Abstract
VLBI observations of 3C147 reveal that its core is a low-frequency variable radio source which has brightened by a factor of 2 in 6 years. In combination with X-ray observations, this implies that bulk relativistic motion is taking place within the core, and leads to the prediction that 3C147 is a member of the class of superluminal radio sources.
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Simon, R., Readhead, A., Moffet, A. et al. Low-frequency variability and predicted superluminal motion in 3C147. Nature 302, 487–490 (1983). https://doi.org/10.1038/302487a0
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DOI: https://doi.org/10.1038/302487a0
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