Radiation spectra of our model with different parameters, where the fiducial case (green solid line) in each panel is the same as that in Figure 1. (a) Different values of α _B are indicated by different dashed lines, i.e., α _B = 0 (black), 0.5 (red), 2 (blue), and 4 (wine). (b) Different values of p are indicated by different dashed lines, i.e., p = 2.5 (black), 3 (red), and 4 (blue). (c) Different values of R _dis are indicated by different dashed lines, i.e., R _dis = 10¹⁴ (black), 3 × 10¹⁴ (blue), 3 × 10¹⁵ (red), and 10¹⁶ cm (gray). (d) Different values of ﹩\gamma {{\prime} }_{{\rm{m}}}={10}^{4}﹩ (blue dashed line), or Y ₀ = 2 (red dashed line), or ﹩t{{\prime} }_{\mathrm{end}}=3﹩ (orange dashed line), or τ _B = 0.001 (magenta dashed line) are adopted.