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arXiv 1701.04713astro-ph.HEastro-ph.SRhep-ph
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三个惰性中微子模型中的核塌缩超新星中微子通量

Neutrino Fluxes from a Core-Collapse Supernova in a Model with Three Sterile Neutrinos

A. V. Yudin, D. K. Nadyozhin, V. V. Khruschov, S. V. Fomichev

摘要:

本文用数值方法计算了一颗超新星的引力坍缩特征及其质子中子核形成过程中产生的活动中微子和惰性中微子的通量。在不同的输入参数和初始条件下,计算了不同中子化程度的核物质中活动中微子和不育中微子的相对产额。在超致密核物质中,中子化共振度下产生的无菌中微子的比例显著增加已被证实。不育中微子对坍缩动力学和坍缩过程中产生的中微子总通量的贡献相对较小。无菌中微子的总光度比电子中微子的光度低得多,但它们的光谱在高能量下要硬得多。

英文摘要:

The characteristics of the gravitational collapse of a supernova and the fluxes of active and sterile neutrinos produced during the formation of its protoneutron core have been calculated numerically. The relative yields of active and sterile neutrinos in core matter with different degrees of neutronization have been calculated for various input parameters and various initial conditions. A significant increase in the fraction of sterile neutrinos produced in superdense core matter at the resonant degree of neutronization has been confirmed. The contributions of sterile neutrinos to the collapse dynamics and the total flux of neutrinos produced during collapse have been shown to be relatively small. The total luminosity of sterile neutrinos is considerably lower than the luminosity of electron neutrinos, but their spectrum is considerably harder at high energies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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