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

Abstract

We analyze short cadence K2 light curve of the TRAPPIST-1 system. Fourier analysis of the data suggests $P_{\mathrm{rot}}=3.295\pm 0.003$ days. The light curve shows several flares, of which we analyzed 42 events, these have integrated flare energies of $1.26\times 10^{30}-1.24\times 10^{33}$ ergs. Approximately 12% of the flares were complex, multi-peaked eruptions. The flaring and the possible rotational modulation shows no obvious correlation. The flaring activity of TRAPPIST-1 probably continuously alters the atmospheres of the orbiting exoplanets, making these less favorable for hosting life.

8 pages, 6 figures, accepted in ApJ

References in corpus (12)

• Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1
• Kepler Flares I. Active and Inactive M dwarfs
• A seven-planet resonant chain in TRAPPIST-1
• Kepler Flares II: The Temporal Morphology of White-Light Flares on GJ 1243
• Reconnaissance of the TRAPPIST-1 exoplanet system in the Lyman-$\alpha$ line
• MOST Observations of our Nearest Neighbor: Flares on Proxima Centauri
• UV Surface Habitability of the TRAPPIST-1 System
• Influence of Stellar Flares on the Chemical Composition of Exoplanets and Spectra
• Spots, plages, and flares on lambda Andromedae and II Pegasi
• Kepler Flares IV: A Comprehensive Analysis of the Activity of the dM4e Star GJ 1243
• Pushing the limits: K2 observations of the trans-Neptunian objects 2002 GV31 and (278361) 2007 JJ43
• Optical flares from the faint mid-dM star 2MASS J00453911+4140396

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