Energy spectra of elemental groups of cosmic rays: Update on the KASCADE unfolding analysis

被引：76

作者：

Apel, W. D. ^{[1
]}

Arteaga, J. C. ^{[2
]}

Badea, A. F. ^{[1
]}

Bekk, K. ^{[1
]}

Bluemer, J. ^{[1
,2
]}

Bozdog, H. ^{[1
]}

Brancus, I. M. ^{[3
]}

Brueggemann, M. ^{[4
]}

Buchholz, P. ^{[4
]}

Cossavella, F. ^{[2
]}

Daumiller, K. ^{[1
]}

de Souza, V. ^{[2
]}

Doll, P. ^{[1
]}

Engel, R. ^{[1
]}

Engler, J. ^{[1
]}

Finger, M. ^{[1
]}

Fuhrmann, D. ^{[5
]}

Gils, H. J. ^{[1
]}

Glasstetter, R. ^{[5
]}

Grupen, C. ^{[4
]}

Haungs, A. ^{[1
]}

Heck, D. ^{[1
]}

Hoerandel, J. R. ^{[2
]}

Huege, T. ^{[1
]}

Isar, P. G. ^{[1
]}

Kampert, K. -H. ^{[5
]}

Kang, D. ^{[2
]}

Kickelbick, D. ^{[4
]}

Klages, H. O. ^{[1
]}

Kolotaev, Y. ^{[4
]}

Luczak, P. ^{[6
]}

Mathes, H. J. ^{[1
]}

Mayer, H. J. ^{[1
]}

Milke, J. ^{[1
]}

Mitrica, B. ^{[3
]}

Nehls, S. ^{[1
]}

Oehlschlaeger, J. ^{[1
]}

Ostapchenko, S. ^{[1
]}

Over, S. ^{[4
]}

Petcu, M. ^{[3
]}

Pierog, T. ^{[1
]}

Rebel, H. ^{[1
]}

Roth, M. ^{[1
]}

Schatz, G. ^{[1
]}

Schieler, H. ^{[1
]}

Schroeder, F. ^{[1
]}

Sima, O. ^{[7
]}

Stuempert, M. ^{[2
]}

Toma, G. ^{[3
]}

Ulrich, H. ^{[1
]}

机构：

[1] Forschungszentrum Karlsruhe, Inst Kernphys, D-76021 Karlsruhe, Germany

[2] Univ Karlsruhe, Inst Expt Kernphys, D-76021 Karlsruhe, Germany

[3] Natl Inst Phys & Nucl Engn Bucharest, Bucharest 7690, Romania

[4] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany

[5] Univ Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany

[6] Soltan Inst Nucl Studies Lodz, PL-90950 Lodz, Poland

[7] Univ Bucharest, Dept Phys, Bucharest 76900, Romania

来源：

ASTROPARTICLE PHYSICS | 2009年 / 31卷 / 02期

关键词：

Cosmic ray energy spectrum; Cosmic ray composition; The knee; KASCADE; Hadronic interaction models; FLUKA; GHEISHA;

D O I：

10.1016/j.astropartphys.2008.11.008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The KASCADE experiment measures extensive air showers induced by cosmic rays in the energy range around the so-called knee. The data of KASCADE have been used in a composition analysis showing the knee at 3-5 PeV to be caused by a steepening in the light-element spectra [T. Antoni et al., (KASCADE Coll.), Astropart. Phys. 24 (2005) 1-25]. Since the applied unfolding analysis depends crucially on simulations of air showers, different high-energy hadronic interaction models (QGSJet and SIBYLL) were used. The results have shown a strong dependence of the relative abundance of the individual mass groups on the underlying model. In this update of the analysis we apply the unfolding method with a different low energy interaction model (FLUKA instead of GHEISHA) in the simulations. While the resulting individual mass group spectra do not change significantly, the overall description of the measured data improves by using the FLUKA model. In addition data in a larger range of zenith angle are analysed. The new results are completely consistent, i.e. there is no hint to any severe problem in applying the unfolding analysis method to KASCADE data. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：86 / 91

页数：6

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