Unpublished conference/Abstract (Scientific congresses and symposiums)
From the Hubble Space Telescope to Juno, unraveling the secrets of Jupiter's UV aurorae
Bonfond, Bertrand
201516th Meeting of the FNRS Contact Group Astronomie & Astrophysique
 

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Keywords :
Jupiter; Aurora; Hubble Space Telescope; Lisri
Abstract :
[en] The successive generations of instruments on board the Hubble Space Telescope (HST) have revealed an increasing amount of details concerning the aurorae of Jupiter. Among the most striking results is the finding that these aurorae are actually made of a multitude of components arising from a variety of processes, ranging from the local interaction of the Jovian moons with the magnetospheric plasma to solar-wind induced compression of the whole magnetosphere. In this presentation, I will review a few recent results obtained from Hubble Space Telescope observations. First, I will show how the morphology and the dynamics of the Ganymede footprint, i.e. the aurora on Jupiter created by the electromagnetic interaction between Ganymede and Jupiter, allowed us to infer the processes at play. Then, I will present results on the vertical profile of the auroral emissions and what they tell us about the acceleration of the electrons causing the auroral emissions. Furthermore, I will describe some of the short-timescale dynamics of the polar-most emissions, including their quasi-periodic nature. Finally, I will conclude with a short description of the expected outcome of the Juno mission, which will provide its first scientific results in fall 2016.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Bonfond, Bertrand  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Language :
English
Title :
From the Hubble Space Telescope to Juno, unraveling the secrets of Jupiter's UV aurorae
Publication date :
19 May 2015
Event name :
16th Meeting of the FNRS Contact Group Astronomie & Astrophysique
Event organizer :
Groupe de contact ASTRONOMIE & ASTROPHYSIQUE
Event place :
Bruxelles, Belgium
Event date :
19 mai 2015
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 24 June 2015

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