Abstract
It follows from numerous measurements of the differential fluxes of energetic charged particles in corotating interaction regions between solar wind streams with different speeds that the spectra of particles accelerated by reverse shocks are harder than those of particles accelerated by forward shocks. The measurements cannot be explained in terms of the theory of diffusive acceleration (first-order Fermi acceleration). We show that the measurements can be easily explained in terms of the theory of drift acceleration of charged particles by shock waves with allowance made for their multiple scattering from the front.
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Original Russian Text © S.V. Chalov, 2008, published in Pis’ma v Astronomicheskiĭ Zhurnal, 2008, Vol. 34, No. 9, pp. 714–720.
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Chalov, S.V. Acceleration of pickup interstellar protons by shock waves in corotating solar wind regions. Astron. Lett. 34, 646–651 (2008). https://doi.org/10.1134/S1063773708090077
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DOI: https://doi.org/10.1134/S1063773708090077