Propagation of super high-energy cosmic rays in the Galaxy

Abstract

The propagation of high-energy cosmic rays in the Galaxy is investigated. Solutions of a diffusion model are combined with numerically calculated trajectories of particles. The resulting escape path length and interaction path length are presented and energy spectra obtained at Earth are discussed. It is shown that the energy spectra for heavy elements should be flatter as compared to light ones due to nuclear interactions during the propagation process. The obtained propagation properties of ultra-heavy elements indicate that these elements could play an important role for the explanation of the second knee in the cosmic-ray energy spectrum around 400 PeV.

13 pages, 8 figures, Astroparticle Physics in press

References in corpus (4)

• KASCADE measurements of energy spectra for elemental groups of cosmic rays: Results and open problems
• High-energy particle acceleration in the shell of a supernova remnant
• Models of the Knee in the Energy Spectrum of Cosmic Rays
• Theory of cosmic ray production in the supernova remnant RX J1713.7-3946

Cited by in corpus (11)

• High-energy neutrinos in the context of multimessenger physics
• Diffusive propagation of cosmic rays from supernova remnants in the Galaxy. I: spectrum and chemical composition
• On the cosmic ray spectrum from type II Supernovae expanding in their red giant presupernova wind
• Numerical propagation of high energy cosmic rays in the Galaxy I: technical issues
• TeV cosmic-ray proton and helium spectra in the myriad model
• Cosmic rays in galactic and extragalactic magnetic fields
• Cosmic-ray composition and its relation to shock acceleration by supernova remnants
• The origin of galactic cosmic rays
• Calculations of CR energy spectra within the NoRD model
• On the cosmic ray spectrum from type II Supernovae
• A possible explanation of the knee of cosmic light component spectrum from 100 TeV to 3 PeV