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Juno Plasma Wave Observations at Europa

Authors :
W. S. Kurth
D. R. Wilkinson
G. B. Hospodarsky
O. Santolík
T. F. Averkamp
A. H. Sulaiman
J. D. Menietti
J. E. P. Connerney
F. Allegrini
B. H. Mauk
S. J. Bolton
Source :
Geophysical Research Letters, Vol 50, Iss 24, Pp n/a-n/a (2023)
Publication Year :
2023
Publisher :
Wiley, 2023.

Abstract

Abstract Juno passed by Europa at an altitude of 355 km on 29 September, day 272, 2022. As one of Juno's in situ science instruments, the Waves instrument obtained observations of plasma waves that are essential contributors to Europa's interaction with its environment. Juno observed chorus, a band at the upper hybrid frequency providing the local plasma density, and electrostatic solitary structures in the wake. In addition, impulses due to micron‐sized dust impacts on Juno were recorded with a local maximum very close to Europa. The peak electron density near Europa was ∼330 cm−3 while the surrounding magnetospheric density was in the range of 50–150 cm−3. There was a significant separation between the Europa flyby and Juno's crossing of Jupiter's magnetic equator, enabling a unique identification of effects associated with the moon as opposed to magnetospheric phenomena normally occurring at the magnetic equator near 10 Jovian radii.

Details

Language :
English
ISSN :
19448007 and 00948276
Volume :
50
Issue :
24
Database :
Directory of Open Access Journals
Journal :
Geophysical Research Letters
Publication Type :
Academic Journal
Accession number :
edsdoj.0d656c5967c439dbcbe7cd730472026
Document Type :
article
Full Text :
https://doi.org/10.1029/2023GL105775