太阳系中p核素丰度探测超新星中的集体中微子振荡
Solar-System Abundances of $p$-Nuclides Probe Collective Neutrino Oscillations in Supernovae
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中文总结 AI 辅助
研究超新星中集体中微子振荡，通过用20 M⊙前身星对νp过程建模，耦合流体动力学与核合成，发现其对关键p核素及92Nb有影响，振荡起始位置与观测最佳匹配，为该现象提供新证据。
中文摘要 AI 辅助
核心坍缩超新星中集体中微子振荡的直接证据仍然难以捉摸。我们表明，这种量子现象会在太阳系中富含质子的核素丰度模式上留下印记。使用一个20 M⊙的前身星对νp过程进行建模，我们绘制了总产量对振荡起始半径的依赖性，自洽地耦合了流体动力学和核合成。振荡将关键的p核素（92、94Mo，96、98Ru）和长寿命的92Nb提高了多达两个数量级，使其丰度与观测结果一致。当振荡在原中子星表面10公里内开始时，发现了最佳匹配，表明存在快速集体振荡。
英文摘要
Direct evidence for collective neutrino oscillations in core-collapse supernovae remains elusive. We show that this quantum phenomenon leaves a footprint on the abundance pattern of proton-rich nuclides in the solar system. Modeling the $νp$-process using a $20\,M_\odot$ progenitor, we map out the dependence of the total yields on the starting radius of the oscillations, self-consistently coupling hydrodynamics and nucleosynthesis. The oscillations boost key $p$-nuclides ($^{92,94}\text{Mo}$, $^{96,98}\text{Ru}$) and long-lived $^{92}\text{Nb}$ by up to two orders of magnitude, bringing their abundances into agreement with the observations. The best match is found when oscillations commence within $10\text{ km}$ of the proto-neutron star surface, indicating fast collective oscillations.
