Classical and relativistic conservation of momentum flux in radio-galaxies

TL;DR

This paper derives new laws of motion for turbulent jets in intergalactic media using classical and relativistic momentum conservation, explaining features like oscillations, curvature, and knots in radio-galaxies.

Contribution

It introduces a unified approach applying classical and relativistic momentum flux conservation to model radio-galaxy jet features.

Findings

Model explains oscillations and curvature in jets.

Knots are interpreted as image effects.

Provides a theoretical framework for jet dynamics.

Abstract

A new set of laws of motion for turbulent jets propagating in an intergalactic medium characterized by a decreasing density is derived by applying conservation of momentum flux both in the classical and relativistic framework. Two characteristic features of radio-galaxies, such as oscillations and curvature, are modeled by a classical helicoidal jet. A third feature of a radio-galaxy, the appearance of knots, is explained as an effect due to the theory of images.