EVN observations of candidate Compact Symmetric Objects

Details EVN observations of candidate Compact Symmetric Objects EVN observations of candidate Compact Symmetric Objects

2002-01-31

arxiv.org/abs/astro-ph/0201536v1

Astronomy and Astrophysics

Astrophysics

12 pages, 9 figures, accepted for publication on A&A

Scientific paper

10.1051/0004-6361:20020162

We present pc-scale images of ten Compact Symmetric Objects (CSO) candidates observed with the European VLBI network (EVN). Five radio sources have been observed at 1.6 GHz, and five more at 2.3/8.4 GHz, the latter subsample with the inclusion in the VLBI array of 3 antennae normally used for geodesy. These objects were selected from existing samples of GHz Peaked Spectrum (GPS) radio sources with the purpose to find and/or confirm the CSO classification. These new VLBI observations allow us to confirm the classification of two CSO candidates, and to find a few new ones. The association of GPS radio galaxies with a CSO morphology is strengthened by our findings, and this result suggests an efficient way to increase the number of known CSOs by means of VLBI observations of compact radio galaxies showing a convex radio spectrum.

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