About the origin and propagation of cosmic rays

Physics

Scientific paper

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Scientific paper

We consider the problem of the cosmic ray spectrum formation assuming that cosmic rays are produced by galactic sources. The fractional diffusion equation proposed in our recent papers is used to describe the cosmic rays propagation in interstellar medium. We show that in the framework of this approach it is possible to explain the locally observed basic feature of the cosmic rays in the energy region 1010 ÷ 1020 eV: distinction in spectral exponent of protous and other nuclei below 10 14 eV, mass composition variation at E ≥ 1010 eV, knee problem, attering of the primary spectrum at E ≥ 1018 ÷ 1019 eV, anisotropy dependence on primary energy.

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