Density (left) and radial velocity (right) fields around the same halo of M_GrO = 1.00·10¹³ h⁻¹ M_⊙ and r₂₀₀ = 500 h⁻¹ kpc. The upper panel shows the halo in the gravity-only simulation, while all the others show the gas component of the halo in different feedback scenarios, with increasing strength from top to bottom. The panels show a region of ±10r₂₀₀ around the halo centre, projecting a slice of thickness of 4r₂₀₀. White circles represent a 5r₂₀₀ radius. Positive (negative) radial velocities are shown in blue (red).