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Random Precessing Jet and Accretion Disk at the Galactic Center
Published online by Cambridge University Press: 19 July 2016
Extract
As a mechanism to generate asymmetric radio features in the central 50 pc of the Galaxy (Sofue and Fujimoto 1987), we consider a gaseous jet from the tilted accretion disk at the center and the interaction of the jet with ambient gas on the galactic plane. It is shown schematically in figure 1 that the magnetic torques N1,2,3 exert on a gaseous element ρhΔsΔr of a ring to change its tilted orbital plane, and where γ1,2,3 are constants of a factor of unity and e1,2,3 unit vectors. The azimuthal angle ϕ is measured along the rotation from the lowest part of the ring below the galactic plane. The orbital plane is tilted against the galactic plane by the angle θ The change of the angular momentum of the disk element L = ρhΔsΔrr × v is, where 〈〉 means the average over one rotation period T or over ϕ = 0 to 2π in equations (1) to (3).
- Type
- 7. Magnetic Fields in Galactic Nuclei
- Information
- Symposium - International Astronomical Union , Volume 140: Galactic and Intergalactic Magnetic Fields , 1990 , pp. 377 - 378
- Copyright
- Copyright © Kluwer 1990