Top: narrow (white) and broad (yellow) extraction regions for surface brightness profiles in the northern outskirts. The dashed contour is the northern relic in the GMRT 325 MHz image at the 3σ_rms level. Bottom: surface brightness profiles and their best-fit model in the narrow and broad regions. The bridge and the surface brightness jump are located at r = 23″ and r = 108″, respectively. The GMRT 325 MHz profile is plotted with a dashed curve, the outer edge of which is associated with the potential X-ray jump.