  Using the Grad-Shafranov equation, we consider a new analytical model of the
black hole magnetosphere based on the assumption that the magnetic field is
radial near the horizon and uniform (cylindrical) in the jet region. Within
this model, we have managed to show that the angular velocity of particles near
the rotation axis of the black hole can be smaller than one half of the black
hole angular velocity. This result is consistent with the latest numerical
simulations.
