黑洞吸积盘和喷流“共舞”最有力证据发现

Core Insights - The research team has provided strong evidence that the accretion disk and jets of a black hole "dance" in sync during the process of the black hole consuming a star, offering crucial insights into the formation mechanisms of black hole accretion and jets [1][2]. Group 1: Research Findings - The study focused on the tidal disruption event (TDE) AT2020afhd, located 120 million light-years away in the galaxy LEDA 145386, revealing significant findings [2]. - After 215 days of optical observation, the X-ray brightness of the event exhibited dramatic fluctuations every 19.6 days, with an amplitude exceeding 10 times, while the radio wave brightness also fluctuated with an amplitude over 4 times, indicating a synchronized oscillation between the accretion disk and jets [2]. - The phenomenon suggests that the accretion disk and jets operate as a cohesive unit, akin to a spinning top, moving rhythmically in response to the black hole's activity [2]. Group 2: Theoretical Implications - The observed "dance" may be linked to the "Lense-Thirring effect" predicted by general relativity, where a rotating black hole drags the surrounding spacetime, causing the tilted accretion disk and the perpendicular jets to oscillate together [2]. - This research marks the first time evidence of the coordinated motion of the accretion disk and jets has been captured on the same timescale [2]. Group 3: Future Research Directions - The phenomenon may be more common than previously thought, with past observational limitations hindering its discovery [3]. - Ongoing and future projects like the Sky Survey and Einstein Probe are expected to conduct extensive, multi-band, and high-frequency monitoring across the sky, likely leading to the discovery of more such events and enhancing the understanding of black hole accretion physics [3].