Radiation spectra of our model with different f _B, i.e., f _B = 0 (black), 10⁻⁴ (magenta), 10⁻³ (cyan), 10⁻² (green), and 10⁻¹ (wine), where L _obs = 10⁵²erg s⁻¹, R _dis = 10¹⁵ cm, p = 3.5, α _B = 1, ﹩{\gamma }_{{\rm{m}}}^{{\prime} }=3\times {10}^{3}﹩, and z = 1 are taken. In this figure, the Band radiation spectrum with E _p = 400 keV, α = −1, and β = −2.3 (gray solid line) and the power-law spectra with spectral index ﹩\hat{{\rm{\Gamma }}}=1/3﹩ (gray dotted line) or ﹩\hat{{\rm{\Gamma }}}=-1/2﹩ (gray dashed–dotted line) are also shown for comparison.