Generation of Current System and Energy Deposition in a Magnetohydrodynamic Model for the Production of Radio Jets from Active Galactic Nuclei (AGN’s)

Abstract

We have performed 2.5D MHD numerical simulations based on our model of the MHD jet formation (Uchida and Shibata 1985). We have already shown also in the case of AGN jets that a magnetically driven, well-collimated jets can be accelerated in the direction of the rotating axis of the accretion disk around the central object (Uchida and Shibata 1986, Matsumoto et al. 1996). In this model, it is our concept that the jets are formed by the interaction between the accretion disk and a large scale magnetic field. By this interaction, angular momentum of the disk gas is taken away, and the gas of the disk accretes towards the central massive blackhole, and the gravitational potential energy of the disk is continuously liberated in a much enhanced way. At the same time, a large scale magnetic field is helically twisted and this twist propagates as non-linear torsional Alfvén wave. We consider the generation, transfer, and depositon of the electromagnetic energy according to this MHD model of jets formation.KeywordsEnergy FluxLorentz ForceAccretion DiskElectromagnetic EnergyGravitational Potential EnergyThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.