mpacts of corotation on Exoplanets Magnetosphere Energy

In this study, we investigate how planetary corotation influences energy dissipation in the magnetosphere-ionosphere system of planets. Using SWMF magnetohydrodynamic simulations, we demonstrate that tidally locked exoplanets have a higher cross-polar cap potential compared to fast-rotating planets with the same magnetic field strength. This finding is consistent with earlier results obtained using the GAMERA MHD code. Our research shows that, for a given interplanetary magnetic field, increasing the corotation speed leads to a linear decrease in the cross-polar cap potential (CPCP). Furthermore, we observe that variations in corotation have a minimal impact on the CPCP for Earth-sized planets. These results suggest that both corotation dynamics and planetary size are essential for understanding how exoplanets interact with their stellar environment.