Magnetized accretion-ejection structures. II. Magnetic channeling around compact objects

Details Magnetized accretion-ejection structures. II. Magnetic channeling around compact objects Magnetized accretion-ejection structures. II. Magnetic channeling around compact objects

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...276..637f&link_type=abstract

Astronomy and Astrophysics, Vol. 276, p. 637 (1993)

Astronomy and Astrophysics

Astrophysics

18

Scientific paper

We describe self-consistently the structure of a magnetized accretion disk driving jets that extract all its angular momentum, without any viscous effect. It concerns the inner part of an accretion disk, having a Thomson opacity and supported by radiation pressure. This class is characterised by an important toroidal current due to the concentration of the poloidal field dragged by the accretion flow. It is demonstrated that this structure displays jets, even without corona, that can become transAlfvenic. The engine works with reasonable orders of magnitude of the physical parameters. Most of the accretion flow is rerouted in the jets at a rate that exceeds the Eddington rate; in fact the Eddington luminosity and accretion rate are not limits any more in these structures, but merely fiducial quantities.

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