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A study of the Jovian [S II] nebula at high spectral resolution

Trauger, J. T. and Münch, G. and Roesler, F. L. (1980) A study of the Jovian [S II] nebula at high spectral resolution. Astrophysical Journal, 236 (1). pp. 1035-1042. ISSN 0004-637X. doi:10.1086/157831.

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Observations of forbidden line S II λλ6716-6731 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 λλ6716-6731 A doublet ratios and spectral line widths a thermal plasma is found characterized by temperatures about 2 x 10^4 K and electron densities about ~2 x 10^3 cm^(-3). 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.

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Additional Information:© 1980 American Astronomical Society. Provided by the NASA Astrophysical Data System. This work has been supported by NASA through grant NGL 05-002-003 to the California Institute of Technology and by NSF through grant GA 15733 to the University of Wisconsin.
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Deposited On:14 May 2014 19:24
Last Modified:10 Nov 2021 17:15

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