pub fn dc_high_freq_suppression(x: f64) -> f64Expand description
High-frequency suppression factor for DC emission.
H_dc^pl(x) ≈ exp(-2x) [1 + 3x/2 + 29x²/24 + 11x³/16 + 5x⁴/12]
This accounts for the suppression of DC emission at high photon energies where the soft-photon approximation breaks down.
Reference: Chluba & Sunyaev (2012), Eq. 13.