Article (Scientific journals)
Overview of a large observing campaign of Jupiter's aurora with the Hubble Space Telescope combined with Juno-UVS data
Palmaerts, Benjamin; Grodent, Denis; Bonfond, Bertrand et al.
2024In Icarus, 408, p. 115815
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Keywords :
Aurora; Juno; Jupiter; Magnetosphere; Ultraviolet; Astronomy and Astrophysics; Space and Planetary Science
Abstract :
[en] Between February and September 2019, Jupiter's ultraviolet aurorae were frequently observed during a large campaign of the Hubble Space Telescope (HST GO-15638). The campaign included approximately 10 visits around each of the perijoves of the Juno spacecraft orbits 18 to 22 around Jupiter. During this time, the solar activity was minimal, giving the opportunity to investigate auroral dynamics minimally driven by the solar wind. The main emission often appeared fainter than usually observed, particularly on the dawn side where the dawn arc was not always present. In contrast, emissions poleward of the main emission were dynamic, exhibiting polar bright spots, extremely bright flares and quasi-periodic flashes. Many other features are observed, such as dawn storms, long-standing secondary arc parallel to the main emission, injection signatures, transpolar arcs and bridges connecting the main emission to the polar emissions. HST high temporal and spatial resolutions enable the investigation of the dynamics of the auroral structures and substructures like beads within the main emission. Juno auroral observations are also combined with HST images to track conjugate auroral features in both hemispheres simultaneously. Finally, a splitting of the main emission into two narrow parallel arcs is highlighted for the first time.
Research center :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège [BE]
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Palmaerts, Benjamin  ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) ; Remote Sensing and Geodata Unit, Scientific Institute of Public Service, Liege, Belgium
Grodent, Denis  ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Bonfond, Bertrand  ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Yao, Zhonghua ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) ; Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
Guo, Ruilong ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) ; Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, School of Space Sciences and Physics, Shandong University, Weihai, China
Gérard, Jean-Claude  ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Haewsantati, Kamolporn  ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) ; Department of Physics, Mahidol Wittayanusorn School, Nakhon Pathom, Thailand
Gladstone, G.R.;  Southwest Research Institute, San Antonio, United States
Greathouse, T.K.;  Southwest Research Institute, San Antonio, United States
Hue, V.;  Aix-Marseille Université, CNRS, CNES, Institut Origines, LAM, Marseille, France
Nichols, J.D.;  Department of Physics and Astronomy, University of Leicester, Leicester, United Kingdom
Language :
English
Title :
Overview of a large observing campaign of Jupiter's aurora with the Hubble Space Telescope combined with Juno-UVS data
Publication date :
15 January 2024
Journal title :
Icarus
ISSN :
0019-1035
eISSN :
1090-2643
Publisher :
Academic Press Inc.
Volume :
408
Pages :
115815
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
B.P. D.G. B.B. and J.-C.G. acknowledge financial support from the Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA. B.B. is a Research Associate of the Fonds de la Recherche Scientifique – FNRS. The work of G.R.G. and T.K.G was funded by NASA's New Frontiers Program for Juno (managed by the Jet Propulsion Laboratory) via a subcontract with Southwest Research Institute. V.H. acknowledges support from the French government under the France 2030 investment plan, as part of the Initiative d'Excellence d'Aix-Marseille Université – A*MIDEX AMX-22-CPJ-04.B.P., D.G., B.B. and J.-C.G. acknowledge financial support from the Belgian Federal Science Policy Office (BELSPO) via the PRODEX Programme of ESA. B.B. is a Research Associate of the Fonds de la Recherche Scientifique – FNRS. The work of G.R.G., and T.K.G was funded by NASA's New Frontiers Program for Juno (managed by the Jet Propulsion Laboratory) via a subcontract with Southwest Research Institute. V.H. acknowledges support from the French government under the France 2030 investment plan, as part of the Initiative d'Excellence d'Aix-Marseille Université – A*MIDEX AMX-22-CPJ-04.
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