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Multiwavelength Campaign Observations of a Young Solar-type Star, EK Draconis. I. Discovery of Prominence Eruptions Associated with Superflares

  • Authors: Kosuke Namekata, Vladimir S. Airapetian, Pascal Petit, Hiroyuki Maehara, Kai Ikuta, Shun Inoue, Yuta Notsu, Rishi R. Paudel, Zaven Arzoumanian, Antoaneta A. Avramova-Boncheva, Keith Gendreau, Sandra V. Jeffers, Stephen Marsden, Julien Morin, Coralie Neiner, Aline A. Vidotto, Kazunari Shibata

Kosuke Namekata et al 2024 The Astrophysical Journal 961 .

  • Provider: AAS Journals

Caption: Figure 11.

Temporal evolution of the blueshifted emission line components for (upper) flare E1 on 2022 April 10 and (lower) superlare E2 on 2022 April 16. Left: Temporal variation in EW (note that positive values mean emissions); middle: temporal variation in velocity; right: temporal variation in velocity dispersion (Gaussian’s standard deviation σ). The blue squares represent the result of fitting with a one-component Gaussian, while the red and green lines represent the blueshifted component and the central component, respectively, from the two-component Gaussian fit.

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