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Published April 2, 2001 | Published
Book Section - Chapter Open

The properties of the gamma-ray blazars in the CJ-F VLBI sample


We present first results from the analysis of multi-epoch VLBI observations of the EGRET detected sources [9] in the CJ-F sample (Caltech Jodrell-Flat-spectrum, [10]). These objects form a subsample of 14 sources within the 293 AGN of the full CJ-F sample. 5 GHz VLBI snapshot observations of the CJ-F sources are continuously being performed in order to create a valid database for thorough statistical tests of pc-scale jet motion in AGN. All gamma-bright CJ-F AGN have been observed at least twice with the VLBA, which enables us to investigate jet component motions and paths. In particular, we concentrate on the analysis of those properties supposed to be essential for gamma-ray production, i.e., superluminal motion and bending. A paper discussing the possible relation between morphological changes and gamma-ray flaring/production is in preparation.

Additional Information

© 2001 American Institute of Physics. Issue Date: April 2, 2001. This work was supported by the European Commission, TMR Programme, Research Network Contract ERBFMRXCT97-0034 CERES.

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