Spectral energy distribution of the input radiation field for G_X = 10 (black line) and the total outward radiation field (continuum and line emission) stopping the model at different A_V (blue line): 0.1, 5, and 30 mag. The two vertical green lines show the energy necessary to create O⁺⁺ and N⁺, two of the ions whose emission is used to constrain the modeling. The dots represent the average observed integrated flux for the filaments surrounding NGC 1275 of 4.0 × 10⁻¹⁶ erg cm⁻² s⁻¹ arcsec⁻² in the 0.6–2.0 keV band (red dot; Walker et al. 2015) and of 5 × 10⁻¹⁵ erg cm⁻² s⁻¹ arcsec⁻² in the 2–10 keV band (magenta dot; Sanders et al. 2005). The orange background highlights the range over which the integrated intensity is calculated to scale G_X.