Synthetic glitch period 𝒢_gl and phase Φ_gl computed with ADIPLS. The MESA models are computed with the reference input physics listed in Table 1. (a) Dependence of the modulation period 𝒢_gl on the stellar mass as a function of Δν during the RGB. The mass in solar units is shown with different shades of grey. (b) Same as (a), but for 𝒢_gl as a function of T_eff. (c) Evolution of the modulation phase Φ_gl with Δν for models of initial mass 0.9 M_⊙ at solar metallicity, with an emphasis on the evolutionary stage. The labelling is identical to that in Fig. 4. (d) Same as (c), but for models of initial mass 1.5 M_⊙.