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Fig. 11

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Displacement and rotation of the runaway sunspot are shown in the top and bottom panels, respectively, after separation from its host area around 16:00 UT on July 2. In the bottom panel the continuum images at two different instances along the steep part of the plot are shown. The thin white lines mark the umbra-penumbra boundary retrieved from fitting an ellipse to the observed contour and the white pluses represent the centre positions of the ellipses.

This figure is made of several images, please see below:

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