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Black holes keep 'burping up' stars they destroyed years earlier, and astronomers don't know why
(www.livescience.com)
this post was submitted on 04 Sep 2023
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I am probably looking to deep into this but a recent kurtzgesagt claimed that once you get to the event horizon time and space switch into eachother. Your no getting sucked into the center. But your falling into the future.
Sm coming back out years later doesn’t sound like a contradiction to that,
According to the discoverer, this has nothing to do with the event horizon.
When something gets sucked into a blackhole it needs to pas the event horizon.
The first sentence of the body text in the article:
“Up to half of the black holes that devour stars "burp up" their stellar remains years later.”
I recognize that its not an entire sun being sucked in at once and that the black holes presence alone destroys the sun but the parts that are left. Radiation and what not should still be attracted to the black hole and assumingly orbit around its gravity before gething devoured.
It cant burp something out that was never inside. Or maybe it does but those implications are even more bizar. If it was just “burping out” the surrounding star stuff it wouldn’t be called a burp but “pushed it away again.
How else am i to interpret this?
Maybe don't read too much into the word choice of a non-technical article, and trust the actual astronomer discoverer talking about it?
The top comment stating who discovered it was there yet when i made my initial comment where i was upfront that i may be looking to deep with my limited knowledge.
While i recognize that the discussion here has evolved with more nuance and smarter opinions you cant blame me for sticking with the original conversation which is the posted article. After all i am just respond to the replies i get i am not going to re-read the entire thread every time.
I also recognize that the first person to reply did say “According to the discoverer, this has nothing to do with the event horizon.”
But there was no source and i just read it as the “horizon has nothing to do with the burp” that doesn’t mean the twisted physics inside it do not.
You're correct, but so is the person above. These stars are not (entirely) crossing the event horizon. Lots of material is left orbiting around the edge forming a disc. It's this disc, the formation of it, and the ejection of material from it, that's relevant here.
There's almost nothing more contradictory to that. While within a black hole, time becomes space-like, with your future being the inevitable center. The only possible way to escape would be to go back in time.
Well that's assuming einsteinian physics, black holes are one of the few cases our physics stops making much sense.
I guess the future being at the center is what makes it confusing to me.
In my head disappearing while being pulled towards their future and then someMaterial being burped out in the future sound like some parts arrived at a destination.
I would assume the material being burped out has been inside while l pulled towards the future till it no longer was.