As Fig. 6, but for model D. The diffuse X-ray emission observed by Chandra is produced by the hot spots, but we assume that the lobes exist, and emit 2.8 mJy flux density at 144 MHz. We then study the parameters that a 20 kpc lobe must have in order to produce the radio, but not the observed X-rays. The hot spots have the same parameters as in Fig. A.2 and are given in Table 2, together with those adopted for the lobes.