Left panel: histograms of the radial distribution of galaxies with spectroscopic redshifts from GAMA within 7′ (about 1 Mpc) of the host of each radio galaxy and with a spectroscopic redshift within ±0.003 from the redshift of the radio galaxies (z = 0.138). The galaxy distribution in the field of the Exemplar is more concentrated than that in the field of the Double Irony. Right panel: SDSS color-magnitude diagram of the galaxies located within a radius of 1 Mpc of the host of each radio galaxy and with a spectroscopic redshift within ±0.003 from the redshift of the radio galaxies (z = 0.138). Also shown (red star) is the second brightest galaxy located about 1′ to the NE of Double Irony’s host and discussed in Sect. 4.4.2. This galaxy has a redshift that falls just below the selected redshift range and is not included in the Fourier component analysis. Except for the presence of the second bright galaxy near the Double Irony, the distributions are very similar (red squares for Double Irony and blue dots for Exemplar).