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Magnetized Accretion Disks Driving Jets

Published online by Cambridge University Press:  19 July 2016

G. Pelletier,
J. Ferreira and
F. Rosso
G. Pelletier
Affiliation:
Laboratoire d'Astrophysique de l'Observatoire de Grenoble Domaine Universitaire. BP 53X. 38 041 Grenoble. France
J. Ferreira
Affiliation:
Laboratoire d'Astrophysique de l'Observatoire de Grenoble Domaine Universitaire. BP 53X. 38 041 Grenoble. France
F. Rosso
Affiliation:
Laboratoire d'Astrophysique de l'Observatoire de Grenoble Domaine Universitaire. BP 53X. 38 041 Grenoble. France

Extract

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In this brief communication, we present some progress in the investigation of a most promising model that was designed to combine ejection with accretion. In this model, a bipolar configuration of opened magnetic field lines that thread the accretion disk, allows the extraction of angular momentum, the acceleration of matter up to super Alfvénic velocities and the self collimation of the jet. However, important issues have remained unsolved. First, a systematic method for solving the jet MHD equations with their critical surfaces was lacking. Second, the capability of accretion disks to generate super Alfvénic jets was unknown. Third, the back-reaction of the ejection on the accretion disk dynamics and its energetics remained to be done. Solving these three points led us to draw some noteworthy consequences for the understanding of AGNs.

Information

Type
AGN Physics and Models
Information
Symposium - International Astronomical Union , Volume 159: Multi-Wavelength Continuum Emission of AGN , 1994, pp. 249 - 252
Copyright
Copyright © Kluwer 1994 

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