论文标题

量化针对黑洞和中子星之间质量差距的证据

Quantifying the evidence against a mass gap between black holes and neutron stars

论文作者

de Sá, L. M., Bernardo, A., Bachega, R. R. A., Horvath, J. E., Rocha, L. S., Moraes, P. H. R. S.

论文摘要

缺少$ 2 \,m _ {\ odot} $和$ 5 \,M _ {\ odot} $在紧凑型物体的联合质量分布中的M _ {\ odot} $被称为“质量差距”,主要归因于超级nova机制的特征,从而使其出生。但是,最近的观察结果表明,据报道在“差距”内的许多候选人可能会填补它,而是表明可能是真实的,或者很大程度上是由于少量统计的结果。我们在这项工作中量化了各个候选人并评估质量差距的关节概率。我们的结果表明,绝对质量差距不存在,置信度很高。将来是否相对缺乏物体存在,以及该种群如何与形成过程有关,这可能包括中子星合并,中子恒星崩溃到黑洞和其他人,还有待观察。

The lack of objects between $2\,M_{\odot}$ and $5\,M_{\odot}$ in the joint mass distribution of compact objects has been termed "mass gap", and attributed mainly to the characteristics of the supernova mechanism precluding their birth. However, recent observations show that a number of candidates reported to lie inside the "gap" may fill it, suggesting instead a paucity that may be real or largely a result of small number statistics. We quantify in this work the individual candidates and evaluate the joint probability of a mass gap. Our results show that an absolute mass gap is not present, to a very high confidence level. It remains to be seen if a relative paucity of objects stands in the future, and how this population can be related to the formation processes, which may include neutron star mergers, collapse of a neutron star to a black hole and others.

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