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VLBI Observations of NGC4151 at 6 cm Wavelength

Published online by Cambridge University Press:  04 August 2017

E. Preuss ,
W. Alef  and
A. Pedlar
E. Preuss
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-5300 Bonn 1, F.R.G.
W. Alef
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-5300 Bonn 1, F.R.G.
A. Pedlar
Affiliation:
Nuffield Radio Astronomy Laboratory, Jodrell Bank, Macclesfield, Chesire SK11 9DL, England

Extract

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The fraction of Seyfert galaxies containing linear radio sources is quite substantial and may be more than 50% (Ulvestad and Wilson 1984). About 20 of the well resolved Seyfert galaxies show double or triple structure on the arcsec scale. In this respect these objects are very reminiscent of the classical radio galaxies, but they are typically smaller than these by several orders of magnitude, both with regard to power ∼ 1039–1041 erg/s and linear extent kpc (Wilson, this volume). They are basically confined in the wider nuclear environment. The central small scale () radio sources in Seyfert galaxies are very weak, mJy at 6 cm wavelength, and have therefore hardly been observed with VLBI (see, e.g. Preuss 1984).

Type
V. Jets, Superluminal Motions and Blazars
Information
Symposium - International Astronomical Union , Volume 121: Observational Evidences of Activity of Galaxies , 1987 , pp. 269 - 272
Copyright
Copyright © Reidel 1987 

References

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