Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...236.1035t&link_type=abstract
Astrophysical Journal, Part 1, vol. 236, Mar. 15, 1980, p. 1035-1042.
Astronomy and Astrophysics
Astrophysics
28
Forbidden Transitions, Jupiter Atmosphere, Nebulae, Planetary Radiation, Spectral Resolution, Electron Density (Concentration), Emission Spectra, Line Spectra, Planetary Magnetospheres, Spectral Line Width, Thermal Plasmas
Scientific paper
Observations of forbidden line S II 6716-6731 A emissions from the Jovian magnetosphere have been carried out with a PEPSIOS spectrometer at the Hale 5 m telescope. Spectral resolving power was sufficient to resolve the forbidden line S II line widths. From measured 6716-6731 A doublet ratios and spectral line widths a thermal plasma is found characterized by temperatures about 2 x 10 to the 4th K and electron densities about 2000 cu cm. The source of forbidden line S II emissions was centered within a toroidal region of radius 5 Jupiter radii (inside the orbit of Io), with tight latitudinal confinement near the equilibrium equator for ions in the tilted corotating Jovian magnetic field, and significant long-lived longitudinal structure.
Muench Gus
Roesler Fred L.
Trauger John T.
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