IS THE GALACTIC COSMIC-RAY SPECTRUM CONSTANT IN TIME?

被引：4

作者：

Eichler, David ^{[1
]}

Kumar, Rahul ^{[1
]}

Pohl, Martin ^{[2
,3
]}

机构：

[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

[2] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany

[3] DESY, D-15738 Zeuthen, Germany

来源：

ASTROPHYSICAL JOURNAL | 2013年 / 769卷 / 02期

基金：

以色列科学基金会;

关键词：

cosmic rays; ACCELERATION; ANISOTROPY; EARTH;

D O I：

10.1088/0004-637X/769/2/138

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The hypothesis is considered that the present, local Galactic cosmic-ray spectrum is, due to source intermittency, softer than average over time and over the Galaxy. Measurements of muogenic nuclides underground could provide an independent measurement of the time-averaged spectrum. Source intermittency could also account for the surprising low anisotropy reported by the IceCube Collaboration. Predictions for Galactic emission of ultrahigh-energy (UHE) quanta, such as UHE gamma rays and neutrinos, might be higher or lower than previously estimated.

引用

页数：4

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