Comparison of the various terms in the energy balance equation (Eq. (2)) in models with T₀ =  9000 K and two values of the injected wave energy flux: (a) ⟨π⟩= 0.1 W m⁻² and (b) ⟨π⟩= 30 W m⁻². The solid black line corresponds to the wave heating rate, the dot-dashed blue line denotes radiative losses, and the dashed red line represents the thermal conduction term. Only a close-up view of the central part and the PCTR of the thread are displayed.