Shades of Blues and Greens in the Chronicle of John of Nikiou

Booth, Phil

doi:10.1515/byzs.2011.013

Cited by 10 publications

(2 citation statements)

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“…122-124;Roberto 2005, pp. 546-551;Treadgold 2007, p. 312; for other similarities between John of Antioch and John of Nikiû see Roberto 2010, p. 57;Booth 2011). When he edited the section on Maurice's reign, he could have used Antiochene records and his own experience in Antioch.…”

Section: Summary and Discussionmentioning

confidence: 99%

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The Variable Earth’s Rotation in the 4th–7th Centuries: New ΔT Constraints from Byzantine Eclipse Records

Hayakawa¹,

Murata²,

Sôma³

2022

PASP

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As one of the greatest astronomical spectacles, total solar eclipses have long been a subject of scientific interest and have been recorded by numerous civilizations over the millennia. These records are an essential reference for constraining and reconstructing Earth’s variable rotation (ΔT) prior to the 17th century. However, ΔT reconstructions for the 4th–7th centuries have significant uncertainties, mainly owing to a data scarcity. Here, we analyze Byzantine historical sources with reports of total solar eclipses along the Eastern Mediterranean coasts and add probable ΔT constraints on their basis. We examined five cases of total solar eclipses in 346, 418, 484, 601, and 693 CE, identified times and locations of the observations, and compared them with the existing ΔT spline curve to derive new ΔT constraints. Our results probably tighten ΔT variability in 346 CE, show a larger ΔT range in 418 CE, and give smaller ΔT ranges in 484, 601, and 693 CE. Our study tightens the existing ΔT variations and occasionally support some ΔT constraints that slightly depart from the ΔT spline curve in the latest reconstructions. Our results are consistent with contemporary ΔT constraints from other studies and offer an improved understanding of Earth’s variable rotation.

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Section: Summary and Discussionmentioning

confidence: 99%

“…140-141). The original version has been lost, and what survives is a 17th century Ge'ez translation of an Arabic paraphrase of the original (Booth 2011;Brown & Elagina 2018;Elagina 2018).…”

Section: Total Solar Eclipse On 601 March 10mentioning

confidence: 99%