To collect all info at the event horizon

[Chiron69]

TL;DR

Event horizon,collecting ALL the fotons inside possible?

Hi there!

I have a question for anyone;
If we could have built a shielded spaceship that can withstand all the radiation etc from a supermassive black hole. And we managed to park at the event horizon.
And we want to collect all the visual data that's there in laters, how could we get all the info out, please?

Best wishes from
Ronny,
No(r) way.

 

[PAllen]

You can’t park at the event horizon. Even with infinite thrust, you can’t hover there. Further, no signal of any kind can escape it. Your question is like “if I really want to divide by zero and get a finite answer, how would I do it”.

 

[Ibix]

As PAllen says, you can't. There's no way even in theory to describe someone hovering at the event horizon - any attempt to do so involves contradicting yourself somewhere.

One additional point - there is (almost) no radiation from a black hole. The matter that hasn't yet fallen in and is swirling around outside (called the accretion disc), on the other hand, is so hot that you'd be bathed in hard radiation from that. You may have read of Hawking radiation, which is believed to be emitted from black holes and is the reason for my parenthetical "almost" above. This is undetectably tiny for any non-microscopic black hole - you actually receive more radiation from the cosmic microwave background.

 

[Chiron69]

I thought that if was implied that this is a theoretical question, and not a practical.
OFLf course the gravity would destroy us, but would it be theoretically possible to extract all the information stored inside? Yeeezzz
:-)

 

[Ibix]

Did you read the answers you got? It isn't possible to do, even in theory.

It is perfectly possible to imagine an isolated black hole with no accretion disc and hence no radiation threat. And you can imagine a rocket capable of arbitrarily large thrust. It is still impossible to hover at the event horizon, because "hovering at the event horizon" is a contradiction in terms.

 

[Chiron69]

And please don't be so aggressive towards new forum users. You mostly look like you're in a reality show/competition on TV to vote someone ou, and more focused on how do make ppl look the dumbest. With exceptions, thankfully! ;-)

 

[Ibix]

I said, in one of only two responses you received (bolding added):

There's no way even in theory to describe someone hovering at the event horizon

To which you replied (bolding added):

I thought that if was implied that this is a theoretical question

...with a "hmm" emoji and a "yeeezzz" for emphasis of your dismissal of the responses. Then you repeated the same question we'd just pointed out was self-contradictory and could not be answered on any basis. I think a fairly blunt response was warranted.

If you want to go into the details of why your question can't be answered, we can do that. If you want to discuss related experiments that could be performed in principle near black holes, again we could do that. But there is nothing more to say about your original question: it is based on self-contradiction and cannot be answered.

 

[Orodruin]

And please don't be so aggressive towards new forum users. You mostly look like you're in a reality show/competition on TV to vote someone ou, and more focused on how do make ppl look the dumbest. With exceptions, thankfully! ;-)

Nobody was aggressive in the slightest, at least not until you started making derogatory and dismissive remarks about the answers you had received. The answers clearly and factually pointed out that your question was in contradiction with the theory itself and therefore could not be answered even "in theory". It is not a question of practicality, it is a matter of your setup violating the theory in itself.

 

[PeterDonis]

we managed to park at the event horizon.

You can't. It's impossible, even in principle, for an observer to remain stationary at the event horizon.

thought that if was implied that this is a theoretical question

A theoretical question cannot be answered if it is based on a premise that violates the theory.

please don't be so aggressive towards new forum users. You mostly look like you're in a reality show/competition on TV to vote someone ou, and more focused on how do make ppl look the dumbest

Nobody was being aggressive. We are simply telling you that your question is unanswerable.

Thread closed.