Overview of oscillating loops and their temporal evolution. Panel a: a representative full-disk image of the Sun highlighting the location of our event by the red rectangular box. Images of this boxed region from 171 Å, 193 Å, and 211 Å channels are presented in panels b–d respectively. Straight blue lines in each panel mark the locations of the three artificial slits (S1, S2, S3), which were used to generate the space-time (XT) maps. Generated XT maps are shown in panels e–m. Two vertical dotted lines in every panel mark the onset time of the two flares.