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Title: Frequent Flaring in the TRAPPIST-1 System—Unsuited for Life?

Abstract

We analyze the K2 light curve of the TRAPPIST-1 system. The Fourier analysis of the data suggests P {sub rot} = 3.295 ± 0.003 days. The light curve shows several flares, of which we analyzed 42 events with integrated flare energies of 1.26 × 10{sup 30}–1.24 × 10{sup 33} erg. 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, which makes these less favorable for hosting life.

Authors:
; ; ; ;  [1]
  1. Konkoly Observatory, MTA CSFK, H-1121 Budapest, Konkoly Thege M. út 15-17 (Hungary)
Publication Date:
OSTI Identifier:
22663542
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 841; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; APPROXIMATIONS; CORRELATIONS; FOURIER ANALYSIS; MASS; MODULATION; STARS; STELLAR FLARES; VISIBLE RADIATION

Citation Formats

Vida, K., Kővári, Zs., Pál, A., Oláh, K., and Kriskovics, L., E-mail: vidakris@konkoly.hu. Frequent Flaring in the TRAPPIST-1 System—Unsuited for Life?. United States: N. p., 2017. Web. doi:10.3847/1538-4357/AA6F05.
Vida, K., Kővári, Zs., Pál, A., Oláh, K., & Kriskovics, L., E-mail: vidakris@konkoly.hu. Frequent Flaring in the TRAPPIST-1 System—Unsuited for Life?. United States. doi:10.3847/1538-4357/AA6F05.
Vida, K., Kővári, Zs., Pál, A., Oláh, K., and Kriskovics, L., E-mail: vidakris@konkoly.hu. Thu . "Frequent Flaring in the TRAPPIST-1 System—Unsuited for Life?". United States. doi:10.3847/1538-4357/AA6F05.
@article{osti_22663542,
title = {Frequent Flaring in the TRAPPIST-1 System—Unsuited for Life?},
author = {Vida, K. and Kővári, Zs. and Pál, A. and Oláh, K. and Kriskovics, L., E-mail: vidakris@konkoly.hu},
abstractNote = {We analyze the K2 light curve of the TRAPPIST-1 system. The Fourier analysis of the data suggests P {sub rot} = 3.295 ± 0.003 days. The light curve shows several flares, of which we analyzed 42 events with integrated flare energies of 1.26 × 10{sup 30}–1.24 × 10{sup 33} erg. 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, which makes these less favorable for hosting life.},
doi = {10.3847/1538-4357/AA6F05},
journal = {Astrophysical Journal},
number = 2,
volume = 841,
place = {United States},
year = {Thu Jun 01 00:00:00 EDT 2017},
month = {Thu Jun 01 00:00:00 EDT 2017}
}