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History of Geo- and Space Sciences An open-access journal
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HGSS | Articles | Volume 11, issue 1
Hist. Geo Space. Sci., 11, 81–92, 2020
https://doi.org/10.5194/hgss-11-81-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Hist. Geo Space. Sci., 11, 81–92, 2020
https://doi.org/10.5194/hgss-11-81-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  20 Apr 2020

20 Apr 2020

Provenance of the cross sign of 806 in the Anglo-Saxon Chronicle: a possible lunar halo over continental Europe?

Yuta Uchikawa et al.

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Short summary
A graphical record of a cruciform appearance in the night sky and possible lunar-halo display of 806 CE in the Anglo-Saxon Chronicle is philologically traced back to mid-ninth-century continental manuscripts, and a probable observational site is identified as around Sens in France. Possible lunar halos are examined by numerical ray tracing. Cruciform halos are shown to be faint and rare and thus notable. Halos from physically credible cloud ice crystals reproduce the manuscript renditions.
A graphical record of a cruciform appearance in the night sky and possible lunar-halo display of...
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