Calculations of CR energy spectra within the NoRD model

Abstract

Energy spectra of galactic cosmic rays calculated within the framework of the NoRD (nonlocal relativistic diffusion) model are presented. The model accounts for the turbulent character of the interstellar medium and the relativistic speed limit requirement. Calculations account for spiral distribution of sources, boundedness of halo, spallation of nuclei, energy dependence of the diffusion coefficient, tempered power law injection spectrum. We show that the knee in the background spectra from the ensemble of supernovae can arise due to relativistic speed limit requirement. We compare our calculations with the results obtained in frames of the local models (LoD and LoRD) and nonlocal nonrelativistic model (NoD).