Convectively Coupled Equatorial Trapped Waves in Stars and Planets

In this paper, we have studied convectively coupled equatorially trapped waves in rotating stars, with and without magnetic fields. The equatorial hydrodynamic magnetohydrodynamic Poincaré, Rossby, mixed Rossby–Poincaré, Kelvin were identified. effects of stratification nontraditional Coriolis force terms been investigated. When the flow is strongly stratified, wave frequencies model are almost same as those a shallow-water model. However, when weakly constrained by buoyancy frequency. affect widths phases waves. width increases an increasing parameter. Phase shift occurs parameter included. effect significant field strong. We applied solar atmosphere tachocline to explain Rieger-type periodicities. For atmosphere, taken into account, find that should be smaller than 5 G photosphere. Otherwise, periodicities can only attributed long Rossby tachocline, 50 kG observe 160 day Rieger period. addition, not obvious photosphere, but its on significant.