Speakers
Prof.
Jing Huang
(Institute of High Energy Physics, CAS)Dr
Ying Zhang
(Institute of High Energy Physics)
Description
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)
Co-author
Dr
Ying Zhang
(Institute of High Energy Physics)
