Fig. 3.

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Extraction regions of surface brightness profiles across the X-ray cavities of Hercules A. The rectangular white regions were used to extract the surface brightness profiles perpendicular and parallel to the radio axis, and are shown along with their labels. The solid black polygons encompass the cavity-related bins in each region. The dashed black rectangles mark the bin of the maximum deficit. The solid green line is aligned with the radio axis, where centers of the central bins of perpendicular cuts are positioned. The dashed green line, where the centers of the central bins of the parallel cuts is positioned, is perpendicular to the solid line. The cyan contour from the 1.4 GHz ABC-configurations VLA is at 3σrms = 0.3 mJy/beam.
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