Extension of the cosmic-ray energy spectrum beyond the predicted Greisen-Zatsepin-Kuz'min cutoff

被引：658

作者：

Takeda, M ^{[1
]}

Hayashida, N

Honda, K

Inoue, N

Kadota, K

Kakimoto, F

Kamata, K

Kawaguchi, S

Kawasaki, Y

Kawasumi, N

Kitamura, H

Kusano, E

Matsubara, Y

Murakami, K

Nagano, M

Nishikawa, D

Ohoka, H

Sakaki, N

Sasaki, H

Shinozaki, K

Souma, N

Teshima, M

Torii, R

Tsushima, I

Uchihori, Y

Yamamoto, T

Yoshida, S

Yoshii, H

机构：

[1] Univ Tokyo, Inst Cosm Ray Res, Tokyo 1888502, Japan

[2] Yamanashi Univ, Fac Engn, Kofu, Yamanashi 4008511, Japan

[3] Saitama Univ, Dept Phys, Urawa, Saitama 3388570, Japan

[4] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan

[5] Nishina Mem Fdn, Tokyo 113, Japan

[6] Hirosaki Univ, Fac Gen Educ, Hirosaki, Aomori 0368560, Japan

[7] Osaka City Univ, Dept Phys, Osaka 5588585, Japan

[8] Yamanashi Univ, Fac Educ, Kofu, Yamanashi 4008510, Japan

[9] Kobe Univ, Dept Phys, Kobe, Hyogo 6578501, Japan

[10] Nagoya Univ, Solar Terr Environm Lab, Nagoya, Aichi 4648601, Japan

[11] Nagoya Univ Foreign Studies, Aichi 4700131, Japan

[12] Natl Inst Radiol Sci, Chiba 2638555, Japan

[13] Ehime Univ, Dept Phys, Matsuyama, Ehime 7908577, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.81.1163

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The cosmic-ray energy spectrum above 10(18).5 eV is reported using the updated data set of the Akeno Giant Air Shower Array from February 1990 to October 1997. The energy spectrum extends beyond 10(20) eV and the energy gap between the highest energy event and the others is being filled up with recently observed events. The spectral shape suggests the absence of the 2.7 K cutoff in the energy spectrum or a possible presence of a new component beyond the 2.7 K cutoff. [S0031-9007(98)06893-8].

引用

页码：1163 / 1166

页数：4

共 38 条

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