Total intensity radio contours at 1.2 GHz with the VLA in DnC configuration after subtraction of discrete sources. The image has an FWHM of 30 × 30. The contour levels are drawn at  − 3 × 10^-4 Jy/beam, 3 × 10^-4 Jy/beam, and the rest are spaced by a factor . The sensitivity (1σ) is 1 × 10^-4 Jy/beam. Crosses indicate the positions of the subtracted discrete sources. The contours of the radio intensity are overlaid on the Chandra X-ray image shown in Fig. 1.