Poster (Scientific congresses and symposiums)
Variability of Jupiter’s Main Auroral Emission in Response to Magnetospheric Hot Plasma Injections
Badman, Sarah; Bonfond, Bertrand; Fujimoto, Masaki et al.
2014American Geophysical Union Fall Meeting 2014
 

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Keywords :
Jupiter; Hubble Space Telescope; Hisaki; Lisri
Abstract :
[en] We present observations of Jupiter’s FUV aurora acquired by the Hubble Space Telescope during a two-week interval in January 2014. The variability of the main auroral emission was studied using latitudinal profiles of intensity. The main oval intensity was found to be reduced when bright patches of diffuse emission were present at lower latitudes. These low latitude emissions are interpreted as the signatures of hot plasma injections from the outer magnetosphere, a process which has previously been related to interchange between the flux tubes from the outer magnetosphere and outward-moving flux tubes loaded with iogenic plasma. The main emission was also observed to broaden and shift in latitude, and occasionally display a double peak structure. These observations are interpreted with reference to the expected changes in auroral field-aligned currents associated with the replacement of the radially-stretched, mass-loaded flux tubes in the middle magnetosphere by more dipolar flux tubes containing rarefied hot plasma.
Research center :
LiSRI - Liège Space Research Institute - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Badman, Sarah
Bonfond, Bertrand  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Fujimoto, Masaki
Kagitani, Masato
Kasaba, Yasumasa
Kasahara, Satoshi
Kimura, Tomoki
Melin, Henrik
Murakami, Go
Nichols, Jonathan
Sakanoi, Takeshi
Steffl, Andrew
Tao, Chihiro
Tsuchiya, Fuminori
Uno, Takeru
Yamazaki, Atsushi
Yoneda, Mizuki
Yoshikawa, Ichiro
Yoshioka, Kazuo
More authors (9 more) Less
Language :
English
Title :
Variability of Jupiter’s Main Auroral Emission in Response to Magnetospheric Hot Plasma Injections
Publication date :
16 December 2014
Event name :
American Geophysical Union Fall Meeting 2014
Event organizer :
American Geophysical Union
Event place :
San Francisco, United States - California
Event date :
du 15 décembre 2014 au 19 décembre 2014
Audience :
International
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 19 December 2014

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