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Sweeping-Magnetic-Twist Mechanism and Molecular Bipolar Flows

Published online by Cambridge University Press:  04 August 2017

Kazunari SHIBATA  and
Yutaka UCHIDA
Kazunari SHIBATA
Affiliation:
Department of Earth Science, Aichi University of Education
Yutaka UCHIDA
Affiliation:
Tokyo Astronomical Observatory, University of Tokyo

Extract

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Uchida and Shibata have proposed the “sweeping-magnetic-twist” mechanism for the formation of astrophysical jets in relation to the accretion disks (disks around protostars, around black hole in the center of active galactic nuclei, and so on) in which a jet is accelerated by the jxB force in the relaxing magnetic twist created in the winding-up of the poloidal magnetic field by the rotation of the contracting disk (Uchida and Shibata 1985a, b; Shibata and Uchida 1986a, b; Uchida et al. 1985). In this mechanism, a jet is collimated also by the jxB force due to the large scale poloidal magnetic field whose footpoints are squeezed in the contracting disk. The main mechanism involved is different from that of centrifugal wind models (Blandford and Payne 1982, Pudritz and Norman 1983) and worked out indepentently, but the centrifugal effect itself is automatically built-in.

Type
I. Star Forming Processes in the Solar Neighborhood
Information
Symposium - International Astronomical Union , Volume 115: Star Forming Regions , 1987 , pp. 385 - 387
Copyright
Copyright © Reidel 1987 

References

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