Centrifugally driven electrostatic instability in extragalactic jets

TL;DR

This paper investigates the electrostatic instability in relativistic plasma flows of extragalactic jets, deriving an expression for the instability rate and analyzing its efficiency under typical AGN conditions.

Contribution

It presents a new analysis of the electrostatic instability in AGN jets by deriving an explicit growth rate expression and studying its dependence on wave parameters.

Findings

Instability growth rate is high compared to accretion disk evolution.

Instability efficiency varies with wavelength and inclination angle.

Electrostatic instability can significantly influence jet dynamics.

Abstract

The stability problem of the rotation induced electrostatic wave in extragalactic jets is presented. Solving a set of equations describing dynamics of a relativistic plasma flow of AGN jets, an expression of the instability rate has been derived and analyzed for typical values of AGNs. The growth rate was studied versus the wave length and the inclination angle and it has been found that the instability process is much efficient with respect to the accretion disk evolution, indicating high efficiency of the instability.