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Fig. 7.

image

Temporal evolution of the loop intensity. Panels a and b: snapshots in the AIA 171 Å channel and the IRIS slit-jaw images at 1400 Å. The field of view is the same as in Fig. 1, but here we use a logarithmic scaling of the intensities. The apex region of the loop under investigation here is indicated by the boxes in panels a and b. Panel c: intensity integrated over the box in the two channels. The vertical blue line shows the time of the snapshots in panels a and b. The black vertical line in panel b is the spectrograph slit, the black feature at the bottom left edge of the box in panel b is an artifact on the detector. An animation showing the temporal evolution while the slit is passing the loop is available online. See Sect. 4.4.

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