SEDs of W49B with model curves for the hadronic-dominant scenario. The upper and lower panels show (a1–3) and (a4–6), respectively (see Table 2). The red diamonds, red circles, and magenta squares represent observed data in the radio (Moffett & Reynolds 1994), LAT, and H.E.S.S. bands, respectively. The radio emission is explained by the synchrotron radiation from the relativistic electrons. The γ-ray emission canbe decomposed into π⁰-decay (dotted line), bremsstrahlung (dashed line), and IC scattering (dot-dashed line). The solid line represents the total flux of the components. The cases (a1)/(a4), (a2)/(a5), and (a3)/(a6) are represented by cyan, blue, and green lines, respectively,in the upper/lower panel. The decomposed emissions are shown for the cases (a2) and (a5) in the upper and lower panels, respectively.