Uncovering Intense Ancient Solar Activity from Naked-eye Observations of Egg-like Sunspots
Uncovering Intense Ancient Solar Activity from Naked-eye Observations of Egg-like Sunspots
复制标题
从蛋状太阳黑子的肉眼观察中揭示强烈的古代太阳活动
DOI：
10.3847/1538-4357/ac2152
复制
发表时间：
2021-11
期刊：
影响因子：
--
通讯作者：
Huiduan Li
中科院分区：
文献类型：
--
作者：
Hongrui Wang;Huiduan Li
用文言文记载的古代太阳黑子记录，为研究古代太阳活动提供了重要信息。中国人记录了14次形似鸡蛋的太阳黑子观测情况（以下简称“鸡蛋记录”；这里用“鸡蛋”一词来大致表示…… ）
Ancient sunspot records written in classical Chinese provide important information regarding ancient solar activity. The Chinese recorded 14 observations of sunspots that resembled an egg (hereafter, egg record; the word egg is used to represent approximate sunspot sizes) before 1000 CE. However, the egg records in classical Chinese were too short to provide sufficient sunspot details. This study was conducted to decode egg records from 1769 and 1917 through telescopic sunspot observations. The results of our decoding show that egg-like sunspots were generally used by observers in East Asia to represent a very large sunspot group with an approximately elliptical outline. An egg record generally served as a marker of intense solar activity. Three egg records (in 1278, 1769, and 1917) were observed to be close to the solar maxima, with the time difference being smaller than 1 yr. Some egg records could thus be used to identify the solar maxima. The mean time difference between 10 egg records and the nearest solar maxima is 2 yr. Therefore, egg records can provide necessary information for uncovering additional intense solar activity from ancient times.
登录
查看更多内容
影响因子：
20.9
作者：
Hathaway DH
通讯作者：
Hathaway DH
影响因子：
2.8
作者：
C. Karoff;Carsten Sønderskov;Jørgensen;V. S. Pavai;R. Arlt
通讯作者：
C. Karoff;Carsten Sønderskov;Jørgensen;V. S. Pavai;R. Arlt
影响因子：
2.8
作者：
C. Jørgensen;C. Karoff;V. Senthamizh Pavai;R. Arlt
通讯作者：
C. Jørgensen;C. Karoff;V. Senthamizh Pavai;R. Arlt
影响因子：
2.8
作者：
H. Hayakawa;D. Willis;Kentaro Hattori;Y. Notsu;M. Wild;C. Karoff
通讯作者：
H. Hayakawa;D. Willis;Kentaro Hattori;Y. Notsu;M. Wild;C. Karoff
影响因子：
2.8
作者：
Hongrui Wang;Huiduan Li
通讯作者：
Hongrui Wang;Huiduan Li