Stellar Superflares Observed Simultaneously with Kepler and XMM-Newton

  title={Stellar Superflares Observed Simultaneously with Kepler and XMM-Newton},
  author={Alexey A. Kuznetsov and Dmitrii Y. Kolotkov},
  journal={The Astrophysical Journal},
Solar and stellar flares are powerful events that produce intense radiation across the electromagnetic spectrum. Multiwavelength observations are highly important for understanding the nature of flares, because different flare-related processes reveal themselves in different spectral ranges. To study the correlation between thermal and nonthermal processes in stellar flares, we have searched the databases of Kepler (optical observations) and XMM-Newton (soft X-rays) for the flares observed… 

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