Flaring Activity of Proxima Centauri from TESS Observations: Quasiperiodic Oscillations during Flare Decay and Inferences on the Habitability of Proxima b

@article{Vida2019FlaringAO,
  title={Flaring Activity of Proxima Centauri from TESS Observations: Quasiperiodic Oscillations during Flare Decay and Inferences on the Habitability of Proxima b},
  author={Kriszti{\'a}n Vida and Katalin Ol'ah and Zs. Kőv{\'a}ri and Lidia van Driel-Gesztelyi and Attila Mo'or and Andr'as P'al},
  journal={The Astrophysical Journal},
  year={2019},
  volume={884}
}
We analyze the light curve of the M5.5 dwarf Proxima Centauri obtained by the Transiting Exoplanet Survey Satellite (TESS) in Sectors 11 and 12. In the ≈50 day long light curve we identified and analyzed 72 flare events. The flare rate was 1.49 events per day; in total, 7.2% of the observing time was classified as flaring. The estimated flare energies were on the order of 1030–1032 erg in the TESS passband (≈4.8× higher in bolometric energies, but on the same order of magnitude). Most of the… 

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