Fundamental eigenfunction of radial modes in the slow scenario in which hadrons do not deconfine into quarks during the oscillation timescale. The star considered here and in Fig. 4 has M ≃ 0.02 M_⊙, B_core ≃ 2.69 × 10⁵⁵, and ε_t = ε_drip and is located to the right of the minimum of the dashed blue curve in Fig. 1. Here, the mode is stable: ω² = 0.788275 Hz². In the inset plot, the region around r = r_t is magnified: there the eigenfunction has a kink.