The propagation of cosmic rays in the galaxy - Further evidence for a 'nested leaky box'

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Astronomical Models, Galactic Cosmic Rays, High Energy Electrons, Radiative Transfer, Energy Spectra, Interstellar Matter, Propagation Modes, Wave Propagation

Scientific paper

Recent data on the spectrum of cosmic ray electrons indicate that the containment of electrons in the galaxy is independent of energy. On the other hand, cosmic ray nuclei are known to propagate through an energy dependent pathlength. Both results can be accounted for in a propagation model in the form of a double leaky box similar to that suggested by Cowsik and Wilson (1975). The model requires few adjustable parameters but assumes that all primary cosmic ray species are accelerated in the form of a common power law in momentum above 100 MeV/c. It is shown that this model describes correctly the observed nuclear composition and the energy spectra of electrons and nuclei.

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