Sunspot observations by Hisako Koyama: 1945–1996
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DOI: 10.1093/mnras/stz3345
Abstract: The sunspot record is the only observational tracer of solar activity that provides a fundamental, multi-century reference. Its homogeneity has been largely maintained with a succession of long-duration visual observers. In this paper, we examine… read more here.
Keywords: observations hisako; hisako koyama; 1945 1996; sunspot observations ... See more keywords