July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

On the primary model to explain the relation between a rigidity-dependent spectral hardening of proton and helium spectra and a sharp knee of the all-particle spectrum.

Aug 4, 2015, 4:00 PM
Amazon Foyer (World Forum)

Amazon Foyer

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 226
Poster contribution CR-TH Poster 3 CR


Prof. Jing Huang (Institute of High Energy Physics, CAS)Dr Ying Zhang (Institute of High Energy Physics)


CR spectrum may be not expressed by a simple power law in a certain energy region. Recently, PAMELA, ATIC and CREAM presented a rigidity dependent spectral breaks and remarkable hardening after the breaks in the rigidity region above about 100 GV. On the other hand, the all-particle energy spectrum of primary cosmic rays observed in a wide range from 10^14 to 10^17 eV with the Tibet-III AS array clearly shows a sharp knee at around 4 PeV. In order to explain the both data, we propose a phenomenological model in which extra nearby CR sources are responsible for creating a sharp knee. In this paper, we discuss some details of our model and also show that this model can well explain both the data by PAMELA and others in the lower energy region and that by the Tibet-III AS gamma experiment simultaneously. This model also predicts a dominance of cosmic-ray nuclei heavier than helium at the knee.
Registration number following "ICRC2015-I/" 920
Collaboration -- not specified --

Primary author

Prof. Jing Huang (Institute of High Energy Physics, CAS)


Dr Ying Zhang (Institute of High Energy Physics)

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