Physics
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007soph..245..247f&link_type=abstract
Solar Physics, Volume 245, Issue 2, pp.247-249
Physics
2
Solar Magnetism, Solar Eclipses, Red Flash, Maunder Minimum
Scientific paper
The presence of the red flash at total solar eclipses requires the existence of an extended chromosphere and therefore of a photospheric magnetic network that gives rise to spicules. We draw attention to the earliest historical reports of a red flash at the 1706 and 1715 eclipses, which therefore imply a substantial, widespread photospheric field during at least the last decade of the Maunder Minimum. Our finding is consistent with reports of a persistent photospheric field throughout the Maunder Minimum from analyses of 10Be radioisotope evidence. We note, however, that the last decade may not be representative of conditions throughout the roughly 1645 1715 extent of that prolonged activity minimum.
Eddy J.
Foukal Peter
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