Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p51d1468b&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #P51D-1468
Astronomy and Astrophysics
Astrophysics
[3255] Mathematical Geophysics / Spectral Analysis, [3270] Mathematical Geophysics / Time Series Analysis, [6994] Radio Science / Instruments And Techniques, [7524] Solar Physics, Astrophysics, And Astronomy / Magnetic Fields
Scientific paper
Numerous works have been published developing theoretical models for the structure of the Jovian core. The most recent complete model in the literature is that of Gudkova and Zharkov (1999), which detailed several models varying in both their core molecular-metallic phase transition pressure levels and core mass. It was the hope of the authors that the models would be used, ``as soon as relevant observations are performed'' for identifying modes and improving the models. Thus far, this does not seem to have happened, although it is clear that work is ongoing with such instruments as SYMPA and the Juno orbiter. We attacked this problem in the vein of Thomson, Maclennan, and Lanzerotti (1995), analyzing measurements of magnetic field and high-energy particles from the Jovian close-approach time periods of both Voyager II and Ulysses. The comparison between the predicted mode frequencies and the signatures in the spectra of the measurements of the two spacecraft show a number of high-probability matches to model frequencies. Additionally, there are observed frequencies and splittings that are not explained by the model, and it is our hope that these findings will spur further work in the field, improving the model(s) to match the experimental findings.
Burr W.
Thomson David J.
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