Binary neutron star mergers observations are a unique way to constrain fundamental physics and astrophysics at the extreme. The interpretation of gravitational-wave events and their electromagnetic counterparts crucially relies on general-relativistic models of the merger remnants. Quantitative models can be obtained only by means of numerical relativity simulations in 3+1 dimensions including detailed input physics for the nuclear matter, electromagnetic and weak interactions. This review summarizes the current understanding of merger remnants focusing on some of the aspects that are relevant for multimessenger observations.

中文翻译：

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中子星合并遗迹


双中子星合并观测是在极端情况下限制基础物理学和天体物理学的独特方法。对引力波事件及其电磁对应物的解释关键依赖于合并遗迹的广义相对论模型。定量模型只能通过 3+1 维度的数值相对论模拟来获得，包括核物质、电磁和弱相互作用的详细输入物理学。这篇综述总结了目前对合并遗迹的理解，重点关注与多信使观测相关的一些方面。