Tue Jan 28 05:07:57 UTC 2025: ## Supermassive Black Holes Found to Fuel Themselves in Self-Sustaining Cycle
**Santiago, Chile/Huntsville, Alabama** – Astronomers have uncovered a remarkable self-feeding mechanism employed by the universe’s most massive black holes. A new study published in *Nature Astronomy* reveals that these behemoths, residing at the centers of galaxy clusters, fuel their growth by cooling the surrounding gas through powerful outbursts.
Using data from NASA’s Chandra X-ray Observatory and the European Southern Observatory’s Very Large Telescope (VLT) in Chile, researchers led by Valeria Olivares of the University of Santiago de Chile examined seven galaxy clusters. These clusters contain black holes millions to billions of times the mass of our Sun.
The study demonstrates that the black holes’ powerful jets cool the surrounding hot gas, forming long, thin filaments of cooler gas. Turbulence within the gas facilitates this cooling, and a portion of this cooler gas then flows back into the black hole, triggering further outbursts and perpetuating the cycle. This self-sustaining process was confirmed by a strong correlation between the brightness of the hot and cool gas: brighter hot gas corresponds to brighter cool gas.
Stunning images from the Perseus and Centaurus galaxy clusters vividly illustrate this phenomenon. Perseus shows bright pink filaments contrasting against a bluish-purple hot gas background, while Centaurus displays a more diffuse appearance with delicate, feathery filaments.
The research team, comprising international experts from Chile, the US, Australia, Canada, and Italy, also found unexpected similarities between the gas filaments in these clusters and the tails of “jellyfish galaxies,” suggesting a common underlying process across vastly different cosmic scales. The study utilized advanced instruments, including the VLT’s MUSE instrument for 3D visualizations and Chandra’s X-ray data for crucial insights into the hot gas dynamics. This discovery offers a significant advance in our understanding of the growth and evolution of supermassive black holes.
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