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Department of Applied Mathematics and Theoretical Physics

Recent studies indicate that circumstellar disks exhibit weak turbulence, with their dynamics and evolution being primarily influenced by magnetic winds. However, most numerical studies have focused on planet-disk interactions in disk models with prescribed turbulence. In this presentation, I aim to explore the complex interactions between a massive planet and a magnetized wind-driven accretion disk via high-resolution 3D global non-ideal magneto-hydrodynamic (MHD) simulations, using the GPU-accelerated code IDEFIX. In particular, I will focus on the orbital and eccentricity evolution of the planet, as well as the back-reaction of the planet on the gas behavior and the wind dynamics. I will show that slow outward migration and eccentricity growth appear to be common outcomes of planet-disk-wind interactions, which may contribute significantly to both the long orbital periods and the moderate eccentricities of warm Jupiters. Additionally, eccentric massive protoplanets embedded in circumstellar disks could play a role in generating structured outflows.

Further information

Time:

19Oct
Oct 19th 2026
16:00 to 17:00

Venue:

MR14 and online

Speaker:

Gaylor Wafflard-Fernandez (Grenoble)

Series:

DAMTP Astrophysics Seminars