Spectra of radiation flux from Cygnus X-1. Panel (a) Spectrum in 10⁴ ≤ ϵ ≤ 10¹⁴ eV; panel (b) spectrum in 10⁴ ≤ ϵ ≤ 10⁸ eV; panel (c) spectrum in 10⁹ ≤ ϵ ≤ 10¹³ eV. The color-coding is as follows: •ϕ_i = −π/2, •ϕ_i = 0, •ϕ_i = π/2. The black curves are computed with the typical jet parameters: ρ = 2.8 × 10⁻¹⁵ g/cm³, p = 10⁶ erg/cm³, and $|\overline{B}|={10}^3$ gauss, under different E′_max.