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Jupiter auroral emissions : statistical distribution of radio sources

Auteur

LOUIS Corentin

Institution

IRAP

Thème

Theme3
Auteur(s) supplémentaire(s)L. Lamy, P. Zarka, S. L. G. Hess, R. Prange?, M. Imai, W. S. Kurth

Abstract

The Jovian high latitude radio emissions produced by Jupiter's magnetosphere extend from a few kHz to 40 MHz. There are composed of several components : the broadband kilometric (bKOM) who lies into the frequency range [23–400] kHz, the hectometric (HOM) in the range[400– 3000] kHz and the decametric (DAM) in the range [3000–40000] kHz. The DAM emissions are divided in two : the emissions induced by the satellites Io (Bigg 1964), Europa and Ganymede (Louis et al., 2017) and the emissions not controlled by the satellites. In this study we are interested in the position of the bKOM, HOM and DAM (non-sat) sources. We have pick up all the possible sources, crossed by Juno during perijoves (#1-#11). This allowed us to map the radio sources, as well as associated magnetic field lines, over the entire frequency range covered by Juno/Waves (50Hz-40MHz). The comparison with magnetic field models revealed that all components seem to be on the same magnetic field lines, at different altitudes. The comparison with UV images (Juno/UVS and Hubble/STIS) revealed a
correlation between the UV emission of the main oval and the identified radio sources (kilometric, hectometric and decametric).


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