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Published in 2018 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-018-3332-z
Abstract: The New International Sunspot Numbers (NISNs) have been successfully compiled and can be downloaded from the World Data Center-Sunspot index and Long-term Solar Observations, Royal Observatory of Belgium, Brussels. The periods in these NISNs have…
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Keywords:
lomb scargle;
year;
international sunspot;
scargle periodogram ... See more keywords