On the Internal Structure of Relativistic Jets with Zero Velocity Along the Axis

TL;DR

This paper investigates the internal structure of relativistic jets with zero velocity at the axis, revealing that key features like a dense core near the axis are similar to jets with nonzero axial velocity, especially at low ambient pressure.

Contribution

It demonstrates that the internal structure of relativistic jets with zero axial velocity shares key properties with jets having nonzero velocity, despite different formulations.

Findings

A dense core forms near the axis at low ambient pressure.

The core radius is close to the size of the light cylinder.

Key structural properties are similar to nonzero velocity jets.

Abstract

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.