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A new physical model of the electron radiation belts of Jupiter inside Europa's orbit
Author(s) -
Né Q.,
Sicard A.,
Bourdarie S.
Publication year - 2017
Publication title -
journal of geophysical research: space physics
Language(s) - English
Resource type - Journals
eISSN - 2169-9402
pISSN - 2169-9380
DOI - 10.1002/2017ja023893
Subject(s) - physics , jupiter (rocket family) , flux (metallurgy) , orbit (dynamics) , van allen radiation belt , pitch angle , spacecraft , electron , astronomy , aerospace engineering , magnetosphere , nuclear physics , plasma , materials science , engineering , metallurgy
A new global physical model of the electron radiation belts of Jupiter inside the orbit of Europa is presented. It is an update of the Office National d'Etudes et de Recherches Aérospatiales model Salammbô proposed by Sicard and Bourdarie ([Sicard, A., 2004]) that now integrates a contribution of the wave‐particle interaction above the orbit of Io. In addition, a revisited and more realistic boundary condition near Europa is implemented. The new Salammbô model is validated against the in situ flux measurements obtained by the Pioneer 10, Pioneer 11, and Voyager 1 missions. The role of the wave‐particle interaction is discussed by investigating its effect on the predicted in situ fluxes. In particular, the interaction appears in our simulations as a strong pitch angle scattering process explaining the flux depletions intensities near the orbit of Io as well as the flux intensities near the spacecraft perijoves.