Core Insights - A research team led by Professor Tian Hui from Peking University has successfully detected millisecond-level radio burst signals from stellar sunspot regions using the FAST telescope, providing a new observational method for studying stellar magnetic activity and its origins [1] Group 1: Research Findings - The detection of radio signals indicates that magnetic activity in stellar sunspot regions can accelerate electrons to extremely high energies, which then produce unique radio emissions as they spiral in the magnetic field [1] - This breakthrough allows for direct analysis of the small-scale magnetic field structure on stellar surfaces, enhancing the understanding of complex stellar magnetic fields [1] Group 2: Technological Advancements - The success of this research is attributed to the high sensitivity and resolution of the FAST telescope, which has improved the time resolution of stellar radio observations to the sub-millisecond level, capturing minute variations in stellar radio emissions [1] - Currently, there are very few devices worldwide that can match the capabilities of FAST in this regard [1]