Evolving mass loss (top panels), mass (middle panels) and radius (bottom panels). Left panels: case of three planets of different masses, M_P = 0.55 (red line), 1 (green line), and 2 M_J (blue line), subjected to identical irradiation F_XUV = 1.1 × 10⁶ erg cm⁻² s⁻¹. Right panels: the planetary mass is taken constant to M_P = 1 M_J, while the initial X-ray luminosity is varied, (red line), 3 × 10²⁹ (green line), 1.6 × 10³⁰ erg s⁻¹ (blue line). The dashed lines in the bottom left panel indicate the temporal evolution of the planetary size without evaporation (i.e. just considering gravitational shrink). Bottom right panel: the black dashed line marks the temporal evolution of the planetary radius due to gravitational contraction. Top labels indicate the initial X-ray luminosity (left panels), andplanetary mass (right panels).