Extragalactic UHE proton spectrum and prediction for iron-nuclei flux at 108-109 GeV

被引：56

作者：

Berezinsky, VS ^{[1
]}

Grigorieva, SI

Hnatyk, BI

机构：

[1] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Assergi, AQ, Italy

[2] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

[3] Kiev Natl Univ, Astron Observ, UA-04053 Kiev, Ukraine

来源：

ASTROPARTICLE PHYSICS | 2004年 / 21卷 / 06期

关键词：

cosmic rays; ultra-high energy cosmic rays; knee;

D O I：

10.1016/j.astropartphys.2004.06.004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the problem of transition from galactic cosmic rays to extragalactic ultra-high energy cosmic rays. Using the model for extragalactic ultra-high energy cosmic rays and observed all-particle cosmic ray spectrum, we calculate the galactic spectrum of iron nuclei in the energy range 10(8)-10(9) GeV. The flux and spectrum predicted at lower energies agree well with the KASCADE data. The transition from galactic to extragalactic cosmic rays is distinctly seen in spectra of protons and iron nuclei, when they are measured separately. The shape of the predicted iron spectrum agrees with the Hall diffusion. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：617 / 625

页数：9

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