Sketch of the Alfvén wing and its associated dissipation region for idealized stellar wind properties in a frame of reference rotating with the central body. The idealized orientations of the vector fields in the sketch resemble the situation when the radius of the star R_⋆ is much larger than the effective radius of the extra solar planet R_eff and the angular velocity of the star, the radial distance of the extra solar planet and the stellar wind velocity obey Ω_⋆r_exo/v_sw ≪ 1. The sketch displays the wing at time t and also indicates the time-variability of the wing in the rotating frame. At time t the extra solar planet is situated at a location marked with a brown circle. The extra solar planet in this frame of reference was located at earlier times t − Δt further to the right. The extra solar planet steadily launches Alfvén waves, which travel parallel to B₀. The superposition of the wave packets launched at earlier times results in the snapshot of the wing at time t displayed here.