Comparison of model spectral index distributions using nonthermal electron injection functions with different γ_inj, max. Distributions with different colors represent different values of γ_inj, max. For all distributions, the magnetic field strength was assumed to be B_i = 0.3G. As γ_inj, max increases, the spectral index distributions converge and there is little change between the models with γ_inj, max = 10^4.5 and γ_inj, max = 10⁶.