Reconstruction of pretelescopic and early telescopic solar activity cycles from auroral records
Kristof Petrovay, Laura G Magyar, Hisashi Hayakawa · 2026
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Description
Kristof Petrovay, Laura Magyar, and Hisashi Hayakawa rebuild early sun cycles from sky glow records in a 2026 study. Glows at low latitudes mark the largest space storms, which spring from sun activity. Such records are sparse, though, and storm rates do not track sunspot counts in a neat line.
The team ran many fake cycles on a computer to find the best read method. When the mean storm rate hits about three per year, the method pins cycle lows within two years most of the time. That bar held for much of one busy past era. With it, they rebuild eight cycles from 1560 to 1640 and check them against other records with good match.
Catalog record
| CREATOR | Kristof Petrovay, Laura G Magyar, Hisashi Hayakawa |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 33 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |