Fig. 10.
Single confirmed flare candidate in M 67 on the K1 dwarf EPIC 211434440 (red line). Blue: pre-search Data Conditioning (PDCSAP) flux, that is, the light curve before K2SC de-trending. Black: de-trended light curve that was searched for flares with AltaiPony. The amplitude of the flare is 2%, and the energy emitted in the Kepler band is EKp = 6.25 × 1033 erg. The flare is small enough to be barely detectable, so its energy is uncertain, and most likely underestimated due to the low time sampling of the light curve.
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