As in Figure 5, but for two Alfvén waves launched symmetrically and out-of-phase (φ = π) in both hemispheres. The Alfvén waves interact in the equatorial region (panels (B)/(C)/(D)) and alter the fast wave generation. We provide an animated version of this figure in the article. It is also available via YouTube as supplementary material. The animation shows the evolution of the magnetic fields (left animation panel) and electric fields (right animation panel) during times ct/R _* = 0 to 16.79; the real-time duration of the animation is 7.5 s.

(An animation of this figure is available in the online article.)

(An animation of this figure is available.)

The video/animation of this figure is available in the online journal.