Detection of E-W depressions in PLCKG287. Left panel: azimuthal SB profile around the cluster center extracted along the wedges shown in the middle panel. The largest deficit is in the direction of the E depression seen in the residual and unsharp images (see Fig. 4). A second dip is visible in the azimuthal profile in the direction of the W depression. Angles are measured counterclockwise, with 0° to the West direction, and are shown starting from −90° to improve the visibility of the West deficit in the plot. Middle panel: background-subtracted, exposure-corrected mosaic [0.5–7.0] keV Chandra image, smoothed with a kernel of 8 pixels, of the central region of PLCKG287. The elliptical wedges used to evaluate the azimuthal SB profile around the center were chosen so as to mostly encompass the region of each depression (elliptical annulus between 10″ and 45″ along the major axis, divided in 12 sectors of 30° each) and are shown in green panda regions. The dashed black ellipses show the identified X-ray depressions (see also Fig. A.1). Right panel: SB profiles extracted in 5″-wide annular bins (with the same geometry as that used for the elliptical β-model; see Fig. A.1) in four sectors to the N (blue), E (yellow), S (green) and W (red) directions. With respect to the SB profiles in orthogonal directions, a clear depression is visible in the E profile in the radial range ≈0.25′–0.75′, and a smaller deficit is noticeable in the W profile in the radial range ≈0.4′–0.6′. The radial distances are indicated along the major axis, in units of arcmin (1 arcmin = 313.8 kpc).