Abstract
Powerful extragalactic radio sources may all be members of a single family in which those showing superluminal behaviour are the ones in which a relativistic jet is directed towards the observer. The superluminal sources are shown to have extended radio structures the form of which is consistent with such a unified scheme. This interpretation requires that the Hubble constant H0 should be nearer to 100 than to 50 km s−1 Mpc−1.
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Browne, I., Clark, R., Moore, P. et al. MERLIN observations of superluminal radio sources. Nature 299, 788–793 (1982). https://doi.org/10.1038/299788a0
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DOI: https://doi.org/10.1038/299788a0
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