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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 9.

Temporal evolution of pre-flare-subtracted spectra during the superflare on 2022 April 10 (E1). Observations were carried out with an exposure time of 2 (or 1) minute(s) and a readout time of 17 s. The 1σ continuum-level scattering in each spectrum is represented by error bars. The blue line corresponds to the results of fitting with a single-component Gaussian, while the red and green lines denote the results of fitting with a two-component Gaussian. The fitting process was conducted using scipy.optimize.least_squares, taking into account the error bars.

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