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Originally Posted by NY65912
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I had to find another source to flush out some of the meaning in that article including the caption.
Event Horizon and Accretion Disk
https://www.physicsoftheuniverse.com/topics_blackholes_event.html
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Material, such as gas, dust and other stellar debris that has come close to a black hole but not quite fallen into it, forms a flattened band of spinning matter around the event horizon called the accretion disk (or disc). Although no-one has ever actually seen a black hole or even its event horizon, this accretion disk can be seen, because the spinning particles are accelerated to tremendous speeds by the huge gravity of the black hole, releasing heat and powerful x-rays and gamma rays out into the universe as they smash into each other.
These accretion disks are also known as quasars (quasi-stellar radio sources).
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It looks pretty much like they thought it would.
I'm still a bit puzzled by the use of the word "shadow" though.
https://www.sciencenews.org/article/black-hole-first-picture-event-horizon-telescope
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INTO THE ABYSS The first image of a black hole shows a bright ring with a dark, central spot. That ring is a bright disk of gas orbiting the supermassive behemoth in the galaxy M87, and the spot is the black hole’s shadow.
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So they think this angle is the backside of the black hole and not the front side?
Is there a front and a back, or is it Omnidirectionall?