For $f_{\mathrm{heat}}=f_{\mathrm{heat}}^{\mathrm{crit}}$, we show the evolution of the electron neutrino and antineutrino luminosities $L_{{\overline{\nu }}_e,{\nu }_e}$ (solid lines) at the gain radius and the net neutrino energy deposition rate in the gain layer ${\dot{Q}}_{\nu }$ (${\int }_{\text{gain}}{\dot{q}}_v^{+}dV$, dashed lines) vs. time t_bounce. The simulations started with an iron core-collapse velocity of 1000 km s⁻¹, where t = 0 corresponds to the shock wave formation. The top and bottom panels show 15 M_⊙ and 60 M_⊙ ZAMS masses, respectively, with initial velocities V_ini = 0 (left panels) and 300 km s⁻¹ (right panels). All models have a metallicity of 1/10 Z_⊙.