Abstract
EXTENSIVE air showers have been recorded at Auckland (altitude 40 m.) during the period February 1951–February 1952 inclusive, with three counter trays each of sensitive area 2,360 cm.2 placed at the corners of an equilateral triangle with 4 m. sides. About 3 × 105 events have been recorded. Averaged over the year, the results show a solar diurnal variation of 1.46 ± 0.16 per cent (first Fourier amplitude with statistical probable error), with the maximum at 2.9 ± 0.4 hr. local solar time. This correlates well with temperature.
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Daudin, A., and Daudin, M. J., C.R. Acad. Sci., Paris, 234, 1551 (1952).
Ballario, C., Brunelli, B., de Marco, A., and Martelli, G., Nuovo Cim., 8, 587 (1951); see also Phys. Rev., 83, 666 (1951).
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FARLEY, F., STOREY, J. Sidereal Correlation of High-Energy Cosmic Rays. Nature 173, 445 (1954). https://doi.org/10.1038/173445a0
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DOI: https://doi.org/10.1038/173445a0
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