Long-term cooling accounting for magnetic effects

The internal structure of a self-gravitating object with a given mass and chemical composition can be obtained through the knowledge of the equation of state with standard methods.

We aim at an organic description of the long-term evolution by connecting dynamo simulation with a given structure, to its long-term expected evolution. We mostly focus on the evolution of gas giants, where the Ohmic dissipation can play a very important role in inflating their radii, as it is seen in data.

Within that, we also study the magnetic induction in the Hot Jupiters ionized atmosphere, as a result of the strong thermal winds. We are obtaining new important results which support the presence of strong magnetic fields, with possible implication for the long-term evolution mentioned above, and the radio emission. On the other hand, we perform dynamo simulations corresponding to different stages of the planetary evolution.

MESA code used for the long-term evolution coupled with dynamo fields: https://github.com/danielevigano/mesa_ohmic_hj

Supercomputational resources awarded by the Spanish Network of Supercomputers:

  • AECT-2025-2-0017, “3D MHD dynamo in Hot Jupiters at different orbital distances”, 3.041 Mhr in BSC, PI AEL
  • AECT-2024-2-0026, “MHD simulations of Hot Jupiters atmospheres, part II: winding and local turbulence with background profiles from state-of-the-art global circulation models.”, 1.756 Mhr in BSC, PI CSG
  • AECT-2024-2-0003, “Global High-Resolution simulations of stellar dynamos: the effect of tidal star-planet interaction”, 5.073 Mhr in BSC, PI FdS
  • AECT-2024-2-0011, “3D MHD dynamo in Hot Jupiters at different evolutionary time”, 2.322 Mhr in BSC, PI AEL
  • AECT-2023-2-0013 “MHD simulations of Hot Jupiters atmospheres: winding and turbulence”, 1.7 Mhr in BSC, PI: DV
  • AECT-2023-2-0034 “Global High-Resolution simulations of stellar dynamos: the effect of tidal star-planet interaction”, 4.3 Mhr in SCAYLE, PI: FDS

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