Robustness of the Blandford-Znajek mechanism

TL;DR

This paper investigates the robustness of the Blandford-Znajek mechanism in extracting energy from rotating black holes, analyzing how different boundary conditions affect its behavior and stability in astrophysical jet models.

Contribution

It provides a systematic analysis of the Blandford-Znajek mechanism's robustness under various boundary conditions, addressing a key gap in understanding its stability and applicability.

Findings

The mechanism remains stable across a range of boundary conditions.

Boundary variations do not significantly alter energy extraction efficiency.

The study enhances confidence in the BZ mechanism's role in astrophysical jets.

Abstract

The Blandford-Znajek mechanism has long been regarded as a key ingredient in models attempting to explain powerful jets in AGNs, quasars, blazzars etc. In such mechanism, energy is extracted from a rotating black hole and dissipated at a load at far distances. In the current work we examine the behaviour of the BZ mechanism with respect to different boundary conditions, revealing the mechanism robustness upon variation of these conditions. Consequently, this work closes a gap in our understanding of this important scenario.