Akito Davis Kawamura

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

Records of sunspot and aurora observations in pre-telescopic historical documents can provide useful information about solar activity in the past.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 chronicle contains a record of continuous observations with well-formatted reports conducted as a policy of the government. A brief comparison of the frequency of observations of sunspots and auroras and the observations of radioisotopes as an indicator of the solar activity during corresponding periods is provided. This paper is the first step of our project in which we survey and compile the records of sunspots and auroras in historical documents from various locations and languages, ultimately providing it to the science community as online data.

East Asian observations of low-latitude aurora during the Carrington magnetic storm

The magnetic storm around 1859 September 2, caused by so-called Carrington flare, was the most intense in the history of modern scientific observations, and hence is considered to be the benchmark event for space weather. The magnetic storm caused worldwide observations of auroras even at very low latitudes such as Hawaii, Panama, or Santiago, and the available magnetic field measurement at Bombay, India, showed two peaks: the main was the Carrington event which occurred in day time in East Asia, and a second storm after the Carrington event which occurred at night in East Asia. In this paper, we present a result from surveys of aurora records in East Asia, which provides new information of the aurora activity of this important event. We found some new East Asian records of low latitude aurora observations caused by the storm which occurred after the Carrington event. The size of the aurora belt of the second peak of the Carrington magnetic storm was even wider than usual low-latitude aurora events.

Aurora candidates from the chronicle of Qíng dynasty in several degrees of relevance

We present the result of the survey of sunspots and auroras in

Earliest datable records of aurora-like phenomena in the astronomical diaries from Babylonia

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Long-lasting Extreme Magnetic Storm Activities in 1770 Found in Historical Documents

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Historical space weather monitoring of prolonged aurora activities in Japan and in China

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The earliest drawings of datable auroras and a two-tail comet from the Syriac Chronicle of Zūqnīn

dynasty, for the period of 1559-1912 CE, as a sequel of the series of works surveying historical sunspot and aurora records, and providing online data to the scientific community regarding the attained results. In total of this

Records of auroral candidates and sunspots in Rikkokushi, chronicles of ancient Japan from early 7th century to 887

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A great space weather event in February 1730

survey, we found 111 records of night-sky luminous events with the keywords such as vapor (

Unusual rainbow and white rainbow: A new auroral candidate in oriental historical sources

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