Evidence of a White-Light Flare on 10 September 1886
We present evidence of the occurrence of a white-light flare on 10 September 1886. It represents the third such rare event reported in the history of astronomy. The flare was mentioned by Valderrama (L’Astronomie5, 388, 1886). In this article we have used the original logbook of the observer, J. Valderrama y Aguilar, an amateur astronomer who lived in Madrid and Santa Cruz de Tenerife at that time.
KeywordsSolar flares White-light flares
We thank the IAC librarian, M. Gómez, for putting at our disposal the materials used in this study. They were found by J.A. Bonet, and his participation in the early phases of the project is acknowledged. The support from the Junta de Extremadura (Research Group Grants GR15137) and from the Ministerio de Economía y Competitividad of the Spanish Government (AYA2014-57556-P and AYA2013-47742-C04-02-P) is gratefully acknowledged.
Disclosure of Potential Conflicts of Interest
The authors declare that they have no conflicts of interest.
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