Some features of solar cosmic ray penetration into the Earth's magnetosphere

Details Some features of solar cosmic ray penetration into the Earth's magnetosphere Some features of solar cosmic ray penetration into the Earth's magnetosphere

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011cosre..49..485v&link_type=abstract

Cosmic Research, Volume 49, Issue 6, pp.485-499

Computer Science

Scientific paper

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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