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    Rights statement: Accepted for publication in Geophysical Research Letters. Copyright 2017 American Geophysical Union. Further reproduction or electronic distribution is not permitted.

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

Research output: Contribution to journalJournal article

E-pub ahead of print
  • J.D. Nichols
  • F. Bagenal
  • S. J. Bolton
  • B. . Bonfond
  • Emma Bunce
  • J. T. Clarke
  • J. E. P. Connerney
  • S. W. H. Cowley
  • R. W. Ebert
  • M. Fujimoto
  • Jean Claude Gerard
  • G. R. Gladstone
  • Denis Grodent
  • T. Kimura
  • W.S. Kurth
  • Barry H. Mauk
  • G. Murakami
  • D. J. McComas
  • G. S. Orton
  • Aikaterini Radioti
  • Tom Stallard
  • Chihiro Tao
  • P.W. Valek
  • R. Wilson
  • A. Yamazaki
  • I. Yoshikawa
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<mark>Journal publication date</mark>25/05/2017
<mark>Journal</mark>Geophysical Research Letters
<mark>State</mark>E-pub ahead of print
Early online date25/05/17
<mark>Original language</mark>English

Abstract

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.

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Accepted for publication in Geophysical Research Letters. Copyright 2017 American Geophysical Union. Further reproduction or electronic distribution is not permitted.