Are Superflares on Solar Analogues Caused by Extrasolar Planets

摘要: Stellar flares with 102-107 times more energy than the largest solar flare have recently been detected from nine normal F and G main-sequence stars by Schaefer, King, Deliyannis. These superflares durations of hours to days are visible at least X-ray optical frequencies. The absence world-spanning aurorae in historical records anomalous extinctions geological record indicates that our Sun likely does not suffer superflares. In seeking explain this new phenomenon, we struck its similarity large stellar on RS Canum Venaticorum binary systems, which caused magnetic reconnection events associated tangling fields between two stars. superflare certainly class, although propose a similar mechanism. That is, primary star close-in Jovian planet. Thus, invoking only known planetary properties scenarios, can energies, durations, spectra as well why such events.