Universität zu Köln

Duling, Stefan ORCID: 0000-0001-7220-9610, Saur, Joachim, Clark, George, Allegrini, Frederic, Greathouse, Thomas, Gladstone, Randy ORCID: 0000-0003-0060-072X, Kurth, William ORCID: 0000-0002-5471-6202, Connerney, John E. P., Bagenal, Fran ORCID: 0000-0002-3963-1614 and Sulaiman, Ali H. (2022). Ganymede MHD Model: Magnetospheric Context for Juno's PJ34 Flyby. Geophys. Res. Lett., 49 (24). WASHINGTON: AMER GEOPHYSICAL UNION. ISSN 1944-8007

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Abstract

On 7 June 2021 the Juno spacecraft visited Ganymede and provided the first in situ observations since Galileo's last flyby in 2000. The measurements obtained along a one-dimensional trajectory can be brought into global context with the help of three-dimensional magnetospheric models. Here we apply the magnetohydrodynamic model of Duling et al. (2014, https://doi.org/10.1002/2013ja019554) to conditions during the Juno flyby. In addition to the global distribution of plasma variables we provide mapping of Juno's position along magnetic field lines, Juno's distance from closed field lines and detailed information about the magnetic field's topology. We find that Juno did not enter the closed field line region and that the boundary between open and closed field lines on the surface matches the poleward edges of the observed auroral ovals. To estimate the sensitivity of the model results, we carry out a parameter study with different upstream plasma conditions and other model parameters.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Duling, Stefan UNSPECIFIED orcid.org/0000-0001-7220-9610 UNSPECIFIED Saur, Joachim UNSPECIFIED UNSPECIFIED UNSPECIFIED Clark, George UNSPECIFIED UNSPECIFIED UNSPECIFIED Allegrini, Frederic UNSPECIFIED UNSPECIFIED UNSPECIFIED Greathouse, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Gladstone, Randy UNSPECIFIED orcid.org/0000-0003-0060-072X UNSPECIFIED Kurth, William UNSPECIFIED orcid.org/0000-0002-5471-6202 UNSPECIFIED Connerney, John E. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bagenal, Fran UNSPECIFIED orcid.org/0000-0002-3963-1614 UNSPECIFIED Sulaiman, Ali H. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-692546
DOI:	10.1029/2022GL101688
Journal or Publication Title:	Geophys. Res. Lett.
Volume:	49
Number:	24
Date:	2022
Publisher:	AMER GEOPHYSICAL UNION
Place of Publication:	WASHINGTON
ISSN:	1944-8007
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MAGNETIC-FIELD; AURORA Multiple languages Geosciences, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/69254