It looks more likean bathtub-drain swirl from the accretion disc than an emission from inside the event horizon
"two NASA satellite telescopes, including the Nuclear Spectroscopic Telescope Array (NuSTAR), witnessed a black hole's corona being "launched" away from a supermassive black hole. Then a huge burst of X-ray energy emitted."
https://blog.physics-astronomy.com/2022/11/nasa-just-saw-something-come-out-of.html?m=1
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