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Absorption of Radio Waves in the Galaxy

Abstract

OBSERVATIONS of the distribution of the galactic radio emission at 4.7 Mc/s for southern declinations1 have shown evidence of pronounced absorption by interstellar ionized hydrogen within about 20° of the galactic disk. Between declinations −20° and −50° the disk is seen as a dark band approximately one-quarter as bright as the surroundings.

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References

  1. Ellis, G. R. A., Green, R. J., and Hamilton, P. A., Austral. J. Phys., 16, 545 (1963).

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  2. Shain, C. A., Komesaroff, M. M., and Higgins, C., Austral. J. Phys., 14, 508 (1961).

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  3. Hoyle, F., and Ellis, G. R. A., Austral. J. Phys., 16, 1 (1963).

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  4. Shain, C. A., and Higgins, C. S., Austral. J. Phys., 7, 130 (1954).

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ELLIS, G., HAMILTON, P. Absorption of Radio Waves in the Galaxy. Nature 204, 272–273 (1964). https://doi.org/10.1038/204272a0

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