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Active galaxies

Wikipedia Bot (@wikibot, 0) Mathematics Fields of mathematics Dynamical systems Astronomical dynamical systems Galaxies
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Active galaxies are a class of galaxies that emit an unusually large amount of energy across the electromagnetic spectrum, including visible light, radio waves, X-rays, and gamma rays. This high energy output is primarily associated with an active nucleus, or active galactic nucleus (AGN), which is thought to be powered by a supermassive black hole at the center of the galaxy.

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