Dust ring allows black holes to stay quiet while they eat, says NASA

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Dust ring allows black holes to stay quiet while they eat, says NASA
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The study focused on the black hole at the center of Andromeda and some computer simulations were run to dig deep into its eating behavior.

Not all black holes eat the same way, and it is their eating behavior that decides how much they will shine.Just like humans, black holes also differ in their eating habits. While many black holes try to engulf everything at once, leading to big cosmic explosions and intense electromagnetic emissions, others prefer to consume matter slowly and quietly.

“This is because they are consuming a small but steady flow of food, rather than large clumps. The streams approach the black hole little by little, and in a spiral, similar to the way water swirls down a drain,” according to a The 2023 study also suggested that the dust ring around Andromeda’s black hole can only function as a viable food source if it is neither too large nor too small.

However, there was no way to confirm whether the black hole had a dust ring of the required size. This was a big limitation, and this is where data from the Spitzer telescope played an important role.

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