Abstract
THE programme of interferometric observations of distant radio sources at present being carried out by H. P. Palmer et al. at Jodrell Bank may prove to be of great significance for cosmology. The preliminary results recently published1 indicate that out of 91 sources 38 were of sufficiently small angular diameter to produce measurable interference fringes at the long base line used (32,000 λ at λ = 1.89 m.), and at least 7 had a diameter between half-power points less than 3 sec. of arc. Furthermore, these 7 were described as having “an extremely high surface brightness which is comparable with that of the intense radio source in Cygnus I.A.U. 19 N4A”.
Similar content being viewed by others
References
Allen, L. R., Palmer, H. P., and Rowson, B., Nature, 188, 731 (1960).
Hoyle, F., Paris Symposium on Radio Astronomy, 529 (Stanford Univ. Press, 1959).
Davidson, W., Mon. Not Roy. Astro. Soc., 120, 271 (1960).
Davidson, W., Mon. Not. Roy. Astro. Soc., 119, 54 (1959).
Pawsey, J. L., and Bracewell, R. N., Radio Astronomy, 11 (Oxford, 1955).
Davies, R. D., and Palmer, H. P., Radio Studies of the Universe, 185 (Routledge and Kegan Paul, London, 1959).
Bolton, J. G., U.R.S.I., Thirteenth General Assembly (London, 1960).
Jennison, R. C., and Das Gupta, M. K., Phil. Mag., 1 (eighth series), 65 (1956).
Whitfield, G. R., Mon. Not. Roy. Astro. Soc., 117, 680 (1957).
Minkowski, R., Astrophys. J., 132, 906 (1960).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
DAVIDSON, W. Cosmological Significance of Angular Measurements of Distant Radio Sources. Nature 189, 991–992 (1961). https://doi.org/10.1038/189991a0
Issue Date:
DOI: https://doi.org/10.1038/189991a0
- Springer Nature Limited
We’re sorry, something doesn't seem to be working properly.
Please try refreshing the page. If that doesn't work, please contact support so we can address the problem.