James Webb Telescope reveals how black holes feed themselves

The James Webb Space Telescope has revealed a key mechanism that explains how supermassive black holes sustain themselves, solving a long-standing mystery about their fuel supply. By observing a galaxy 145 million light-years away, astronomers watched a stream of cool gas feeding a black hole, showing that these cosmic giants can regulate their own consumption.

The observations focused on NGC 4696, a galaxy where the supermassive black hole at its center was seen drawing in a river of cool gas. This gas formed an 800-light-year-wide disk that spins at 600 kilometers per second, providing a steady flow of material. The discovery affects our understanding of how black holes grow and influence their host galaxies over cosmic time.

This matters because black holes were thought to eventually run out of nearby gas, but they continue to shine for billions of years. The new data show that black holes can recycle hot gas from their surroundings, cooling it into a usable form. The James Webb Space Telescope spent nearly eight hours staring at NGC 4696 to capture this process in action.

The findings come from a study published by researchers using the telescope's infrared capabilities. The galaxy NGC 4696 is located 145 million light-years away in the Centaurus cluster. The gas disk observed is 800 light-years across and rotates at 600 kilometers per second, feeding the supermassive black hole.

Earlier observations had suggested that black holes might regulate their own feeding through feedback loops, but direct evidence was lacking. The James Webb Space Telescope, launched in December 2021, was designed to see through dust and gas to study such phenomena. This discovery builds on previous work showing that black holes can influence the temperature of gas in their vicinity.

Next steps involve studying other galaxies to see if this feeding mechanism is common. The researchers plan to use the telescope to observe more black holes in different environments, which could reveal how these processes shaped the early universe. The findings also help explain how black holes and galaxies co-evolve, with implications for models of galaxy formation.