The effects on radio astronomy of the July 9, 1962, high-altitude nuclear explosion

Hornby, J. M.

Journal of Geophysical Research 69(13): 2737-2745


ISSN/ISBN: 2169-897X
DOI: 10.1029/jz069i013p02737
Accession: 061087568

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The equivalent brightness temperatures of the radio frequency radiation produced by the high-altitude nuclear explosion of July 9,1962, have been calculated. These calculations extend the work of Nakada in three principal respects. They deal with the intensity to be expected (a) by ground-based stations at high geomagnetic latitudes, (b) by a satellite whose orbit crosses the equatorial plane, and (c) at high frequencies. The results of these calculations are compared with the limiting intensities measurable by modern radio-astronomical techniques. It is shown that at frequencies of a few megacycles per second the artificial radiation must be very near the limits of detection of modern satellite-borne receivers and that it may be a hazard to accurate work on the galactic spectrum below 25 Mc/s.