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Supermassive Black Holes refer to black holes with a mass millions to billions of times that of the sun. They are believed to reside at the centers of galaxies, including our own Milky Way, and play a crucial role in galaxy formation and evolution. In the context of stellar astrophysics, supermassive black holes represent the end stage of the most massive stars and provide a unique laboratory for studying the extreme conditions near the event horizon. These objects are the most massive and most dense concentration of matter known and have fascinated astronomers for decades due to their mysterious nature and immense gravitational pull.