Synthetic EUV images of a subregion at AIA 171, 193, and 211 Å  channels. The first column shows the original images from the top view. The second and third columns show the images after subtracting the background. The field of view is the same as the black rectangle in Figure 1(a). An animation that covers the dynamic evolution of 72 minutes starting from t = t₀ is available. The real-time duration is 1.3 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.