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A Plasmon Driven Bowshock Model for the Narrow Line Region of NGC 5929

Published online by Cambridge University Press:  12 April 2016

D. Taylor ,
J. E. Dyson ,
D. J. Axon  and
A. Pedlar
D. Taylor
Affiliation:
Department of Astronomy, University of Manchester, Manchester M13 9PL, U.K.
J. E. Dyson
Affiliation:
Department of Astronomy, University of Manchester, Manchester M13 9PL, U.K.
D. J. Axon
Affiliation:
Nuffield Radio Astronomy Observatories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, U.K.
A. Pedlar
Affiliation:
Nuffield Radio Astronomy Observatories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, U.K.

Extract

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Close links appear to exist between the optical narrow line region (NLR) in Seyfert galaxies and the nuclear non-thermal radio emission. Both occur on similar scales (~ 102 —103 pc), and correlations have been found between the 21 cm radio power and both the [OIII] λ5007Å luminosity and linewidth (de Bruyn & Wilson 1978; Whittle 1985). Approximate balance appears to exist between the thermal pressure of the NLR gas and the relativistic and magnetic pressure of the radio components (de Bruyn & Wilson 1978; Unger et al. 1985; Pedlar, Dyson & Unger 1985). There are also several examples of a direct spatial association between the optical and radio components, for example Mkn 78 (Pedlar et al. 1988).

Type
V. The Extragalactic ISM
Information
International Astronomical Union Colloquium , Volume 120: Structure and Dynamics of the Interstellar Medium , 1989 , pp. 364 - 368
Copyright
Copyright © Springer-Verlag 1989

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