Fractions of the gravitational drag force f(r_i) to the total gravitational drag force acting on the moving object as a function of distance to the object. The vertical solid lines mark the stand-off distance R_SO of the shock ahead of the object, and the dashed vertical lines denote the accretion radius R_A according to Eq. (3). Results are shown for simulations with three different Mach numbers ℳ as labelled in the bottom left corners.