Confirmation of Constraints on ΔT from Multiple European and Arab Reports of Medieval Eclipses
Abstract
Hitherto unused reports of medieval European and Arab reports of eclipses, emanating from outside as well as inside the paths of totality, are analysed for the determination of ΔT. These results support our conclusions for the variations in the Earth’s rate of rotation published in L. V. Morrison, F. R. Stephenson, C. Y. Hohenkerk and M. Zawilski, 2021, “Addendum 2020 to Measurement of the Earth’s Rotation: 720 BC to AD 2015.” Proceedings of the Royal Society of London A , 478. https://doi.org/10.1098/rspa.2020.0776 .
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- Authors
- Morrison, L. V., Hohenkerk, C. Y., & Zawilski, M.
- Affiliations
- Royal Observatory in Greenwich (GB)
- Formerly HM Nautical Almanac Office, UK
- IOTA/ES (International Occultation Timing Association/European Section), Białystok, Poland
- Corresponding author
- Morrison, Leslie V.
- Venue
- Journal for the History of Astronomy
- Publisher
- SAGE Publications
- Published
- 2026-08
- Volume
- 57
- Issue
- 3
- Pages
- 314-333
- ISSN
- 0021-8286 (ISSN-L)
- 1753-8556
- OpenAlex
- W7172407590
- Cited by
- 0
- References
- 0
- FWCI
- 0.00
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal for the History of Astronomy (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Historical Astronomy and Related Studies
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › History and Developments in Astronomy
- Social Sciences › Geography, Planning and Development › Historical Geography and Cartography
- Keywords
- Earth rotation rate, solar eclipse, Arabic astronomical texts
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