Parsec-scale properties of a complete sample of radio galaxies

Details Parsec-scale properties of a complete sample of radio galaxies Parsec-scale properties of a complete sample of radio galaxies

2000-09-21

arxiv.org/abs/astro-ph/0009351v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, Proceedings of the 5th EVN Symposium, Eds. John Conway, A. Polatidis, R. Booth, Chalmers Technical Univers

Scientific paper

We report the most important results on the parsec-scale properties of a complete sample of radio galaxies carried out at radio frequencies with the Global VLBI array and with the VLBA. Relativistic parsec-scale jets are common both in FRI and FRII radio galaxies, and their orientation to the line of sight is in agreement with the expectations from the unified schemes for radio loud AGNs. Proper motion has been detected in a few FRI galaxies in the sample. FRI and FRII radio galaxies exhibit very similar properties on the parsec-scale. Finally a few radio sources in the sample show evidence of velocity structure in the parsec-scale jet, i.e. a central spine with high Lorentz factor $\gamma$ and slower layers.

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