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Variability of Active Galaxies pp 225–234Cite as

Variable radio sources and the two-fluid models

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Part of the book series: Lecture Notes in Physics ((LNP,volume 377))

Abstract

Superluminal radio sources associated with extended double sources can be explained by a two-fluid model that consist of i) a non-relativistic e− -p jet responsible for the formation of the extended lobes and ii) a relativistic e−-e+ beam responsible for superluminal radio sources. When the magnetic is greater than a critical value B c, the beam can propagate along the magnetic field lines without dissipation. Natural consequences of the beam-jet interaction are, in the dissipation area, the acceleration of relativistic electrons by strong Langmuir turbulence, the possible formation of shocks, the emission of coherent emission and the generation of a local toroidal magnetic field. Depending on the value of the magnetic field in the beam compared to the critical value, one can observe superluminal quasars, BL Lac objects or flickering radio sources.

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Author information

Authors and Affiliations

  1. Observatoire de Grenoble, CERMO BP68, 38402, St. Martin d'Hères Cedex, France

    G. Pelletier

  2. Institut d'Astrophysique, 98 Bis Bd. Arago, 75014, Paris, France

    Jacques Roland

  3. Observatoire de Meudon, 92190, Meudon, France

    Hélène Sol

Authors
  1. G. Pelletier
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  2. Jacques Roland
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  3. Hélène Sol
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Editor information

Wolfgang J. Duschl Stefan J. Wagner Max Camenzind

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© 1991 Springer-Verlag

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Pelletier, G., Roland, J., Sol, H. (1991). Variable radio sources and the two-fluid models. In: Duschl, W.J., Wagner, S.J., Camenzind, M. (eds) Variability of Active Galaxies. Lecture Notes in Physics, vol 377. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0030064

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  • DOI: https://doi.org/10.1007/BFb0030064

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-53860-8

  • Online ISBN: 978-3-540-46325-2

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