“羲和”号揭示太阳“暴脾气”的时序光谱特征

Core Insights - A research team from the National Astronomical Observatories of China, Zijinshan Observatory, and Nanjing University successfully analyzed solar eruption processes using the "Xihe" satellite, providing key insights into the physical processes involved in solar activities [1][2] Group 1: Research Findings - The study utilized Hα spectral analysis to deconstruct various physical processes during solar eruptions, including the uplift and descent of solar dark bars and the compression and evaporation in flare regions [1] - The research revealed that the Hα spectrum in flare regions showed continuous line center radiation enhancement, spectral line broadening, and red wing asymmetry, corresponding to the chromosphere compression process [2] - The analysis of different evolutionary stages of solar dark bars indicated a transition from accelerated blue shift absorption to decelerated blue shift absorption, and finally to red shift absorption, capturing the dynamics of cold plasma in the dark bars [2] Group 2: Scientific Significance - The findings from the "Xihe" satellite provide rich information on the dynamics of the lower atmospheric plasma processes during solar eruptions, highlighting its scientific value in comparative studies between the Sun and other stars [2]