Streamlines and gas density in the midplane of the planet, shown in a co-rotating frame centered on a planet. Here the core is accreting solids at rate of about 10 M_E/Myr. (RUNHIGHRESL27). The x-axis points radially, the y-axis follows the azimuthal direction. Significant advection of mass occurs through the Hill sphere (marked by the white dashed line). The inner (left) and outer (right) circulating streamlines are shown in gray. Orange streamlines indicate the horseshoe region. The white streamlines show infalling gas from the poles being deflected outwards. Inside this region gas is unsteady in nature but nearly bound. A slow retrograde rotation can be seen, with respect to the rotating frame. The midplane gas density is shown in the background (in g/cm³).