Revisited reference solar proton event of 23-Feb-1956: Assessment of the cosmogenic-isotope method sensitivity to extreme solar events

Ilya G. Usoskin, Sergey A. Koldobskiy, Gennady A. Kovaltsov +4

Our direct knowledge of solar eruptive events is limited to several decades and does not include extreme events, which can only be studied by the indirect proxy method over millenn…