"China's Giant Telescope Unveils Secrets of Black Hole's Relativistic Jets"

China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST) has detected sub-second low-frequency radio quasiperiodic oscillations in a black-hole X-ray binary, providing insights into the dynamic features of relativistic jets. The observations, made from 2020 to 2022, revealed transient periodic oscillations and directly linked them to relativistic jets. This marks the first time such oscillations have been observed in a microquasar, opening up new avenues for radio observation and theoretical research of black holes. Additionally, five intelligent robot systems have been approved for maintenance of FAST, increasing its observation duration and efficiency.