Radio-Frequency Radiation from Tycho Brahe's Supernova (A.D. 1572)

@article{Brown1952RadioFrequencyRF,
  title={Radio-Frequency Radiation from Tycho Brahe's Supernova (A.D. 1572)},
  author={R. Hanbury Brown and Cyril Hazard},
  journal={Nature},
  year={1952},
  volume={170},
  pages={364-365}
}
SINCE the discovery of localized sources of extraterrestrial radio-frequency radiation in 19481, surveys have been carried out over the whole sky2,3, and the positions and intensities of about one hundred sources are now known. Although a few of these sources have been identified with extra-galactic nebulæ3–5 it is generally considered that the majority must lie within the Galaxy with a distribution, and perhaps a density, similar to that of the common visual stars6. However, it has not yet… 
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