Abstract
With an angular resolutions of 0.05–0.2 mas, millimeter-VLBI1 observations (at 22, 43, and 86 GHz) allow to investigate the very central — sub-parsec scale — regions of active galactic nuclei (AGN), which are self-absorbed at lower frequencies. Here we briefly present preliminary results from recent observations of Cygnus A at 22 & 43 GHz, which reveal evidence for subluminal motion in jet and counter-jet, and 86 GHz VLBI observations of two extreme γ—blazars, suggesting a tight correlation between their γ—ray activity and the generation of jets.
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© 1996 International Astronomical Union
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Krichbaum, T.P., Alef, W., Witzel, A. (1996). The Sub-Parsec Scale Jets of AGN. In: Ekers, R., Fanti, C., Padrielli, L. (eds) Extragalactic Radio Sources. International Astronomical Union, vol 175. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0295-4_3
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DOI: https://doi.org/10.1007/978-94-009-0295-4_3
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-4122-2
Online ISBN: 978-94-009-0295-4
eBook Packages: Springer Book Archive