Records of sunspot and aurora during CE 960–1279 in the Chinese chronicle of the Sòng dynasty

  title={Records of sunspot and aurora during CE 960–1279 in the Chinese chronicle of the S{\`o}ng dynasty},
  author={Hisashi Hayakawa and Harufumi Tamazawa and Akito Davis Kawamura and Hiroaki Isobe},
  journal={Earth, Planets and Space},
Records of sunspot and aurora observations in pre-telescopic historical documents can provide useful information about solar activity in the past. This is also true for extreme space weather events, as they may have been recorded as large sunspots observed by the naked eye or as low-latitude auroras. In this paper, we present the results of a comprehensive survey of records of sunspots and auroras in the Sòngshǐ, a Chinese formal chronicle spanning the tenth to the thirteenth century. This… 
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