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Jovian longitudinal asymmetry in Io-related and Europa-related auroral hot spotsAuroral emissions generated by the Jovian moons Io and Europa, originating at the foot of the magnetic flux tubes of the satellites, may be largely limited to longitudes where the planet's ionospheric conductivity is enhanced. The enhanced conductivity is produced by trapped energetic electrons that drift into the Jovian atmosphere in regions where the planet's magnetic field is anomalously weak. The most active auroral hot-spot emissions lie in a sector of the northern hemisphere defined by decametric radio emission. Weaker auroral hot spots are found in the southern hemisphere along a magnetic conjugate trace. The brightness and the longitude of the Jovian hot spots predicted in this paper are in agreement with observations reported by Atreya et al. (1977).
Document ID
19790055647
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Dessler, A. J.
(Johns Hopkins University Baltimore, Md., United States)
Chamberlain, J. W.
(Rice University Houston, Tex., United States)
Date Acquired
August 9, 2013
Publication Date
June 15, 1979
Publication Information
Publication: Astrophysical Journal
Subject Category
Lunar And Planetary Exploration
Accession Number
79A39660
Funding Number(s)
CONTRACT_GRANT: NSG-7055
CONTRACT_GRANT: NSF ATM-74-02186-A02
CONTRACT_GRANT: NAVY TASK I
CONTRACT_GRANT: N00024-78-C-5384
CONTRACT_GRANT: NSG-7043
CONTRACT_GRANT: NGL-44-006-012
CONTRACT_GRANT: NSF ATM-77-15712
Distribution Limits
Public
Copyright
Other

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