Abstract
BETWEEN mid-July 1967 and early January 1968, part of the northern sky was regularly surveyed by interplanetary scintillation1,2 using the 4 acre aerial at the Mullard Radio Astronomy Observatory, Cambridge, to detect and measure the angular diameters of quasars and other compact radio sources at 81.5 MHz. On a number of days large increases (up to 200 per cent) in scintillation of many radio sources were observed. This article indicates that most of the enhancements tend to recur, with a period of 27 days, and that some also correlate with decreases in cosmic ray intensity.
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References
Little, L. T., and Hewish, A., Mon. Not. Roy. Astron. Soc., 134, 221 (1966).
Little, L. T., and Hewish, A., Mon. Not. Roy. Astron. Soc., 138, 393 (1968).
Dennison, P. A., and Wiseman, M., Proc. Astron. Soc. Australia, 1, 142 (1968).
Dennison, P. A., and Hewish, A., Nature, 213, 343 (1967).
Sharp, L. E., and Harris, D. E., Nature, 213, 377 (1967).
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BURNELL, J. Enhancements of Interplanetary Scintillation, Corotating Streams and Forbush Decreases. Nature 224, 356–357 (1969). https://doi.org/10.1038/224356a0
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DOI: https://doi.org/10.1038/224356a0
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