Author:
Alania M. V.,Shatashvili L. Kh.,Dorman L. I.
Abstract
This is an attempt to determine the effective size of the interplanetary medium responsible for the 27-day variation in the cosmic-ray intensity. Neutron data from Mt. Norikura and Climax have been correlated with sunspot data for 80 solar revolutions beginning July 1957. The size of the modulating region was estimated from the lag between the sunspot number and the cosmic-ray variations, assuming the solar wind speed to be 400 km s−1, and it was found to be comparable with, or less than, the effective size of the modulating region causing the 11-year variation.
Publisher
Canadian Science Publishing
Subject
General Physics and Astronomy
Cited by
5 articles.
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