Joint Commission Meeting on Beams and Jets in Extragalactic Sources

Here I shall interpret ‘small-scale’ to mean a few kpc or less. Such jets occur over a wide range of emitted energies (e.g. 1039∈rg s-1 in M87, 1046 in 3C273) and we do not know if they are manifestations of the same basic phenomenon or whether Nature is fooling us in some way despite the morphological similarities. For the moment, it seems sensible to asume an underlying unity and to use the observations to explore the jet phenomenon in different guises.