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Studies of the knee of the cosmic rays primary spectrum through measurements in the 10(16)-10(18) eV energy range

CHIAVASSA, Andrea
2011-01-01
2011
Inglese
WOS:000287780800042
2-s2.0-79951721768
Sì, ma tipo non specificato
630
183
188
5
In this contribution I review the most recent results obtained by experiments studying the primary cosmic rays spectrum at energies around the knee, i.e. the change of slope observed at E(knee) similar to 3 x 10(15) eV. The main results are: the change of slope has been observed in the spectra of all secondary components of extensive air showers. The primary chemical composition gets heavier above the knee. Almost all experiments, with the exception of TIBET AS gamma, attribute the change of slope to the light component of cosmic rays. The arrival directions of cosmic rays are highly isotropic. These results favor an astrophysical explanation of the knee either as the maximum energy achievable in galactic sources or of end of the containment inside galactic magnetic fields. Nevertheless the scenario is neither complete nor univocally accepted and relevant informations can be obtained studying the 10(16)-10(18) eV energy range. (C) 2010 Elsevier B.V. All rights reserved.
262
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A. Chiavassa
info:eu-repo/semantics/article
none
03-CONTRIBUTO IN RIVISTA::03A-Articolo su Rivista
03A-Articolo su Rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/98165
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