Universität zu Köln

Allegrini, F., Kurth, W. S., Elliott, S. S., Saur, J., Livadiotis, G., Nicolaou, G., Bagenal, F., Bolton, S., Clark, G., Connerney, J. E. P., Ebert, R. W., Gladstone, G. R., Louarn, P., Mauk, B. H., McComas, D. J., Sulaiman, A. H., Szalay, J. R., Valek, P. W. and Wilson, R. J. (2021). Electron Partial Density and Temperature Over Jupiter's Main Auroral Emission Using Juno Observations. J. Geophys. Res-Space Phys., 126 (9). WASHINGTON: AMER GEOPHYSICAL UNION. ISSN 2169-9402

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Abstract

We present a survey of electron partial densities (i.e., the portion of the total density measured between similar to 0.05 and 100 keV) and temperatures in Jupiter's main auroral emission region using plasma measurements from the Jovian Auroral Distributions Experiment (JADE) on Juno. The electron partial density increases from similar to 0.01 or 0.1 cm(-3) near the main oval to a few cm(-3) at the edge of the measurable part of the UV emission equatorward of the main oval. The electron temperature is highest near the main oval at similar to 10-20 keV and decreases equatorward down to similar to 0.3-2 keV. The JADE electron partial density agrees within a factor of similar to 2 with the total electron densities derived from Juno-Waves when the comparison is possible. The electron density and temperature trends are consistent for all sampled longitudes, for the north and the south, and there is no significant trend with radial distance in the range examined in this study (1.25-1.96 R-J). The electron density is anti-correlated with the temperature and the characteristic energy. The ratio of the magnetic field strength to the electron density is maximum near the main oval.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Allegrini, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kurth, W. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Elliott, S. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Saur, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Livadiotis, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nicolaou, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bagenal, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bolton, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Clark, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Connerney, J. E. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ebert, R. W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gladstone, G. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Louarn, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mauk, B. H. UNSPECIFIED UNSPECIFIED UNSPECIFIED McComas, D. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sulaiman, A. H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Szalay, J. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Valek, P. W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wilson, R. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-602084
DOI:	10.1029/2021JA029426
Journal or Publication Title:	J. Geophys. Res-Space Phys.
Volume:	126
Number:	9
Date:	2021
Publisher:	AMER GEOPHYSICAL UNION
Place of Publication:	WASHINGTON
ISSN:	2169-9402
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MAGNETIC-FIELD; ALFVEN WAVES; MAGNETOSPHERE; ACCELERATION; REGION; FLUX Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/60208