Minimal cosmogenic neutrinos

被引：68

作者：

Ahlers, Markus ^{[1
]}

Halzen, Francis

机构：

[1] Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr WIPAC, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW D | 2012年 / 86卷 / 08期

基金：

美国国家科学基金会;

关键词：

ENERGY COSMIC-RAYS; RADIATION; EVOLUTION; SPECTRUM; NUCLEI;

D O I：

10.1103/PhysRevD.86.083010

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The observed flux of ultrahigh energy (UHE) cosmic rays (CRs) guarantees the presence of high-energy cosmogenic neutrinos that are produced via photohadronic interactions of CRs propagating through intergalactic space. This flux of neutrinos doesn't share the many uncertainties associated with the environment of the yet unknown CR sources. Cosmogenic neutrinos have nevertheless a strong model dependence associated with the chemical composition, source distribution or evolution and maximal injection energy of UHE CRs. We discuss a lower limit on the cosmogenic neutrino spectrum which depends on the observed UHE CR spectrum and composition and relates directly to experimentally observable and model-independent quantities. We show explicit limits for conservative assumptions about the source evolution.

引用

页数：6

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