Radio maps of the ten new GRQs (this page has numbers 1 to 6) as described in Sect. 2.1. The crimson contour represents the radio emission detected in the NVSS and black contours that from the FIRST survey. The background (blue) colour images are from the Pan-STARRS r band. In the lower-left corner, the beams of the NVSS and the FIRST are shown. The bottom middle of each image shows the angular scale for reference. The numbers in the upper-left corner represent the serial numbers from Table 1. Contour levels are at 3σ × [ − 1, 1, 1.4, 2.0, 2.8, 5.6, 11.2, 22.4] for the NVSS and 3σ × [ − 1, 1.4, 2.0, 2.8, 5.6, 11.2, 22.4] for the FIRST, where dashed contours represent negative values. The typical σ values for the FIRST and the NVSS are 0.15 and 0.45 mJy beam⁻¹, respectively.