Sunspot observations by Hisako Koyama: 1945–1996

ABSTRACT Sunspot records are the only observational tracer of solar activity that provides a fundamental, multicentury reference. Its homogeneity has been largely maintained with a succession of long-duration visual observers. In this article, we examine observations of one of the primary reference...

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Veröffentlicht in:	Monthly notices of the Royal Astronomical Society 2020-03, Vol.492 (3), p.4513-4527
Hauptverfasser:	Hayakawa, Hisashi, Clette, Frédéric, Horaguchi, Toshihiro, Iju, Tomoya, Knipp, Delores J, Liu, Huixin, Nakajima, Takashi
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomy & Astrophysics Physical Sciences Science & Technology
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