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Mapping the Brightness of Ganymede's Ultraviolet Aurora using Hubble Space Telescope Observations
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  • Joachim Saur,
  • A Marzok,
  • S Schlegel,
  • Joachim Saur,
  • L Roth,
  • D Grodent,
  • D F Strobel,
  • K D Retherford
Joachim Saur
University of Cologne

Corresponding Author:[email protected]

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A Marzok
University of Cologne
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S Schlegel
University of Cologne
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Joachim Saur
University of Cologne
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L Roth
KTH Royal Institute of Technology
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D Grodent
University of Liège
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D F Strobel
Johns Hopkins University
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K D Retherford
Southwest Research Institute
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Abstract

• Brightness map of Ganymede’s ultraviolet auroral emission has been constructed based on a large set of HST observations • Auroral ovals are structured in upstream and downstream ‘crescents’ • Brightness on sub-Jovian and anti-Jovian side is strongly reduced by a factor of 3-4 compared to upstream and downstream side *