Multiwavelength modeling of the SNR spectrum in the leptonic scenario. The radio points are extracted from Dickel et al. (2000), the ROSAT and the H.E.S.S. upper limits come from Kassim et al. (1993) and H.E.S.S. Collaboration et al. (2018) respectively. Left: parameters are free to vary, and the values are E_b = 600 GeV, E_max,e = 1 TeV, E_max,p = 1 TeV, W_p = 5 × 10⁴⁹ erg, and K_e−p = 0.5. The spectral index of the electrons before and after the break is Γ_e,1 = 1.8 and Γ_e,2 = 2.8, respectively. Right: same as in the left panel, but with values consistent with the magnetic field: E_b = 1.9 TeV, E_max,e = 2.3 TeV, and E_max,p = 2.7 TeV.