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“怀柔一号”发现磁陀星驱动伽马暴直接证据
Ke Ji Ri Bao· 2025-09-21 01:22
Core Insights - A collaborative team from Nanjing University, the Institute of High Energy Physics of the Chinese Academy of Sciences, and the University of Hong Kong has provided direct evidence of magnetar-driven gamma-ray bursts (GRBs) using high-precision observational data from the "Huairou-1" satellite [1][2] - This breakthrough marks the first observation of a stable millisecond pulsation signal in a gamma-ray burst, offering crucial evidence for understanding the nature of compact object mergers [2] Group 1 - The gamma-ray burst GRB 230307A, which is the second brightest in human observation history, was observed with unprecedented precision due to the innovative design of the "Huairou-1" satellite [1] - The research team identified a quasi-periodic oscillation signal with a central frequency of 909 Hz, lasting only 160 milliseconds, which aligns with the expected millisecond rotation period of a magnetar [1] Group 2 - Future research will involve utilizing data from multiple satellites, including "Jiguang," "Huiyan," "Tianguan," and SVOM, to search for similar quasi-periodic oscillation signals in more gamma-ray bursts [2] - The team aims to combine observational data with theoretical and numerical simulations to gain a comprehensive understanding of the physical mechanisms behind magnetar-driven gamma-ray bursts [2]