Cosmic rays measurements around the knee of the primary spectrum

被引：0
作者：
Chiavassa, Andrea [1 ]
机构：
[1] Univ Turin, Dipartimento Fis, I-10125 Turin, Italy
来源：
ISVHECRI 2012 - XVII INTERNATIONAL SYMPOSIUM ON VERY HIGH ENERGY COSMIC RAY INTERACTIONS | 2013年 / 52卷
关键词：
PRIMARY PROTON SPECTRUM; ENERGY-SPECTRUM; EAS-TOP; MASS COMPOSITION; KASCADE-GRANDE; HELIUM SPECTRA; REGION; ANISOTROPY; TEV; DETECTOR;
D O I：
10.1051/epjconf/20125204001
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this contribution I will summarize and discuss some recent results about the study of the knee of the cosmic rays energy spectrum, indicating that this spectral feature is originated by astrophysical processes. I will then discuss the current experimental efforts that are giving further insights. Latest all particle spectrum measurements have shown that, between 10(16)eV and 10(18)eV, the spectrum cannot be described by a single slope power law: an hardening around 10(16)eV and a steepening around 10(17)eV have been observed. This last feature has been attributed, by the KASCADE-Grande experiment, to the heavy primary component, confirming that the energy of the elemental spectra change of slope increase with the mass of the primary particle.
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