Reference : Observation of dayside subauroral proton flashes with the IMAGE-FUV imagers

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Multidisciplinary, general & others
	To cite this reference:	http://hdl.handle.net/2268/86477

Title :	Observation of dayside subauroral proton flashes with the IMAGE-FUV imagers
Language :	English
Author, co-author :	Hubert, Benoît [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]
	Gérard, Jean-Claude [Université de Liège - ULg > Département d'astrophys.]
	Fuselier, S. A. [> > > >]
	Mende, S. B. [> > > >]
Publication date :	14-Feb-2003
Journal title :	Geophysical Research Letters
Publisher :	Amer Geophysical Union
Volume :	30
Issue/season :	3
Audience :	International
ISSN :	0094-8276
City :	Washington
Abstract :	[en] [1] A detailed description of an intense flash of auroral emissions that occurs equatorward of the dayside auroral oval observed with the IMAGE-FUV imagers is presented. The comparison of simultaneous snapshots of this subauroral flash obtained with the three FUV cameras indicates that proton precipitation is dominant. This transient proton aurora is triggered by the sudden increase of a solar wind dynamic pressure pulse. It occurs on closed field lines mapping to the equatorial plane at distances as small as similar to4 RE. A second similar event is presented, and several other cases are mentioned. These shock induced transcient emissions develop with a time scale of a few minutes (typically similar to5 min), and have a relaxation time on the order of similar to10 minutes.
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/86477

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