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A Theoretical MHD Model for Extragalactic Jets and its Comparison with the Observations

Published online by Cambridge University Press:  19 July 2016

P. Pietrini
P. Pietrini*
Affiliation:
Department of Astronomy and Space Science L. E. Fermi 5 50125 Firenze Italy

Abstract

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Two aspects of the MHD stationary equilibrium model developed by Chiuderi et al.(1989) to describe extragalactic jets are analyzed and compared with the observational constraints: the global energy flux convected by the cylindrical jet and the ranges of the equilibrium parameters allowed by the stability analysis. In particular, the results obtained from the temporal stability analysis are converted into a spatial point of view. In this context, it is easier to find essentially “stable” equilibrium configurations for shorter jets. In conclusion, the fundamental hypotheses of this model (like thermal confinement and substantial equipartition among the various forms of energy considered) are such that the model turns out to be suitable for the description of class I jets, associated with rather low-power radio sources.

Type
8. The Role of Magnetic Fields in Radio Source Jets and Extended Radio Lobes
Information
Symposium - International Astronomical Union , Volume 140: Galactic and Intergalactic Magnetic Fields , 1990 , pp. 441 - 442
Copyright
Copyright © Kluwer 1990 

References

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