LOFAR 144 MHz images showing emission at different scales in Mrk 273. Left panel: LoTSS-DR2 image at 30″ resolution shows the low surface brightness large-scale emission, with the northern arc marked. Black cross in the northern arc marks the nearby galaxy 2MFGC 11079 at that location. Middle panel: LoTSS-DR2 image at 6″ resolution, showing the southern arc and ridge in Mrk 273. Right panel: sub-arcsecond image of the nucleus of Mrk 273 at a resolution of 0.3″ × 0.2″. The northern (N), south-eastern (SE), south-western (SW) and diffuse north-east (NE) components are marked. The contour levels in all images are 3 where n = 0,1,2...10. σ_rms is 150 μJy beam⁻¹, 80 μJy beam⁻¹ and 90 μJy beam⁻¹ for the 30″ image, 6″ image and sub-arcsecond image, respectively. The negative contours are marked by dashed lines and are at −3σ_rms level. The beam is drawn with dashed lines in the bottom right corner. Image statistics are summarised in Table 1.