Relic neutrinos: Antineutrinos of primordial nucleosynthesis

被引：8

作者：

Ivanchik, Alexandre, V ^{[1
]}

Yurchenko, Vlad Yu ^{[1
]}

机构：

[1] Ioffe Inst, Polytekhnicheskaya 26, St Petersburg 194021, Russia

来源：

PHYSICAL REVIEW D | 2018年 / 98卷 / 08期

基金：

俄罗斯科学基金会;

关键词：

ELEMENTS; PROSPECTS; UNIVERSE; KAMLAND;

D O I：

10.1103/PhysRevD.98.081301

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

For the first time the antineutrino spectrum formed as a result of neutron and tritium decays during the epoch of primordial nucleosynthesis is calculated. This spectrum is a nonthermal increase in addition to the standard cosmic neutrino background (C nu B) whose thermal spectrum was formed before the beginning of primordial nucleosynthesis. For energy larger than 10(-2) eV the calculated nonthermal antineutrino flux exceeds the C nu B spectrum and there are no other comparable sources of antineutrino in this range. The observations of these antineutrinos will allow us to look directly at the very early Universe and nonequilibrium processes taken place before, during, and some time after primordial nucleosynthesis.

引用

页数：5

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