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Paper: The CJF Survey - First Results on Superluminal Motion
Volume: 159, BL Lac Phenomenon
Page: 431
Authors: Britzen, S.; Vermeulen, R. C.; Taylor, G. B.; Readhead, C. S.; Pearson, T. J.; Henstock, D. R.; Wilkinson, P. N.
Abstract: The Caltech-Jodrell Bank flat-spectrum (CJF) sample is a complete flux-density-limited sample of 293 flat-spectrum sources. It integrates existing VLBI survey observations (Pearson & Readhead 1988; Polatidis et al. 1995; Taylor et al. 1994) into a large, homogeneous database for statistical studies of a broad range of astrophysical and cosmological issues; e.g. the combination of the apparent superluminal motion distribution in the parsec-scale jets with radio source counts may allow us to make an assessment of the presence of cosmological evolution in the velocity distribution. Most recently third epoch VLBA observations at 5 GHz have been finished. Here we present first results on the superluminal motion statistics in view of different identification classes.
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