Radio-frequency Radiation from the Great Nebula in Andromeda (M.31).

@article{Brown1950RadiofrequencyRF,
  title={Radio-frequency Radiation from the Great Nebula in Andromeda (M.31).},
  author={R. Hanbury Brown and Cyril Hazard},
  journal={Nature},
  year={1950},
  volume={166},
  pages={901-902}
}
THE experiments of Bolton and Stanley1, and of Ryle and Smith2,3, using a radio interferometer have shown that a significant part of the extra-terrestrial radio noise is associated with point sources with diameters of less than 6 minutes of arc. Although the majority of these sources are unidentified with visual objects, their distribution indicates that they lie in our own galaxy. Attempts to detect radio emissions from specific extra-galactic objects have hitherto been unsuccessful. In this… 
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FOLLOWING the detection1 of radio-frequency radiation from the Great Nebula in Andromeda M.31, the 218-ft. paraboloid at the Jodrell Bank Experimental Station has been used for continuing the
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A New Intense Source of Radio-Frequency Radiation in the Constellation of Cassiopeia
THE discovery by Hey, Parsons and Phillips1,2 of a variable source of radio-frequency radiation in the constellation of Cygnus suggested that at least part of the galactic radiation was due to very
An investigation of radio-frequency radiation from the sun
  • M. RyleD. Vonberg
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    Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
  • 1948
TLDR
A special type of aerial has been devised which enables the solar radiation to be recorded separately from the galactic radiation, and so enables continuous observation of the sun to be made with aerials of comparatively low directivity.
Variable Source of Radio Frequency Radiation in the Constellation of Cygnus
COSMIC or galactic noise was discovered by Jansky1 in 1931; but its exact origin has remained uncertain. It is generally supposed to originate from collisions in interstellar matter2; but there are