Abstract
THE optically selected quasar1 Q0000–398 has a redshift2 z = 2.827. This quasar has been identified with a faint double radio source whose angular extent is 134 ± 40 arc s. As all known high-redshift radio-selected quasars have much smaller angular sizes, it has been suggested that the upper envelope of the angular size–redshift diagram of radio quasars is depressed by an anticorrelation of linear size and radio luminosity3. We show here, first that the radio source associated with Q0000–398 is compact and centred on the optical quasar, and second that there is no evidence in our data on other quasars for the suggested anticorrelation.
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References
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CONDON, J., BUCKMAN, M. & SMITH, M. The angular size of the high-redshift quasar Q0000–398. Nature 278, 530 (1979). https://doi.org/10.1038/278530a0
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DOI: https://doi.org/10.1038/278530a0
