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Periodic intensity variation in [SIII] 9531A emission from the Jupiter plasma torus
Author(s) -
Roesler F. L.,
Scherb F.,
Oliversen R. J.
Publication year - 1984
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl011i002p00128
Subject(s) - jupiter (rocket family) , physics , longitude , plasma , equator , torus , latitude , intensity (physics) , observatory , variation (astronomy) , astrophysics , atmospheric sciences , astronomy , optics , nuclear physics , geometry , mathematics , space shuttle
The intensity variation of [SIII] 9531 A line emission from the hot plasma torus of Jupiter was measured from Kitt Peak National Observatory during April 1982 using a scanning Fabry‐Perot spectrometer with a field of view 2 R J in diameter centered at 6 R J on the centrifugal equator. During the observational period, which covered 43 rotations of Jupiter, the intensities showed a periodic variation consistent with a zone of enhanced emission approximately 90° in longitude rotating with a period of 10.2 hours, or 2.8% longer than Jupiter' rotational period.