Abstract
MANY clusters of galaxies from Abell's catalogue1 have recently been observed at 1,400 MHz with the 300-foot radio telescope of the NRAO (ref. 2 and F. Owen, to be published). On the Palomar Sky Survey prints we inspected 355 clusters of galaxies (111 of them were observed by H.M.T.2, the remaining 244 by F. Owen, to be published) which belong to distance group 5 and thus are situated at almost the same distance. Radio emission in excess of 0.1 flux units (f.u.) was detected from 95 out of the 355. A radio source was identified with a cluster of galaxies if it was within 5 arc min from the cluster centre, the diameter of which is about 25 arc min.
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References
Abell, G. O., Astrophys. J. suppl., 3, 211 (1958).
Tovmassian, H. M., Astrofisika, 9, 177 (1973).
Bautz, L. P., and Morgan, W. W., Astrophys. J., 162, L149 (1970).
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TOVMASSIAN, H., SHIRBAKIAN, M. How long do radio galaxies emit at radio wavelengths. Nature 250, 474 (1974). https://doi.org/10.1038/250474a0
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DOI: https://doi.org/10.1038/250474a0
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