Sun

The recent observations of Rossby waves by Löptien et al., 2018 caused quite a stir in the solar physics community and a renewed interest in inertial waves. Subsequent observations of High Frequency Retrograde (HFR) vorticity waves by Hanson et al., 2022 raised a question of whether they are related to any theoretical known waves. We used the linear MHD code Kore to compute inertial eigenmodes of spherical shells and found that the aspect ratio of the solar convective shell r_i/r_o = 0.71, both sets of eigenmodes matched rather well with the observations. What is surprising is that our model did not have any density stratification, unlike the Sun.