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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 13.

NICER X-ray spectrum of the superflare on 2022 April 16 (E2) and the corresponding fitting results (applied to the range of 0.3–8.0 keV). (a) Fitting results for the pre-flare spectrum of block 2 of E2, fitted with four apec components (each represented by a black line). The blue line represents the total model spectrum, which is used as the pre-flare spectrum in panels (b) through (f). (b–f) Observed and model spectra when flare block 3 is divided into blocks 3a through 3e. Refer to Figure 15 for the division times and Tables 5 and 6 for the fitting parameters.

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