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The Sub-Parsec Scale Jets of AGN

  • T. P. Krichbaum
  • W. Alef
  • A. Witzel
Conference paper
Part of the International Astronomical Union book series (IAUS, volume 175)

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.

Keywords

Active Galactic Nucleus Radio Galaxy Contour Level Tight Correlation Radio Luminosity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© International Astronomical Union 1996

Authors and Affiliations

  • T. P. Krichbaum
    • 1
  • W. Alef
    • 1
  • A. Witzel
    • 1
  1. 1.Max-Planck-Institut für RadioastronomieBonnGermany

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