https://orcid.org/0000-0003-1853-4900
Left: broad-band SED of the Fornax A lobes. Data points (Table 1) are shown by dots. Emission components are: synchrotron, short/long-dashed curves; Compton/CMB, dotted–long-dashed curves; Compton/IR, long-dashed curves; Compton/OPT, solid curves; pionic, dotted curve. Thinner curves depict secondary-electron emissions. Right: short-dashed curves bracket the 95 per cent confidence level of the predicted Compton/OPT emission.
In our paper ‘Non-thermal emission in the lobes of Fornax A’ (Persic & Rephaeli 2019) the dilution factor of the cosmic IR background (CIB) was incorrectly specified to be CCIB = 10−6.724 (section 2.1). The correct value is CCIB = 10−5.629: in the revised Fig. (1)-left shown here the updated Compton/FIR curves are correspondingly higher. Our main conclusion, namely that all the observed Fermi-LAT emission from the lobes of Fornax A can be accounted for by energetic electrons scattering off the ambient optical radiation field, is unaffected by this correction.
