Article (Scientific journals)
"Bar Code" Events in the Juno-UVS Data: A Signature ~10 MeV Electron Microbursts at Jupiter
Bonfond, Bertrand; Gladstone, G. R.; Grodent, Denis et al.
2018In Geophysical Research Letters, 0 (ja)
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Keywords :
aurora; Juno; Juno-UVS; Jupiter; radiation; relativistic electrons
Abstract :
[en] One of the most intriguing discoveries of Juno is the quasi-systematic detection of up-going electrons above the auroral regions. Here we discuss a byproduct of the most energetic component of this population: a contamination resembling bar codes in the Juno-UVS images. This pattern is likely caused by bursts of >10 MeV electrons penetrating the instrument. These events are mostly detected when Juno's magnetic footprint is located poleward of the main emission relative to the magnetic pole. The signal is not periodic, but the bursts are typically 0.1-1 second apart. They are essentially detected when Juno-UVS is oriented towards Jupiter, indicating that the signal is due to up-going electrons. The event detections occur between 1 and 7 Jovian radii above the 1 bar level, suggesting that the electron acceleration takes place close to Jupiter and is thus both strong and brief.
Research center :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Bonfond, Bertrand  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Gladstone, G. R.
Grodent, Denis  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Gérard, Jean-Claude  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Greathouse, T. K.
Hue, V.
Kammer, J. A.
Versteeg, M. H.
Davis, M. W.
Becker, H. N.
Radioti, Aikaterini ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Elliott, S. S.
Imai, M.
Paranicas, C. P.
Bolton, S. J.
Levin, S. M.
Connerney, J. E. P.
More authors (7 more) Less
Language :
English
Title :
"Bar Code" Events in the Juno-UVS Data: A Signature ~10 MeV Electron Microbursts at Jupiter
Publication date :
2018
Journal title :
Geophysical Research Letters
ISSN :
0094-8276
eISSN :
1944-8007
Publisher :
Wiley, Washington, United States - District of Columbia
Volume :
0
Issue :
ja
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
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