An anti-knee

Details An anti-knee An anti-knee

2011-04-19

arxiv.org/abs/1104.3710v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

6 pages, 4 figures

Scientific paper

The energy spectra for five elemental groups (p, He, C, Si, Fe) of cosmic rays, are simulated. Calculations are based on an analysis of superposition of few cosmic ray sources (Supernovae of different types) and principles of diffusive shock acceleration. Results of the analysis in the knee region show that summarizing energy spectra for elemental mass groups of cosmic rays can have significant oscillations of spectral index $\gamma$. Moreover, a kink (increasing $\gamma$) in Fe spectrum at energy $2\cdot 10^{15}$ eV, is discovered. In order to distinguish from the knee (decreasing $\gamma$) the kink can be called an anti-knee (increasing $\gamma$).

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