Habitable Zones & Global Climate

Frequent Flaring in the TRAPPIST-1 system – Unsuited For Life?

By Keith Cowing
Press Release
March 30, 2017
Filed under
Frequent Flaring in the TRAPPIST-1 system – Unsuited For Life?
Flaring in the TRAPPIST-1 system

We analyze short cadence K2 light curve of the TRAPPIST-1 system. Fourier analysis of the data suggests Prot=3.295±0.003 days.

The light curve shows several flares, of which we analyzed 42 events, these have integrated flare energies of 1.26×1030−1.24×1033 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.

Krisztián Vida, Zsolt Kővári, András Pál, Katalin Oláh, Levente Kriskovics
(Submitted on 29 Mar 2017)

Comments: 7 pages, 6 figures, submitted to ApJ
Subjects: Solar and Stellar Astrophysics (astro-ph.SR); Earth and Planetary Astrophysics (astro-ph.EP)
Cite as: arXiv:1703.10130 [astro-ph.SR] (or arXiv:1703.10130v1 [astro-ph.SR] for this version)
Submission history
From: Krisztián Vida
[v1] Wed, 29 Mar 2017 16:45:50 GMT (9371kb,D)

Explorers Club Fellow, ex-NASA Space Station Payload manager/space biologist, Away Teams, Journalist, Lapsed climber, Synaesthete, Na’Vi-Jedi-Freman-Buddhist-mix, ASL, Devon Island and Everest Base Camp veteran, (he/him) 🖖🏻