Observation of the ankle and evidence for a high-energy break in the cosmic ray spectrum

被引：61

作者：

Abbasi, RU

Abu-Zayyad, T

Amman, JF

Archbold, G

Atkins, R

Bellido, JA

Belov, K

Belz, JW

Ben Zvi, SY

Bergman, DR

Burt, GW

Cao, Z

Clay, RW

Connolly, BC

Deng, W

Dawson, BR

Fedorova, Y

Findlay, J

Finley, CB

Hanlon, WF

Hoffman, CM

Hughes, GA

Holzscheiter, MH

Hüntemeyer, P

Jui, CCH

Kim, K

Kirn, MA

Loh, EG

Maestas, MM

Manago, N

Marek, LJ

Martens, K

Matthews, JAJ

Matthews, JN

O'Neill, A

Painter, CA

Perera, L

Reil, K

Riehle, R

Roberts, M

Sasaki, M

Schnetzer, SR

Simpson, KM

Sinnis, G

Smith, JD

Snow, R

Sokolsky, P

Song, C

Springer, RW

Stokes, BT

机构：

[1] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[2] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA

[3] Univ Utah, High Energy Astrophys Inst, Salt Lake City, UT 84112 USA

[4] Los Alamos Natl Lab, Los Alamos, NM USA

[5] Univ Adelaide, Dept Phys, Adelaide, SA, Australia

[6] Univ Montana, Dept Phys & Astron, Missoula, MT 59812 USA

[7] Columbia Univ, Dept Phys, New York, NY 10027 USA

[8] Columbia Univ, Nevis Lab, New York, NY 10027 USA

[9] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA

[10] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba, Japan

来源：

PHYSICS LETTERS B | 2005年 / 619卷 / 3-4期

基金：

澳大利亚研究理事会; 美国国家科学基金会;

关键词：

D O I：

10.1016/j.physletb.2005.05.064

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have measured the cosmic ray spectrum at energies above 10(17) eV using the two air fluorescence detectors of the High Resolution Fly's Eye experiment operating in monocular mode. We describe the detector, PMT and atmospheric calibrations, and the analysis techniques for the two detectors. We fit the spectrum to models describing galactic and extragalactic sources. Our measured spectrum gives an observation of a feature known as the "ankle" near 3 x 10(18) eV, and strong evidence for a suppression near 6 x 10(19) eV. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：271 / 280

页数：10

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