A Dipole Vortex Model of Obscuring Tori in Active Galaxy Nuclei

TL;DR

This paper proposes a dipole vortex model for the obscuring torus in active galactic nuclei, explaining variability, matter replenishment, and flares, with parameters matching observations near the Eddington luminosity.

Contribution

It introduces a novel dipole vortex model for the AGN torus, linking it to variability and matter dynamics, advancing understanding of AGN structure and behavior.

Findings

Model parameters align with observed AGN luminosities near Eddington limit.

The vortex structure explains AGN variability and matter outbursts.

Proposes a 'Matreshka' scheme for the torus structure.

Abstract

The torus concept as an essential structural component of active galactic nuclei (AGN) is generally accepted. Here, the situation is discussed when the torus "twisting" by the radiation or wind transforms it into a dipole toroidal vortex which in turn can be a source of matter replenishing the accretion disk. Thus emerging instability which can be responsible for quasar radiation flares accompanied by matter outbursts is also discussed. The "Matreshka" scheme for an obscuring vortex torus structure capable of explaining the AGN variability and evolution is proposed. The model parameters estimated numerically for the luminosity close to the Eddington limit agree well with the observations.