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Poster (Scientific congresses and symposiums)
Cassini UVIS time-resolved Jupiter auroral data compared to QP radio bursts
Pryor, W.; Hospodarsky, G.; Stewart, I. et al.
2003EGS - AGU - EUG Joint Assembly
 

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Abstract :
[en] The Cassini Ultraviolet Imaging Spectrograph (UVIS) observed Jupiter in a 4-sec integration "high time-resolution mode" on Jan 8, 13-14, and 20-21 in 2001. In this mode Extreme-Ultraviolet and Far-Ultraviolet spectra were obtained with reduced spectral and spatial resolution in order to study rapid variations in H2 band and H Lyman alpha emission. Previous work has shown that the region inside Jupiter's main auroral ovals contains highly variable spots of emission (auroral flares) that persist for typically 1 or 2 minutes. This duration is similar to that in Jupiter's quasi-periodic (QP) radio bursts. We compare UVIS data to simultaneous Galileo Plasma Wave Subsystem (PWS) and Cassini Radio PWS (RPWS) observations. Jan 8 was an active period for UV variability, that we associate with polar auroral flares. There is a correlation between the radio and UV bursts in this period, suggesting that they are related phenomena. We will also explore coordinated Hubble Space Telescope Imaging Spectrograph time-tagged UV images from Jan 13-14 and Jan 20-21, 2001 to study the spatial properties of the auroral flares.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Pryor, W.
Hospodarsky, G.
Stewart, I.
KURTH, W.
Esposito, L.
Clarke, J.
Grodent, Denis  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Language :
English
Title :
Cassini UVIS time-resolved Jupiter auroral data compared to QP radio bursts
Publication date :
2003
Event name :
EGS - AGU - EUG Joint Assembly
Audience :
International
Commentary :
12622
Available on ORBi :
since 22 August 2011

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