Response of Jupiter's auroras to conditions in the interplanetary medium as measured by the Hubble Space Telescope and Juno

Nichols, J.D. and Badman, Sarah Victoria and Bagenal, F. and Bolton, S. J. and Bonfond, B. . and Bunce, Emma and Clarke, J. T. and Connerney, J. E. P. and Cowley, S. W. H. and Ebert, R. W. and Fujimoto, M. and Gerard, Jean Claude and Gladstone, G. R. and Grodent, Denis and Kimura, T. and Kurth, W.S. and Mauk, Barry H. and Murakami, G. and McComas, D. J. and Orton, G. S. and Radioti, Aikaterini and Stallard, Tom and Tao, Chihiro and Valek, P.W. and Wilson, R. and Yamazaki, A. and Yoshikawa, I. (2017) Response of Jupiter's auroras to conditions in the interplanetary medium as measured by the Hubble Space Telescope and Juno. Geophysical Research Letters, 44 (15). pp. 7643-7652. ISSN 0094-8276

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We present the first comparison of Jupiter's auroral morphology with an extended, continuous and complete set of near-Jupiter interplanetary data, revealing the response of Jupiter's auroras to the interplanetary conditions. We show that for ∼1-3 days following compression region onset the planet's main emission brightened. A duskside poleward region also brightened during compressions, as well as during shallow rarefaction conditions at the start of the program. The power emitted from the noon active region did not exhibit dependence on any interplanetary parameter, though the morphology typically differed between rarefactions and compressions. The auroras equatorward of the main emission brightened over ∼10 days following an interval of increased volcanic activity on Io. These results show that the dependence of Jupiter's magnetosphere and auroras on the interplanetary conditions are more diverse than previously thought.

Item Type:
Journal Article
Journal or Publication Title:
Geophysical Research Letters
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Accepted for publication in Geophysical Research Letters. Copyright 2017 American Geophysical Union. Further reproduction or electronic distribution is not permitted. ©2017. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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?? geophysicsearth and planetary sciences(all) ??
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Deposited On:
03 Apr 2017 15:32
Last Modified:
06 Jul 2024 23:53