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Fig. 7


Averages of the flow velocities of the active region AR 12007 shown in Fig. 6. We show averages of vφ along a strip in longitude (top) and of vθ along a strip in latitude (bottom). Both strips are 15° wide and centered around the center of gravity of the unsigned magnetic field of the active region (see dashed lines in Fig. 6). The shaded areas show the flow velocities with the width corresponding to the standard deviation of the velocity over five consecutive 24 h averages of the flow velocities for the individual Carrington rotations. The dashed lines show the averaged unsigned magnetic field. Blue: CR 2147, red: CR 2148. The dashed vertical lines indicate the position of the center of gravity of the unsigned magnetic field (derived from the data of CR 2148).

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