“中国天眼”，捕获新的毫秒级射电暴

Core Insights - The research team from Peking University's School of Earth and Space Sciences has detected a new type of millisecond radio burst originating from the magnetic field of stellar sunspot regions using the "Chinese Sky Eye" (FAST) [1][3] - This discovery fills a gap in understanding the small-scale magnetic fields of stars outside the solar system and is significant for advancing research on space weather beyond the solar system [1][3] Group 1 - The solar magnetic field drives solar activity, which typically originates from localized strong magnetic field regions such as sunspots [3] - Similar magnetic activity phenomena exist on other late-type stars, with some stars (like active M-type stars) exhibiting more intense and frequent magnetic activities, significantly affecting the habitability of nearby planets [3] - Measuring small-scale magnetic fields of stars is crucial for exploring the origins of stellar magnetic activity and assessing potential space weather effects [3] Group 2 - Traditional methods for measuring stellar magnetic fields, such as Zeeman Doppler imaging, primarily provide information on the global large-scale magnetic fields of stars, lacking the ability to discern small-scale magnetic structures in sunspot regions [3] - The high sensitivity radio observations from the "Chinese Sky Eye" offer a new complementary approach to optical methods for detecting and studying sunspots [3] - The research team is also utilizing FAST observations to explore young solar-type stars, brown dwarfs, and stellar-planet interaction processes, which will further enhance understanding of stellar magnetic activities and their driven exoplanetary space weather phenomena [3]