Frequent flaring in the TRAPPIST-1 system - unsuited for life?

Understand

We analyze short cadence K2 light curve of the TRAPPIST-1 system.

• Fourier analysis of the data suggests $P_\mathrm{rot}=3.295\pm0.003$ days.
• The light curve shows several flares, of which we analyzed 42 events, these have integrated flare energies of $1.26\times10^{30}-1.24\times10^{33}$ ergs.
• Approximately 12% of the flares were complex, multi-peaked eruptions.