Possible infrared aurorae on Jupiter |
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| Authors: | John Caldwell AT Tokunaga FC Gillett |
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| Institution: | Department of Earth and Space Sciences, State University of New York, Stony Brook, New York 11794, USA;Institute for Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA |
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| Abstract: | We have observed infrared brightenings near the poles of Jupiter at 8 μm in early 1980. We suspect they are nonthermal in origin. These brightenings are apparently related to the auroral zones which are determined by the magnetic mapping of the magnetotail onto the atmosphere, rather than by the Io flux tube. They were present in both hemispheres in January, present only in the north in February, and probably absent in the south in March. When visible, they were only seen in the hemisphere where the auroral zone was oriented toward the Earth and absent otherwise. |
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