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24 April 2024 |
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Article overview
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Approaching NGC3079 with VLBI | E. Middelberg
; T. P. Krichbaum
; A. L. Roy
; A. Witzel
; J. A. Zensus
; | Date: |
15 Sep 2003 | Subject: | astro-ph | Affiliation: | MPIfR), T. P. Krichbaum (MPIfR), A. L. Roy (MPIfR, Giub), A. Witzel (MPIfR), J. A. Zensus (MPIfR | 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. | Source: | arXiv, astro-ph/0309382 | Services: | Forum | Review | PDF | Favorites |
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