An Extended Radio-frequency Source of Extra-galactic Origin

Details An Extended Radio-frequency Source of Extra-galactic Origin An Extended Radio-frequency Source of Extra-galactic Origin

Nov 1953

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1953natur.172..997h&link_type=abstract

Nature, Volume 172, Issue 4387, pp. 997-998 (1953).

Physics

5

Scientific paper

THE detection of the radio-frequency radiation from the Galaxy1 together with that from a number of individual nebulæ2-5 (types Sb or Sc) suggests that the emission of radio energy is a common property of the spiral nebulæ. It is therefore to be expected that the marked irregularities which are observed in the distribution of extra-galactic nebulæ (see Fig. 1) will give rise to corresponding irregularities in the radio isophotes of the sky. In a previous publication3 we reported the detection at 158.5 Mc./s. of an extended band of low-intensity radiation, lying between declinations N. 44° and N. 54° and centred at R.A. 12h., and we suggested that the irregularity is associated with a concentration of nebulæ.

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