Fig. 3.
Panels a–d: running-difference images in 171 Å, where blue (red) color represents intensity enhancement (weakening). The slice (S1) is used to investigate the loop oscillation. Panels e–g: close-ups of the filament in 171, 193, and 211 Å. The slice (S2) is used to investigate the filament oscillation. Panel h: HMI LOS magnetogram associated with the filament. The field of view of each panel is 90″ × 60″.
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