Rocket detection of ultraviolet emission from neutral oxygen and sulfur in the IO Torus
Durrance, S. T.; Feldman, P. D.; Weaver, H. A.
United States
Abstract
Ultraviolet spectra (1150-1750 Å) of the Io plasma torus were obtained using a rocket-borne telescope and spectrometer in 1981 May. The spectra show emissions of neutral oxygen and sulfur as well as the first three ionization states of sulfur. A comparison with IUE spectra indicates that these emissions may have different spatial distributions or be temporally variable, and, in particular, the neutral clouds appear to be very extended.