Upper panel: Lagrangian perturbation of the temperature for three modes of each of the models of Fig. 7. These modes have periods between 880–1130s and are excited by ∈ mechanism in the inner region (− log(1 − m_r/M_⋆) ~ 0.2). Blue (red) lines correspond to the modes of the model HG (LG). Lower panel: Running work integral for the same models is shown. The quantities W and δT/T are normalized to have the radius perturbation at the surface δr/R = 1. In the lower panel the running work integral is normalized arbitrarily for each model to be able to plot them in the same panel.