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arXiv · astro-ph/0309382

Approaching NGC3079 with VLBI

E. Middelberg·T. P. Krichbaum·A. L. Roy·A. Witzel·J. A. Zensus
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Abstract

The Seyfert 2 galaxy NGC3079 is one of the nearest radio-weak AGN. We have carried out multi-frequency, multi-epoch VLBI observations of this object and detected new components, proper motion of the order of 0.1 c, strong spectral variability, and free-free absorption. Based on phase-referenced astrometry, we suggest a new identification of components seen at 1.7 GHz. Our results suggest that the nucleus in NGC3079 is embedded in a dense medium which strongly affects the radio appearance of the AGN ejecta. We supplement our work with Seyfert VLBI observations taken from the literature.

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E. Middelberg, T. P. Krichbaum, A. L. Roy, A. Witzel, J. A. Zensus. 2003-09-15. Approaching NGC3079 with VLBI. https://arxiv.org/abs/astro-ph/0309382

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