Titre : Background/residual decomposition for the magnetic field in MHD simulations using a time-dependent B0 - application to Saturn-like and Uranus-like magnetospheres

Oratrice : Léa Griton

Résumé : I present the numerical method of magnetic field splitting in MHD simulations.
I’ll present briefly, as an example, our adaptation to the MPI-AMRVAC code to allow for any possible orientation of spin and magnetic axis using a background/residual decomposition of the magnetic field. MHD equations have been rewritten to allow time-dependent (and possibly non-potential) background magnetic field.
The Saturn-like and Uranus-like cases are briefly discussed.