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
Ellis, G. R. A., Green, R. J., and Hamilton, P. A., Austral. J. Phys., 16, 545 (1963).
Shain, C. A., Komesaroff, M. M., and Higgins, C., Austral. J. Phys., 14, 508 (1961).
Hoyle, F., and Ellis, G. R. A., Austral. J. Phys., 16, 1 (1963).
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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DOI: https://doi.org/10.1038/204272a0
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