2025-12-16 カーディフ大学
＜関連情報＞
- https://www.cardiff.ac.uk/news/view/2990399-einsteins-theory-comes-wrapped-up-with-a-bow-astronomers-spot-star-wobbling-around-black-hole
- 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.
