  The present work is devoted to the analysis of the internal structure of
relativistic jets under the condition that the velocity of the plasma flow at
the jet axis vanishes. It is shown that in spite of the seemingly fundamental
difference in the formulation of the problem at the axis, the key properties of
the internal structure of such relativistic jets remain the same as for nonzero
velocity along the axis. In both cases, at a sufficiently low ambient pressure,
a dense core appears near the axis, the radius of which is close to the size of
the light cylinder.
