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Recently, relying on the National Astronomical Observatory of the Chinese Academy of Sciences and independently developed by China to independently develop the national major scientific and technological infrastructure "China Heavenly Eye" 500-meter aperture spherical radio telescope (FAST), a researcher led by the Department of Astronomy of the School of Physics of Peking University and the Institute of Astronomy and Astrophysics of Keweili, Li Kejia, a researcher of the National Astronomical Observatory of the Chinese Academy of Sciences, Zhu Weiwei, a researcher of the National Astronomical Observatory of the Chinese Academy of Sciences, and a researcher of the East Subo of the Institute of Astronomy and Astrophysics of Peking University.
Fast radio bursts (FRBs) are occasional radio bursts in the universe
.
The FAST Priority and Major Scientific Research team used FAST to conduct long-term monitoring of FRB 20201124A, and detected 1863 burst pulse signals from this fast radio burst in 82-hour observations over 54 days, making it one of
the most active repeat bursts.
FAST's detection of nearly 2,000 outbreaks of the repetitive fast radio burst FRB 20201124A revealed a very complex, dynamically evolving, strong magnetic field environment of the burst, which is of great help
in understanding how the fast radio burst and its surrounding environment produce a radio burst and affect its propagation.
Xu Heng, a doctoral student jointly trained by Peking University and the National Astronomical Observatory of the Chinese Academy of Sciences, Chen Ping, a doctoral student of Peking University, and Jiarui Niu, a doctoral student of the National Astronomical Observatory of the Chinese Academy of Sciences, were deeply involved in this research
.
Figure 1: Short-scale evolution of Faraday's
amount of rotation.
Figure 2: Oscillation of line/circle polarity and polarization position angle detected in FRB 20201124A
Figure 3: Spectral and high-resolution imaging observations of the host galaxy at FRB 20201124A via the Keck telescope
