RT Journal Article SR Electronic T1 Core Concept: What are the chances of a hazardous solar superflare? JF Proceedings of the National Academy of Sciences JO Proc Natl Acad Sci USA FD National Academy of Sciences SP 23368 OP 23370 DO 10.1073/pnas.1917356116 VO 116 IS 47 A1 Battersby, Stephen YR 2019 UL http://www.pnas.org/content/116/47/23368.abstract AB