Reference : Flying through a Dawn Storm : an analysis of Juno-UVS images during PJ11
Scientific congresses and symposiums : Poster
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/230302
Flying through a Dawn Storm : an analysis of Juno-UVS images during PJ11
English
Bonfond, Bertrand mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]
Gladstone, G. R. []
Grodent, Denis mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]
Yao, Zhonghua mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]
Gérard, Jean-Claude mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Kammer, J. []
Hue, V. []
Greathouse, T. K. []
Versteeg, M. []
Kurth, W.S. []
Louarn, P. []
Hospodarsky, G. B. []
Imai, M. []
Connerney, J.E.P. []
Gershman, D. []
Kotsiaros, S. []
Adriani, A. []
Mauk, B. []
Allegrini, F. []
Levin, S. []
Bolton, S. J. []
11-Dec-2018
No
No
International
AGU Fall Meeting 2018
from 10 december 2018 to 14 december 2018
AGU
Washington
Washington D.C.
[en] Jupiter ; aurora ; dawn storm
[en] Auroral dawn storms at Jupiter are spectacular brightenings of the dawn arc of the main emission. These events are relatively rare, but they account for some of the brightest aurorae ever observed at Jupiter. An event with a total power emitted by the UV aurora in excess of 8.5 TW was even observed by Hisaki and the Hubble Space Telescope on May 21st 2016, during Juno’s approach of Jupiter. On February 7th 2018 (perijove 11, or PJ11), Juno’s ultraviolet imaging spectrograph, called Juno-UVS, observed the development of such a dawn storm, right before Juno flew right through the magnetic field line connected to this feature. The storm started around 13:15 UT as a limited enhancement of the main emission around midnight before slowly migrating and expanding on the dusk flank. As the brightness increased, the arc began to thicken and fork into two separate arcs. Simultaneously, the signatures of methane absorption of the UV light progressively intensified, indicative of a precipitation of increasingly energetic particles. Then, around 18:15 UT, Juno entered the field lines feeding the dawn storm. The remote auroral observations thus provide extremely valuable context information for the in-situ radio waves, particle and magnetic field observations gathered at this time.
Space sciences, Technologies and Astrophysics Research - STAR
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy
Researchers ; Professionals
http://hdl.handle.net/2268/230302

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