Physics
Scientific paper
Aug 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3116806m&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 16, CiteID L16806
Physics
Ionosphere: Auroral Ionosphere (2704), Magnetospheric Physics: Auroral Phenomena (2407), Magnetospheric Physics: Energetic Particles, Precipitating, Magnetospheric Physics: Magnetosphere-Inner, Magnetospheric Physics: Planetary Magnetospheres (5443, 5737, 6030)
Scientific paper
The relationship between H3+ emissions in the Jovian sub-auroral region and auroral activity inside the auroral oval was examined using 3.53-μm image data from the IRTF Galileo support monitoring program of NASA. The sub-auroral emission region of H3+ was defined as a diffusive and weak emission region surrounding the auroral oval with a gradual decrease in intensity at lower latitudes beyond 6 RJ. The size of this region was found to vary approximately in proportion to the Jovian auroral activity. We discuss some possible sub-auroral emission mechanisms and suggest that the emission would be caused by precipitation from the inner magnetosphere associated with the higher latitude auroral activity, implying that the Jovian magnetospheric activity is tightly connected between the inner and middle magnetosphere.
Misawa Hiroaki
Miyoshi Y. S.
Morioka Akira
Nozawa Hiraku
Okano Shinya
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