The reporter learned on the 5th that a research team composed of the National Astronomical Observatory of the Chinese Academy of Sciences, the Zijinshan Astronomical Observatory and Nanjing University, based on the "Xihe" satellite, carried out a zonal integrated spectral analysis of different physical processes in the source area of the solar eruption, successfully deconstructed the characteristics of different physical processes such as the rise and fall of the solar filament, the compression and evaporation of chromospheres in the flare zone area, and the time-series spectral characteristics after the mixing of various processes. This provides key clues for deconstructing the physical processes related to the explosive source region of stellar atmospheric activity from the overall H α spectrum data of stars (the red emission lines generated by hydrogen atom electron transitions). The relevant results were recently published in the international academic journal Astrophysical Journal. The sun is the closest star to the earth. As a celestial body with a "violent temper", the Sun often experiences intense energy release phenomena, such as solar flares, solar stripe eruptions, and coronal mass ejections. According to Hou Yijun, the corresponding author of the paper and a project researcher at the National Astronomical Observatory, similar stellar atmospheric burst activities also exist in star planet systems outside the solar system. However, due to the lack of long-term continuous monitoring of individual stars and spatially resolved magnetic fields and multi band observations, our understanding of their origin and development is limited. The full day H α spectral observations of the 'Xihe' spacecraft provide an opportunity to conduct comparative studies between the Sun and stars and uncover the mystery of the source regions of stellar atmospheric eruptions. ”Hou Yijun said. In this study, the team analyzed five different types of solar eruption events observed by the "Xihe" spacecraft in 2024. Hou Yijun told reporters: "Unlike before, based on the H α imaging observations and spectral inversion velocity field results of the 'Xihe' spacecraft, we conducted integrated spectral analysis on the differentiated regions of solar burst sources, revealing the temporal spectral characteristics corresponding to different physical processes of solar bursts. ”Liu Xiaofeng, the first author of the paper and a doctoral student jointly trained by the Zijinshan Observatory of the Chinese Academy of Sciences and the National Astronomical Observatory, introduced that the team found that in the flare zone, the spatially integrated H α spectrum showed continuous linear radiation enhancement, spectral line broadening and red wing asymmetry, corresponding to the chromospheric compression process; In different regions of the evolution stages of the solar dark streak, the spatially integrated H α spectrum exhibits a characteristic change from accelerated blue shift absorption to slowed blue shift absorption, and then to red shift absorption, which fully records the acceleration, deceleration, and retreat processes of the dark streak cold plasma. The 'Xihe' spacecraft provides rich information on the dynamics of plasma in the lower atmosphere of the solar eruption source region, and this study explores the scientific value of the 'Xihe' spacecraft in the field of comparative research between the sun and stars. ”The author of the paper, Professor Li Chuan from Nanjing University, said. (New Society)