伽马射线爆发是从相同的黑洞人群中绘制的吗？
Are binary black hole mergers and long gamma-ray bursts drawn from the same black hole population?
论文作者
论文摘要
本文比较了Ligo/处女座检测到的BBH合并的种群与选定的Long GRB世界模型，该模型与延迟功能相卷曲（LGRBs用作恒星质量BH形成的示踪剂）。比较涉及产生BBH合并局部速率所需的红移分布和LGRB的比较。 我们发现BBH合并和LGRB不能具有相同的形成历史，除非BBHS合并具有多个GYR的长时间合并时间。这意味着在当前GW干涉仪的地平线内的红移Z〜2-3合并时长GRB形成期间出生的BHS出生。我们还表明，LGRB比BBH合并更为多，因此大多数人不会在BBH合并中结束生命。 我们将这些结果解释为表明BBH合并和LGRB构成了两个不同的恒星质量BHS种群，而LGRB比BBH合并更频繁。我们推测，LGRB的后代可能比BBH合并更像银河高质量X射线二进制。我们最终讨论了BBH合并中快速旋转LGRB后代的亚种群的可能存在，这表明该人群（如果存在）预计将在红移Z〜1之外占主导地位，从而导致BBH合并的观察到的特性发生了变化。
This paper compares the population of BBH mergers detected by LIGO/Virgo with selected long GRB world models convolved with a delay function (LGRBs are used as a tracer of stellar mass BH formation). The comparison involves the redshift distribution and the fraction of LGRBs required to produce the local rate of BBH mergers. We find that BBH mergers and LGRBs cannot have the same formation history, unless BBHs mergers have a long coalescence time of several Gyr. This would imply that BHs born during the peak of long GRB formation at redshift z~2-3 merge within the horizon of current GW interferometers. We also show that LGRBs are more numerous than BBH mergers, so that most of them do not end their lives in BBH mergers. We interpret these results as an indication that BBH mergers and LGRBs constitute two distinct populations of stellar mass BHs, with LGRBs being more frequent than BBH mergers. We speculate that the descendants of LGRBs may resemble galactic High-Mass X-Ray Binaries more than BBH mergers. We finally discuss the possible existence of a sub-population of fast-spinning LGRBs descendants among BBH mergers, showing that this population, if it exists, is expected to become dominant beyond redshift z ~ 1, leading to a change in the observed properties of BBH mergers.
