Abstract
We compared fluxes of the 1–100 MeV solar energetic particles (SEP) measured in the interplanetary medium (ACE) and in the magnetosphere (Universitetsky-Tatiana, POES—in polar caps, and GOES-11—at geosynchronous orbit) during several SEP events of 2005–2006. Peak intensities of the SEP fluxes inside and outside the magnetosphere were compared for each event. It is shown that observed inside-outside difference depends mainly on direction of interplanetary magnetic field (IMF), on degree of the SEP anisotropy (pitch-angle distribution) in IMF, and on distance of the dayside magnetopause from the Earth.
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Original Russian Text © N.A. Vlasova, N.N. Pavlov, M.I. Panasyuk, N.N. Vedenkin, T.A. Ivanova, G.P. Lyubimov, S.Ya. Reizman, V.I. Tulupov, 2011, published in Kosmicheskie Issledovaniya, 2011, Vol. 49, No. 6, pp. 500–515.
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Vlasova, N.A., Pavlov, N.N., Panasyuk, M.I. et al. Some features of solar cosmic ray penetration into the Earth’s magnetosphere. Cosmic Res 49, 485–499 (2011). https://doi.org/10.1134/S0010952511060116
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DOI: https://doi.org/10.1134/S0010952511060116