(当然のことながら)黒点も大きくなっているようで、黒点(とオーロラ)の中国における観察記録について https://t.co/PGqTUYqg6T
@skdh If you’re curious about how written accounts of miyake events, such as the Song Dynasty’s records of solar flares, line up with tree ring carbon-14 data, check out this paper: https://t.co/VvT47drUvo
Records of sunspot and aurora during CE 960–1279 in the Chinese chronicle of the Sòng dynasty Hisashi Hayakawa1*, Harufumi Tamazawa2, Akito Davis Kawamura2 and Hiroaki Isobe3, https://t.co/XIqs6nlTBw #sunspots
@Tsoup2 南宋の歴史書(宋史)には1204年(嘉泰四年)の2月21日(正月癸未)に黒点「日中有黑子」、3月29日(二月庚申)に「夜有赤氣亙天」、ほかにも「白氣」が12月に2度記録されてます。記録に残っていないからといってなかったとは言い切れないですし。 昔書いた論文 https://t.co/Dp4jsYndgw
TIL Before telescopes, Chinese astronomers in the Song dynasty made naked #eye observations of solar phenom... https://t.co/Cnj2MrEsTP
On 11 January CE 1077, in the sun were black spots as large as plums. They disappeared on 22. https://t.co/m1VsD0wH4w (PDF)
中国の資料でも2015年に同じような論文が出ているな。Records of sunspot and aurora during CE 960–1279 in the Chinese chronicle of the Sòng https://t.co/LzfiRufisj
On 11 January CE 1077, in the sun were black spots as large as plums. They disappeared on 22. https://t.co/m1VsD0wH4w (PDF)
@Mad_Science_Guy an example from China https://t.co/BlH8OILtVP
RT @aDAVISk: 宋代のオーロラ記録の共著論文、論文内のアクセスランキングにて、年間で上位一桁、歴代でも36位と奮闘中。 https://t.co/JNLqgYSIKv
よし年間8位に上がった。皆さんのアクセスのおかげです^ ^ https://t.co/JNLqgYSIKv
宋代のオーロラ記録の共著論文、論文内のアクセスランキングにて、年間で上位一桁、歴代でも36位と奮闘中。 https://t.co/JNLqgYSIKv
そして某Hykw君が、文学研究科の所属ながら、既に宇宙天気分野の一員として重要な存在となりつつある事を改めて実感。今後の研究の発展も楽しみです(^^) 論文(EPS誌):https://t.co/Yp2dom31Fm
"Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty" PDF online: http://t.co/vKLfEnhter
"Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty" PDF online: http://t.co/vKLfEnhter
"Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty" PDF online: http://t.co/vKLfEnhter
"Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty" PDF online: http://t.co/vKLfEnhter
"Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty" PDF online: http://t.co/vKLfEnhter
"Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty" PDF online: http://t.co/vKLfEnhter
Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty http://t.co/8VoAvvidWy
#archeoastronomy "Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty" See http://t.co/fO8xx9pGJ4
Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty. (arXiv... http://t.co/VsTnJv2Q8A #physics
Technoarchaeology of Sunspot records from China... http://t.co/auG95D6BCj
Records of sunspot & aurora during CE 960-1279 in Chinese chronicle of Song dynasty | #science #astrophysics #physics http://t.co/b24LFamGNm
Records of sunspot & aurora during CE 960-1279 in Chinese chronicle of Song dynasty | #science #astrophysics #physics http://t.co/b24LFamGNm
Records of sunspot & aurora during CE 960-1279 in Chinese chronicle of Song dynasty | #science #astrophysics #physics http://t.co/b24LFamGNm
Records of sunspot and aurora during CE 960-1279 in China. [Sunspots with the naked-eye? Auroras?] http://t.co/i1jpwF8kzc
Records of sunspot and aurora during CE 960-1279 in China. [Sunspots with the naked-eye? Auroras?] http://t.co/i1jpwF8kzc
Technoarchaeology of Sunspot records from China... http://t.co/auG95D6BCj
[1506.03715] Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the... http://t.co/U1edneP94N
Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty... http://t.co/amV78EnKvz
Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty http://t.co/8VoAvvidWy
Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty http://t.co/8VoAvvidWy
Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty http://t.co/8VoAvvidWy
Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty http://t.co/8VoAvvidWy
Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty http://t.co/8VoAvvidWy
Records of sunspot and aurora during CE 960-1279 in China. [Sunspots with the naked-eye? Auroras?] http://t.co/i1jpwF8kzc
Records of sunspot and aurora during CE 960-1279 in China. [Sunspots with the naked-eye? Auroras?] http://t.co/i1jpwF8kzc
Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty http://t.co/djPpqMKrab
Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty.... http://t.co/VsTnJv2Q8A #space #physics
Records of sunspot and aurora during CE 960-1279 in the Chinese chronicle of the Song dynasty. http://t.co/EAjZ4K2kM5