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Poster (Scientific congresses and symposiums)
In situ observation of decametric Jovian radio sources with Juno: comparison with simultaneous radio, electron and UV data
Louis, Corentin; Louarn, Philippe; Kurth, William et al.
2019AGU Fall Meeting 2019
 

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Abstract :
[en] Since the discovery of the jovian auroral radio emissions, the position of the different radio source components (broadband kilometric (bKOM), hectometric (HOM) and decametric (DAM)) and their association with far ultraviolet (FUV) auroral emissions have been discussed extensively. We recently surveyed Juno’s first fifteen perijoves to track local radio sources from Juno/Waves in situ measurements (50 Hz–40 MHz). We conclude that the bKOM, HOM and DAM radio sources are located at different altitudes on the same magnetic field lines, with M-shell ranging from 10 to 62. Comparisons with the Jovian FUV auroral images simultaneously acquired by the Hubble Space Telescope (HST) reveals a partial spatial colocation between the FUV emission of the main oval and the radio sources studied here. These work focuses on Juno crossings of DAM sources for which FUV observations (HST/STIS, Juno/UVS), radio (Juno/Waves) and electron (Juno/JADE) measurements weer simultaneously acquired. These allow us to (i) better constrain the source locations, (ii) better understand the link between UV and DAM radio emissions, (iii) obtain the electron distribution function and the electron energy flux involved in the DAM radio emissions and (iv) compare with the theoretical radio emission process known as the Cyclotron Maser Instability.
Research center :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Louis, Corentin
Louarn, Philippe
Kurth, William
Allegrini, Frédéric
Hue, Vincent
Bonfond, Bertrand  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Imai, Masafumi
Connerney, John
Gladstone, Randy
Language :
English
Title :
In situ observation of decametric Jovian radio sources with Juno: comparison with simultaneous radio, electron and UV data
Publication date :
12 December 2019
Event name :
AGU Fall Meeting 2019
Event organizer :
American Geophysical Union
Event place :
San Francisco, United States
Event date :
du 9 décembre 2019 au 13 décembre 2019
Audience :
International
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
BELSPO - Service Public Fédéral de Programmation Politique scientifique [BE]
Available on ORBi :
since 21 January 2020

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