Universität zu Köln

Grodent, Denis ORCID: 0000-0002-9938-4707, Bonfond, B., Yao, Z., Gerard, J-C., Radioti, A., Dumont, M., Palmaerts, B., Adriani, A., Badman, S. V., Bunce, E. J., Clarke, J. T., Connerney, J. E. P., Gladstone, G. R., Greathouse, T., Kimura, T., Kurth, W. S., Mauk, B. H., McComas, D. J., Nichols, J. D., Orton, G. S., Roth, L., Saur, J. and Valek, P. (2018). Jupiter's Aurora Observed With HST During Juno Orbits 3 to 7. J. Geophys. Res-Space Phys., 123 (5). S. 3299 - 3320. WASHINGTON: AMER GEOPHYSICAL UNION. ISSN 2169-9402

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Abstract

A large set of observations of Jupiter's ultraviolet aurora was collected with the Hubble Space Telescope concurrently with the NASA-Juno mission, during an eight-month period, from 30 November 2016 to 18 July 2017. These Hubble observations cover Juno orbits 3 to 7 during which Juno in situ and remote sensing instruments, as well as other observatories, obtained a wealth of unprecedented information on Jupiter's magnetosphere and the connection with its auroral ionosphere. Jupiter's ultraviolet aurora is known to vary rapidly, with timescales ranging from seconds to one Jovian rotation. The main objective of the present study is to provide a simplified description of the global ultraviolet auroral morphology that can be used for comparison with other quantities, such as those obtained with Juno. This represents an entirely new approach from which logical connections between different morphologies may be inferred. For that purpose, we define three auroral subregions in which we evaluate the auroral emitted power as a function of time. In parallel, we define six auroral morphology families that allow us to quantify the variations of the spatial distribution of the auroral emission. These variations are associated with changes in the state of the Jovian magnetosphere, possibly influenced by Io and the Io plasma torus and by the conditions prevailing in the upstream interplanetary medium. This study shows that the auroral morphology evolved differently during the five similar to 2week periods bracketing the times of Juno perijove (PJ03 to PJ07), suggesting that during these periods, the Jovian magnetosphere adopted various states.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Grodent, Denis UNSPECIFIED orcid.org/0000-0002-9938-4707 UNSPECIFIED Bonfond, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Yao, Z. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gerard, J-C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Radioti, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dumont, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Palmaerts, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Adriani, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Badman, S. V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bunce, E. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Clarke, J. T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Connerney, J. E. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gladstone, G. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Greathouse, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kimura, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kurth, W. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mauk, B. H. UNSPECIFIED UNSPECIFIED UNSPECIFIED McComas, D. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nichols, J. D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Orton, G. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Roth, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Saur, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Valek, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-187024
DOI:	10.1002/2017JA025046
Journal or Publication Title:	J. Geophys. Res-Space Phys.
Volume:	123
Number:	5
Page Range:	S. 3299 - 3320
Date:	2018
Publisher:	AMER GEOPHYSICAL UNION
Place of Publication:	WASHINGTON
ISSN:	2169-9402
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HUBBLE-SPACE-TELESCOPE; JOVIAN AURORA; SATELLITE FOOTPRINTS; JANUARY 2014; MAGNETOSPHERE; OVAL; EMISSION; FLUX; NORTHERN Multiple languages Astronomy & Astrophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/18702