Abstract
Measurements of the angular sizes of radio source components in the range 0.1″–1.0″, using the technique of interplanetary scintillation, reveal an absence of small–diameter sources at the largest redshifts. The cosmological implications of this result are discussed.
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Hewish, A., Readhead, A. & Duffett-Smith, P. New observations of the angular diameter-redshift relation for radio sources. Nature 252, 657–659 (1974). https://doi.org/10.1038/252657a0
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DOI: https://doi.org/10.1038/252657a0
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