Fig. 7.
Panel a: area asymmetry maps in the interval [30.8, 35.2] min. The axes are in pixel scale (scaling: 0.135″ × 0.1875″). The red (blue) contour is for the negative (positive) patch. Asterisks represent border pixels whose area asymmetry values are plotted in panel b. Panel b: variation of area asymmetry values for border positive polarity pixels next to the PIL. The evolution of normalized line core intensity along the PIL is shown in green. The horizontal line represents zero on the area asymmetry axis.
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