用于探测不同银河系恒星坍缩产生的中微子信号的古探测器
Paleodetectors for neutrino signals from diverse Galactic stellar collapses
浏览论文内容
中文总结 AI 辅助
本研究利用古探测器探究银河系恒星坍缩中微子的可探测性，考虑NS质量、BH形成等多种情况，发现10 pc处数十次爆发式超新星事件可被古探测器探测。
中文摘要 AI 辅助
本研究以古探测器（ancient minerals中的核反冲径迹）为对象，探究过去银河系核心坍缩超新星（SNe）中微子的可探测性。研究考虑了核心坍缩结果的多样性，包括中子星（NS）质量的变化、导致黑洞（BH）形成的失败超新星；还纳入了核物态方程（EOS）的作用，因其决定NS半径与最大质量。针对中微子发射更强的模型，量化了灵敏度提升情况——这种发射反映核心坍缩释放的引力能，在形成NS时，致密残余物的发射更强；在形成BH时，EOS最大质量越大，发射越强。此外，受“附近超新星活动可能促成雪球地球事件”假说的启发，还研究了对爆发式超新星的灵敏度。结果显示，距离10 pc处、包含数十次事件的爆发式超新星活动，处于古探测器的探测范围内。
英文摘要
The detectability of neutrinos from past Galactic core collapse supernovae (SNe) is investigated in terms of nuclear recoil tracks in ancient minerals, known as paleodetectors. To account for the diversity of core-collapse outcomes, variations in neutron star (NS) masses as well as failed SNe leading to black hole (BH) formation are taken into account. The role of the nuclear equation of state (EOS) is also considered, as it determines NS radii and maximum masses. The enhancement of sensitivity is quantified for models with larger neutrino emission. This emission reflects the gravitational energy released during core collapse and is larger for more compact remnants in the NS-forming case and for EOS with larger maximum masses in the BH-forming case. Furthermore, motivated by the hypothesis that nearby SN activity may have contributed to the snowball Earth events, the sensitivity to SNe occuring in a burst-like manner is also investigated. The results indicate that burst-like SN activity involving several tens of events at a distance of 10 pc would be within the reach of paleodetectors.
