Radio continuum spectra and best-fit ageing model along the stripped tail of MRK0057. Data points show observed flux densities, and the solid black line shows the best-fit (median) ageing model along with the 84, 95, and 99.7% credible regions (shading). Error bars on flux densities are determined following the procedure outlined in Sect. 3, and error bars on the frequency axis correspond to the bandwidth of the observing band. If significant (>3σ) flux density is not detected in an aperture, we show 3σ upper limits. We list the best-fit break frequency (v_b) as well as the distance along the stripped tail (ℓ) in each panel.