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Shredded stars reveal how black holes ignite trillion-sun flares

How black holes light up the dark

Supermassive black holes are among the most enigmatic objects in the universe. They typically weigh millions or even billions of times the mass of the sun and sit at the centers of most large galaxies. At the heart of the Milky Way lies Sagittarius A*, our galaxy’s supermassive blackhole, with a mass of about four million suns. But these black holes do not emit light, so astronomers can only detect them indirectly through their effects on nearby stars and gas. Artist’s depiction of a supermassive black hole tearing apart a star, with roughly half of the stellar debris flung back into space while the remainder forms a glowing accretion disk around the black hole. Credit: DESY, Science Communication Lab

In a study published in The Astrophysical Journal Letters, Eric Coughlin, assista...

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