Approaching NGC 3079 with VLBI

被引：0
|
作者：
Middelberg, E [1 ]
Krichbaum, TP [1 ]
Roy, AL [1 ]
Witzel, A [1 ]
Zensus, JA [1 ]
机构：
[1] Max Planck Inst Radioastron, D-5300 Bonn, Germany
来源：
Future Directions in High Resolution Astronomy: The 10th Anniversary of the VLBA | 2005年 / 340卷
关键词：
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Seyfert 2 galaxy NGC 3079 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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页码：140 / 144
页数：5
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