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• The quasar 3C345 at the highest resolution with mm- and space-VLBI,
  J. Klare, J.A. Zensus, T.P. Krichbaum, A.P. Lobanov, E. Ros
  Galaxies and their Constituents at the Highest Angular Resolution, IAU Symp. 205, Schilizzi, R.T., Vogel, S., Paresce, F., Elvis, M. (eds.) , in press (2001)
  [ PostScript ]
  • Abstract The quasar 3C345 is one of the best examples of superluminal component motion on helical paths. To get better constraints on the jet physics we use imaging with the highest possible resolution available. This can be achieved in VLBI observations made at shorter wavelengths (mm-VLBI) or with longer baselines (space-VLBI). We applied both approaches to 3C345, and observed the source at 9 different epochs (5 epochs with 3-mm ground VLBI, and 4 epochs with space VLBI at 6cm and 18cm). These measurements provide complementary information to earlier results with lower resolutions. We discuss the properties of the jet and moving components in the immediate vicinity of the core (< 3mas). Our results will help to get a better understanding of the physical processes in compact extragalactic jets.

Eduardo Ros ros@mpifr-bonn.mpg.de

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