Radio/X-ray/optical comparison. Top panels: Optical (VLT Survey Telescope gri; Merluzzi et al. 2015) and X-ray (0.2–2.3 keV eROSITA All-Sky Survey (eRASS), blue; Bulbul et al. 2024; Kluge et al. 2024, Sanders et. al. in prep.) composite images of A3528N (left), A3528S (centre), and A3532 (right) with uGMRT Band 3 radio contours (white) drawn at 4σ_rms × [2, 4, 8, 16, 36, 128, 256]. To emphasise the X-ray features, we also overplot the contours of the unsharped Gaussian gradient magnitude filtered image (Sanders et al. 2016) at [3,6,20] × 10⁻⁶ photons cm⁻² s⁻¹ levels (light blue). Bottom panels: Residual X-ray images after subtracting a standard β-model (Cavaliere & Fusco-Femiano 1976). The radio contours are from the uGMRT Band 3 taper=10″ image (beam in the bottom left corners), at the 4σ_rms × [1, 2, 4, 8, 16, 36, 128, 256] levels.