This research paper presents an analysis of three superflares observed on the active RS CVn binary star HR 1099 using XMM-Newton X-ray observations, revealing their temporal and spectral characteristics, providing insights into coronal properties, and highlighting the presence of the inverse-FIP effect.
고시간분해능 분광 관측을 통해 M형 왜성에서 발생하는 플레어 현상 중 일부가 빠르고 짧은 지속 시간을 가진 홍염 분출과 관련이 있음을 밝혀냈으며, 이는 기존 연구에서 저평가되었을 가능성이 있는 홍염 분출 및 CME 발생 빈도를 정확히 파악하는 데 중요한 단서를 제공한다.
High-time-resolution observations of the M-dwarf YZ Canis Minoris revealed short-duration blue and red asymmetries in the Hα line profiles during stellar flares, indicating rapid prominence eruptions that were potentially missed in previous studies with lower time cadences.
Stellar megaflares emit far more energy in the near-ultraviolet (NUV) spectrum than previously thought, challenging existing models and suggesting a need for revised understanding of particle acceleration and heating mechanisms in stellar atmospheres.
2022年11月7日に観測されたRS CVn型星HD 251108におけるスーパーフレアは、約40日間という過去最長の持続期間と、3 × 10^39 ergという過去最大のエネルギーを記録し、恒星フレアの規模とメカニズムに関する新たな知見をもたらした。
Detailed observations of a superflare on the active K-type giant star HD 251108 reveal that while significantly more powerful and longer lasting, the flare follows similar trends observed in smaller flares, suggesting a consistent underlying physical process across a wide range of flare energies.
본 연구는 아인슈타인 프로브 미션으로 관측된 M-왜성 플레어에서 채층 증발 현상을 보여주는 증거를 제시합니다.
アインシュタイン・プローブによるX線観測と地上からの追跡観測により、M型矮星で発生したスーパーフレアに伴い、彩層蒸発を示唆する、時速200~250kmの青方偏移したHα線輝線が検出された。