EVIDENCE FOR CORRELATED CHANGES IN THE SPECTRUM AND COMPOSITION OF COSMIC-RAYS AT EXTREMELY HIGH-ENERGIES

被引：480

作者：

BIRD, DJ

CORBATO, SC

DAI, HY

DAWSON, BR

ELBERT, JW

GAISSER, TK

GREEN, KD

HUANG, MA

KIEDA, DB

KO, S

LARSEN, CG

LOH, EC

LUO, M

SALAMON, MH

SMITH, JD

SOKOLSKY, P

SOMMERS, P

STANEV, T

TANG, JKK

THOMAS, SB

TILAV, S

机构：

[1] UNIV ADELAIDE,DEPT PHYS & MATH PHYS,ADELAIDE,SA 5005,AUSTRALIA

[2] UNIV UTAH,INST HIGH ENERGY ASTROPHYS,SALT LAKE CITY,UT 84112

[3] UNIV DELAWARE,BARTOL RES INST,NEWARK,DE 19716

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.71.3401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Utah Fly's Eye detector has revealed a change in the cosmic ray composition which is correlated with structure in the all-particle energy spectrum. The data can be fitted by a simple model of a steep power law spectrum of heavy nuclei which is overtaken at high energies by a flatter spectrum of protons. The transition occurs near 10(18.5) eV. Anisotropy is not detected, so the high-rigidity particles above the transition energy do not originate in the disk of the Galaxy. An outstanding event of 3 x 10(20) eV implies that the highest energy particles originate in the contemporary era of the Universe.

引用

页码：3401 / 3404

页数：4

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