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

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posted on 2018-03-22, 11:42 authored by J. D. Nichols, S. V. Badman, F Bagenal, S. J. Bolton, B Bonfond, E. J. Bunce, J. T. Clarke, J. E. P. Connerney, S. W. H. Cowley, R. W. Ebert, M Fujimoto, J-C Gerard, G. R. Gladstone, D Grodent, T Kimura, W. S. Kurth, B. H. Mauk, G Murakami, D. J. McComas, G. S. Orton, A Radioti, T. S. Stallard, C Tao, P. W. Valek, R. J. Wilson, A Yamazaki, I Yoshikawa
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.

History

Citation

Geophysical Research Letters, 2017, 44 (15), pp 7643-7652

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Physics and Astronomy

Version

  • VoR (Version of Record)

Published in

Geophysical Research Letters

Publisher

American Geophysical Union

issn

0094-8276

eissn

1944-8007

Copyright date

2017

Available date

2018-03-22

Publisher version

https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/2017GL073029

Language

en

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