EGU25-20060, updated on 15 Mar 2025
https://doi.org/10.5194/egusphere-egu25-20060
EGU General Assembly 2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Geometric Considerations in Hot Jupiter Magnetic Drag Models
Duncan Christie
Duncan Christie
  • Max Planck Institute for Astronomy, APEx, Germany (christie@mpia.de)

Magnetic fields are expected to influence the atmospheric dynamics of hot and ultra-hot Jupiters; however, due to the disparate conditions between the day and night sides, modelling their impact can be difficult.  To make the problem tractable, interactions with the magnetic field are often reduced to the inclusion of a magnetic drag term.  In this talk,  I will demonstrate the impact of vertical and meridional drag from a background dipole magnetic field on the flows in hot Jupiter atmospheres and show that the inclusion of meridional and vertical drag can limit flows over the poles and create a relatively static dayside hot spot around the substellar point, something not seen in models that only consider zonal drag.



How to cite: Christie, D.: Geometric Considerations in Hot Jupiter Magnetic Drag Models, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-20060, https://doi.org/10.5194/egusphere-egu25-20060, 2025.