Radial velocity v_r and temperature fluctuations T_fluc. As both quantities have larger amplitudes at the outer parts of the model (see further Sect. 4.5) they have been scaled with the corresponding horizontal root-mean-square value at each radius r to ease the visualization. Both panels also show a magnification of the core region. The shown snapshot is taken at t ∼ 580 h. There is also a movie available on https://zenodo.org/record/3819569.