Something Is Killing This Black Hole at Impossible Speed, And Nobody Knows What
Indian Defence Review • • science
Key Points:
- A galaxy 10 billion light-years away, J0218−0036, has dimmed to one-twentieth of its brightness over two decades, attributed to a supermassive black hole rapidly running out of fuel.
- This challenges the long-held belief that black hole accretion changes occur over tens of thousands of years, showing instead a drastic decline within a human-observable timescale.
- Researchers ruled out dust obscuration as the cause through multi-wavelength analysis, confirming the intrinsic luminosity drop from the black hole’s active galactic nucleus.
- The black hole’s Eddington ratio plummeted from 0.4 to 0.008, suggesting a fundamental change in accretion physics and an accretion rate decline much faster than current theoretical models predict.
- The discovery offers new insights into black hole evolution, revealing rapid accretion variability previously thought unobservable within a human lifetime.
