2025-12-11 中国科学院（CAS）
Artist’s impression of disk-jet co-precession in a black hole system. (Image by XU Zhang)
＜関連情報＞
- https://english.cas.cn/newsroom/research_news/phys/202512/t20251212_1136062.shtml
- https://www.science.org/doi/10.1126/sciadv.ady9068
潮汐破壊イベントにおけるディスクジェット共歳差の検出 Detection of disk-jet coprecession in a tidal disruption event
Yanan Wang, Zikun Lin, Linhui Wu, Wei-Hua Lei, […] , and Ting-Wan Chen
Science Advances Published:10 Dec 2025
DOI:https://doi.org/10.1126/sciadv.ady9068
Abstract
Theories and simulations predict that intense space-time curvature near black holes bends the trajectories of light and matter, driving disk and jet precession under relativistic torques. However, direct observational evidence of disk-jet coprecession remains elusive. Here, we report the most compelling case to date: a tidal disruption event (TDE) exhibiting unprecedented 19.6-day quasi-periodic variations in both x-rays and radio, with x-ray amplitudes exceeding an order of magnitude. The nearly synchronized x-ray and radio variations suggest a shared mechanism regulating the emission regions. We demonstrate that a disk-jet Lense-Thirring precession model successfully reproduces these variations while requiring a low-spin black hole. This study uncovers previously uncharted short-term radio variability in TDEs, highlights the transformative potential of high-cadence radio monitoring, and offers profound insights into disk-jet physics.
