Left: integrated radio spectra of the entire halo and its subregions. The solid and dash-dotted lines show fitted power-law and double power-law spectra, respectively. The radio spectrum of the halo is described by a power-law between 150 MHz and 3 GHz. Unlike the entire halo, its subregions show different spectra also featuring high frequency spectral steepening. Right: flux density of the entire halo was extracted from the blue region, labeled as halo. Green regions were used to extract the flux density from the halo subregions. The blue annuli are used to compute the radio and X-ray surface brightness profiles. These annuli have widths of 15″, similar to the radio beam size.