10.5281/zenodo.7628719
https://zenodo.org/records/7628719
oai:zenodo.org:7628719
Duling, Stefan
Stefan
Duling
0000-0001-7220-9610
Institute of Geophysics and Meteorology, University of Cologne, Cologne, Germany
Saur, Joachim
Joachim
Saur
0000-0003-1413-1231
Institute of Geophysics and Meteorology, University of Cologne, Cologne, Germany
Clark, George
George
Clark
0000-0002-5264-7194
The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, USA
Allegrini, Frederic
Frederic
Allegrini
0000-0003-0696-4380
Southwest Research Institute, San Antonio, Texas, USA
Greathouse, Thomas
Thomas
Greathouse
0000-0001-6613-5731
Southwest Research Institute, San Antonio, Texas, USA
Gladstone, Randy
Randy
Gladstone
0000-0003-0060-072X
Southwest Research Institute, San Antonio, Texas, USA
Kurth, William
William
Kurth
0000-0002-5471-6202
Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa, USA
Connerney, John E. P.
John E. P.
Connerney
0000-0001-7478-6462
NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
Bagenal, Fran
Fran
Bagenal
0000-0002-3963-1614
Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, Colorado, USA
Sulaiman, Ali H.
Ali H.
Sulaiman
0000-0002-0971-5016
School of Physics and Astronomy, Minnesota Institute for Astrophysics, University of Minnesota, Minneapolis, Minnesota, USA
MHD Model of Ganymede's Magnetosphere: Predicted magnetic field on Juno's trajectory
Zenodo
2023
Juno
Ganymede
Magnetosphere
MHD Model
Magnetic Field
2023-02-10
10.1029/2022GL101688
10.5281/zenodo.7105334
10.5281/zenodo.7096938
10.5281/zenodo.7628718
https://zenodo.org/communities/eu
Creative Commons Attribution 4.0 International
This dataset contains model results from a magnetohydrodynamic (MHD) model of Ganymede's magnetosphere adapted to Juno's PJ34 flyby in 2021. Here we publish predicted magnetic field components on Juno's trajectory that can be compared to MAG measurements and are displayed in Figure 3 of Duling et al. (2022).
Each file contains data from one model. The dataset includes all models with parameter variations from Duling et al. (2022). These are summarized in Table 1 of Duling et al. (2022) and displayed in Figure 3 with the gray lines.
If not varied, all models are run with the following parameters:
Upstream Jovian background magnetic field B0 = (−15,24,−75) nT
Upstream plasma velocity v0 = 140 km/s
Upstream plasma mass density \(\rho\)0 = 100 amu/cm3
Upstream plasma thermal pressure p0 = 2.8 nPa
Ionization frequency \(\nu_{ion}\) = 2.2e-8/s
Atmospheric surface mass density \(n_{n,0}\) = 8e6/cm3
Dipole Gauss coefficient \(g_1^0\) = −716.8 nT
The published data files correspond to the following models with each one parameter variation:
Parameter
Value
Filename Suffix
default model
-
default
Upstream Jovian background magnetic field (measured before flyby)
B0 = (−16,3,−70) nT
B0before
Upstream Jovian background magnetic field (measured after flyby)
B0 = (−14,43,−80) nT
B0after
Upstream plasma velocity (min)
v0 = 120 km/s
v-
Upstream plasma velocity (max)
v0 = 160 km/s
v+
Upstream plasma mass density (min)
\(\rho\)0 = 10 amu/cm3
rho-
Upstream plasma mass density (max)
\(\rho\)0 = 160 amu/cm3
rho+
Upstream plasma thermal pressure (min)
p0 = 1.0 nPa
p-
Upstream plasma thermal pressure (max)
p0 = 5.0 nPa
p+
Ionization frequency (min)
\(\nu_{ion}\) = 0.5e-8/s
prod-
Ionization frequency (max)
\(\nu_{ion}\) = 10.0e-8/s
prod+
Atmospheric surface mass density (min)
\(n_{n,0}\) = 1.6e6/cm3
nn-
Atmospheric surface mass density (max)
\(n_{n,0}\) = 40e6/cm3
nn+
Dipole Gauss coefficient (min)
\(g_1^0\) = −702.5 nT
dipole-
Dipole Gauss coefficient (max)
\(g_1^0\) = −731.1 nT
dipole+
Magnetic Field components and Juno's position are in GPhiO system. GPhiO is defined by the primary direction z parallel to Jupiter’s rotation axis, the secondary direction y is pointing from Ganymede's towards Jupiter's barycenter and x completes the right-handed system approximately in direction of plasma flow.
Columns:
Spacecraft time [UTC]
Bx modeled magnetic field in GPhiO [nT]
By modeled magnetic field in GPhiO [nT]
Bz modeled magnetic field in GPhiO [nT]
B modeled magnetic field magnitude [nT]
x of Juno in GPhiO [km]
y of Juno in GPhiO [km]
z of Juno in GPhiO [km]
European Commission
10.13039/501100000780
884711
Searching and Characterizing Extraterrestrial Subsurface Oceans