NGC 5055. Panel a: RC emission at 144 MHz, as derived from the LOFAR HBA observations. The intensities were converted into a map of the radio Σ_SFR map, using the 1.4 GHz relation of Condon scaled with a radio spectral index of −0.8. This map is shown at a logarithmic stretch ranging from 10⁻⁴ to 3 × 10⁻¹ M_⊙ yr⁻¹ kpc⁻². Panel b: same as panel a, but using a 1365 MHz map from WSRT–SINGS. Panel c: hybrid Σ_SFR map, derived from a linear superposition of GALEX 156 nm FUV and Spitzer 24 μm MIR emission, presented as inverted heat colour scale. Panel d: ratio of the LOFAR (Σ_SFR)_RC map divided by the hybrid (Σ_SFR)_hyb map. The map is shown at logarithmic stretch using the heat colour scale ranging from 10^−0.6 to 10^1.6. Areas that are light are radio bright, whereas dark areas are radio dim when compared with the hybrid Σ_SFR map. All maps have been convolved to a circular Gaussian beam with a resolution of 19.1 × 19.1 arcsec². The representation of the beam is shown in the bottom left corner of each panel. Panel a–c show unmasked maps, whereas panel d shows the area after masking background sources and the AGN-contaminated central area. In all panels, a 3σ cut-off has been applied.