Deflection and enhancement of solar energy particle flux at the Moon by structures within the terrestrial magnetosphere

Details Deflection and enhancement of solar energy particle flux at the Moon by structures within the terrestrial magnetosphere Deflection and enhancement of solar energy particle flux at the Moon by structures within the terrestrial magnetosphere

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jgra..11501210h&link_type=abstract

Journal of Geophysical Research, Volume 115, Issue A1, CiteID A01210

Physics

1

Planetary Sciences: Solar System Objects: Moon (1221), Magnetospheric Physics: Magnetotail, Magnetospheric Physics: Numerical Modeling, Planetary Sciences: Comets And Small Bodies: Radiation And Chemistry

Scientific paper

The Moon spends 25% of its orbit within the terrestrial magnetosphere. Particle tracking is used to investigate access points of 35 MeV and 760 MeV particles into the magnetosphere for both quiet and disturbed magnetospheric conditions. The results indicate that solar energetic particle (SEP) flux at the Moon can be reduced for storm conditions when the magnitude of the magnetic field in the sheath is enhanced, as particles in the 35 MeV range have limited access to the magnetosphere for storm conditions. Plasmoids are also effective at reducing SEP flux from the tailward direction. The results also indicate that the flux of SEPs from the dawnside of the magnetosphere can be focused into the current sheet, leading to a potential enhancement in SEP flux at the Moon. Particles traveling up the tail for both quiet and storm conditions tended to experience the greatest deflection away from the central tail.

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