The production of actinides in neutron star mergers

Meng-Ru Wu, Projjwal Banerjee
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引用次数: 0

Abstract

Although the multimessenger detection of the neutron star merger event GW170817 confirmed that mergers are promising sites producing the majority of nature’s heavy elements via the rapid neutron-capture process (r-process), a number of issues related to the production of translead nuclei—the actinides—remain to be answered. In this short review paper, we summarize the general requirements for actinide production in r-process and the impact of nuclear physics inputs. We also discuss recent efforts addressing the actinide production in neutron star mergers from different perspectives, including signatures that may be probed by future kilonova and γ-ray observations, the abundance scattering in metal-poor stars, and constraints put by the presence of short-lived radioactive actinides in the Solar system.

中子星合并中锕系元素的产生
尽管对中子星合并事件 GW170817 的多信使探测证实,合并是通过快速中子俘获过程(r-process)产生自然界大多数重元素的大有可为的场所,但与跨导核--锕系元素--的产生有关的一些问题仍有待解答。在这篇简短的综述论文中,我们总结了在快速中子俘获过程中生产锕系元素的一般要求以及核物理投入的影响。我们还讨论了最近从不同角度探讨中子星合并中锕系元素产生的工作,包括未来千新星和γ射线观测可能探测到的特征、贫金属星中的丰度散射以及太阳系中存在短寿命放射性锕系元素所带来的制约。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
8.20
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