Some features of solar cosmic ray penetration into the Earth’s magnetosphere |
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Authors: | N A Vlasova N N Pavlov M I Panasyuk N N Vedenkin T A Ivanova G P Lyubimov S Ya Reizman V I Tulupov |
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Institution: | 1.Skobeltsyn Institute of Nuclear Physics,Lomonosov Moscow State University,Moscow,Russia |
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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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