Articles | Volume 33, issue 10
https://doi.org/10.5194/angeo-33-1203-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/angeo-33-1203-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Regular paper
| 
01 Oct 2015
Regular paper |
| 01 Oct 2015
The far-ultraviolet main auroral emission at Jupiter – Part 1: Dawn–dusk brightness asymmetries
Laboratoire de Physique Atmosphérique et Planétaire, Université de Liège, Allée du 6 Août, 19c, 4000 Liège, Belgium
Invited contribution by B. Bonfond, recipient of the EGU Division Outstanding Young Scientists Award 2015.
J. Gustin
Laboratoire de Physique Atmosphérique et Planétaire, Université de Liège, Allée du 6 Août, 19c, 4000 Liège, Belgium
J.-C. Gérard
Laboratoire de Physique Atmosphérique et Planétaire, Université de Liège, Allée du 6 Août, 19c, 4000 Liège, Belgium
D. Grodent
Laboratoire de Physique Atmosphérique et Planétaire, Université de Liège, Allée du 6 Août, 19c, 4000 Liège, Belgium
A. Radioti
Laboratoire de Physique Atmosphérique et Planétaire, Université de Liège, Allée du 6 Août, 19c, 4000 Liège, Belgium
B. Palmaerts
Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, Germany
Laboratoire de Physique Atmosphérique et Planétaire, Université de Liège, Allée du 6 Août, 19c, 4000 Liège, Belgium
S. V. Badman
Lancaster University, Department of Physics, Lancaster, UK
K. K. Khurana
University of California, Los Angeles, Los Angeles, California, USA
C. Tao
Institut de Recherche en Astrophysique et Planétologie, Toulouse, France
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B. Bonfond, J. Gustin, J.-C. Gérard, D. Grodent, A. Radioti, B. Palmaerts, S. V. Badman, K. K. Khurana, and C. Tao
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Early models of the main auroral emission at Jupiter assumed axisymmetry, but significant local time variability is obvious on any image of the Jovian aurorae. Here we use far-UV images from the Hubble Space Telescope to further characterize these variations on a statistical basis. We show that the dusk side sector is ~3 times brighter than the dawn side, and we suggest that such an asymmetry could be the result of a partial ring current in the nightside magnetosphere.
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Early models of the main auroral emission at Jupiter assumed axisymmetry, but significant local time variability is obvious on any image of the Jovian aurorae. Here we use far-UV images from the Hubble Space Telescope to further characterize these variations on a statistical basis. We show that the dusk side sector is ~3 times brighter than the dawn side, and we suggest that such an asymmetry could be the result of a partial ring current in the nightside magnetosphere.
This article is included in the Encyclopedia of Geosciences
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Short summary
Early models of the main auroral emission at Jupiter assumed axisymmetry, but significant local time variability is obvious on any image of the Jovian aurorae. Here we use Far-UV images from the Hubble Space Telescope to further characterise these variations on a statistical basis. We show that the dusk side sector is ~3 times brighter than the dawn side and we suggest that such an asymmetry could be the result of a partial ring current in the night side magnetosphere.
Early models of the main auroral emission at Jupiter assumed axisymmetry, but significant local...
