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The reconstruction of past solar activity is aided by studying historical accounts, which help us understand the Sun's behavior over longer timescales. Here, the authors describe how these records can be used to obtain information relevant to today's research.
The Sun is nowadays observed using di?erent techniques that provide an almost instantaneous 3-D map of its structure. Of particular interest is the studyofthevariabilityinthesolaroutputproducedbythedissipationofm- netic energy on di?erent spatial and temporal scales - the so-called magnetic activity. The 11-year cycle is the main feature describing this phenomenon. Apart from its intrinsic scienti?c interest, this topic is worth studying because of the interaction of such processes with the terrestrial environment. A ?eet of space and ground-based observatories are currently monitoring the behaviour of our star on a daily basis. However, solar activity varies not only on this decadal time-scale, as has been attested mainly through two methods: (a) records of the number of sunspots observed on the solar surface from 1610, and (b) the records of 14 10 cosmogenic isotopes, such as Cand Be, measured in tree-rings and i- cores, respectively. The study of the long-term behaviour of solar activity may be comp- mented by the study of historical accounts describing phenomena directly or indirectly related to solar activity. Numerous scienti?c and non-scienti?c d- uments have reported these events and we can make use of them as a proxy of solar activity in past times.
The Sun is nowadays observed using di?erent techniques that provide an almost instantaneous 3-D map of its structure. Of particular interest is the studyofthevariabilityinthesolaroutputproducedbythedissipationofm- netic energy on di?erent spatial and temporal scales - the so-called magnetic activity. The 11-year cycle is the main feature describing this phenomenon. Apart from its intrinsic scienti?c interest, this topic is worth studying because of the interaction of such processes with the terrestrial environment. A ?eet of space and ground-based observatories are currently monitoring the behaviour of our star on a daily basis. However, solar activity varies not only on this decadal time-scale, as has been attested mainly through two methods: (a) records of the number of sunspots observed on the solar surface from 1610, and (b) the records of 14 10 cosmogenic isotopes, such as Cand Be, measured in tree-rings and i- cores, respectively. The study of the long-term behaviour of solar activity may be comp- mented by the study of historical accounts describing phenomena directly or indirectly related to solar activity. Numerous scienti?c and non-scienti?c d- uments have reported these events and we can make use of them as a proxy of solar activity in past times.
From the reviews: "Packed with many hundreds of references to both past and contemporary astronomical and historical literature, the book is a must for historians of science and professional astronomers and solar physicists interested in the historical reconstructions of solar activity. ... interested readers should find their money's worth. ... In The Sun Recorded Through History, long-gone solar astronomers tell us what they saw." (Paul Charbonneau, Physics Today, December, 2009) "This monograph is primarily a historical survey of solar activity from the dawn of historic observations ... to the invention of photography in 1840. ... highlight is a detailed discussion of observed sunspot minima and maxima over the past 2,000 years, and the possible contributing role of sociological factors in these observations. The illustrations are well chosen and often fascinating ... . The work will be of interest primarily to historians of astronomy and solar astronomers ... . Summing Up: Recommended. Researchers, faculty, and professionals." (R. L. Mutel, Choice, Vol. 47 (4), December, 2009)