On the Radio Image of Relativistic Jets -- I. Internal Structure, Doppler Boosting, and Polarization Maps

TL;DR

This paper investigates the internal structure, Doppler boosting, and polarization maps of relativistic jets from active galactic nuclei, providing detailed physical profiles and observational predictions.

Contribution

It introduces a method to determine radial profiles of physical parameters and constructs Doppler boosting and polarization maps for relativistic jets.

Findings

Radial profiles of physical quantities are derived for various magnetization and pressure conditions.

Doppler boosting factor maps are generated, showing how jet orientation affects observed brightness.

Polarization maps reveal the magnetic field structure within the jets.

Abstract

In this first paper from forthcoming series of works devoted to radio image of relativistic jets from active galactic nuclei the role of internal structure of a flow is discussed. We determine the radial profiles of all physical values for reasonable Michel magnetization parameter $\sigma_{\rm M}$ and ambient pressure $P_{\rm ext}$. Maps of Doppler boosting factor $\delta$ and observed directions of linear polarization of synchrotron emission are also constructed.