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clusterlizard99 t1_iu9ubqn wrote

A black hole itself cannot be seen as it absorbs everything including light, but hypothesis says that black holes do emit some radiation, which we can photograph in the appropriate spectrum.

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mytrickytrick t1_iu9v1v5 wrote

Based on [0], it seems that the radiation is from outside the event horizon, not the black hole itself:

"Hawking radiation is black body radiation that is theorized to be released outside a black hole's event horizon because of relativistic quantum effects. "

https://en.m.wikipedia.org/wiki/Hawking_radiation

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clusterlizard99 t1_iu9vf6r wrote

It actually IS from the black hole. If you read on in that text:

>Hawking radiation reduces the mass and rotational energy of black holes and is therefore also theorized to cause black hole evaporation. Because of this, black holes that do not gain mass through other means are expected to shrink and ultimately vanish.

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mytrickytrick t1_iu9w2tr wrote

Ok, that was uncalled for. Are you expecting for me to read the whole article before I blast off a reply to you? Thanks for the info.

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ExtonGuy t1_iua8rg1 wrote

No, we can’t photograph the Hawking radiation. It’s much (much!) to weak. What we can see is the accretion ring around the BH, which is very hot and glowing.

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