Proton-density distribution in the orbital plane of the whole simulated domain for the run computed considering a He/H abundance ratio of 0.01 and an EUV stellar flux at 1 AU of 0.7 erg cm⁻² s⁻¹. The planet is at the centre of coordinate (0,0) and moves counter-clockwise relative the star, which is located at (76,0). Proton fluid streamlines originating from the planet (black) and from the star (grey) are shown. The axes are scaled in planetary radii.