Jovian equatorial H2 emission from 1979-1987

Authors :: Mcgrath, M. A
Moos, H. W
Ballester, G. E
Coplin, K. A
Source :: ESA, A Decade of UV Astronomy with the IUE Satellite, Volume 1
Publication Year :: 1988
Publisher :: United States: NASA Center for Aerospace Information (CASI), 1988.
Abstract: Ninety two IUE observations of the Jovian equatorial region taken between 2 Dec. 1978 and 1 Feb. 1988 were averaged together by date of observation, resulting in 22 averaged spectra which were fit with a model to determine the amount of H2 Lyman band emission in the region 1552 to 1624A. The data suggest that the H2 emission may vary with time. Especially suggestive is the marked downward trend of the emission between 1983 and 1987, during which time the strength of the emission in the 1552 to 1624A region decreases by a factor of 10. Uncertainty in the existing data and a gap in the data in 1980 and 1981 preclude a positive identification of a correlation between the brightness of the H2 emission and the major solar cycle.

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