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Positions of Three Discrete Sources of Galactic Radio-Frequency Radiation


IN a recent communication1 an account was given of the discovery of a number of discrete sources of galactic radio-frequency radiation. Accurate measurements of the position of three of these sources have since been made from sites on the east and west coasts of New Zealand and on the east coast of Australia. The technique employed was to observe the sources at rising or setting, with an aerial on a high cliff overlooking the sea. These observations, when corrected for atmospheric refraction, allow the path of a source above the horizon to be plotted, and the time of its rising and setting—and hence its celestial co-ordinates—to be determined.

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BOLTON, J., STANLEY, G. & SLEE, O. Positions of Three Discrete Sources of Galactic Radio-Frequency Radiation. Nature 164, 101–102 (1949).

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