News summary produced by Claude AI
An international research team led by the Université de Montréal has published findings from the James Webb Space Telescope that offer unprecedented detail on the mechanisms by which supermassive black holes accumulate the gas necessary for growth. The research, which included contributions from Michigan State University, was published in The Astrophysical Journal Letters on July 14.
Supermassive black holes reside at the centers of nearly all large galaxies and can exceed the mass of the sun by millions or billions of times. While black holes themselves emit no light, infalling gas and dust generate extreme heat and brightness in a region termed an active galactic nucleus. The resulting black hole can function as a cosmic engine, producing powerful jets that distribute energy throughout the galaxy, influencing star formation and galactic evolution across billions of years.
Astronomers have long puzzled over an apparent contradiction: the jets from active black holes heat surrounding gas, which should make it more difficult for that gas to cool and fall inward toward the black hole. Theory suggests the black hole should eventually exhaust its fuel supply. However, many supermassive black holes continue to feed, indicating the system maintains some form of self-regulation.
The research team studied NGC 4696, the primary galaxy in the Centaurus Cluster located approximately 145 million light-years from Earth. Using the James Webb Space Telescope’s NIRSpec instrument over nearly eight hours of observation, scientists mapped gas motion within the black hole’s gravitational sphere of influence at a resolution of roughly 30 light-years. The data revealed an S-shaped structure that is actually a rotating disk of gas surrounding the supermassive black hole, measuring nearly 800 light-years across with material moving at speeds up to 600 kilometers per second.
Most significantly, the observations demonstrated that this rotating disk connects physically to a large inward-flowing gas filament, with gas visibly traveling along the filament and entering the disk that supplies material to the black hole. This connection provides strong observational evidence that cool gas filaments function as feeding channels for supermassive black holes. Computer simulations conducted by the research team reproduced the observed behavior, further supporting the hypothesis that a self-regulating cycle operates: jets inject energy into surrounding gas, portions cool and form filaments, magnetic forces guide this material toward the center where it collects in the spinning disk, fueling the black hole and powering new jets that heat surrounding gas anew.