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maa105
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say you fell beyond the event horizon of a black hole can another black hole passing close enough pull you out?
maa105 said:I understand that fact, but I am interested if say it wasnt a head on collision where the other black hole passes by close enough where its gravitational pull pulls you out of the other black hole's grip and not pull you into it's own. is that scenario possible?
yesAlgr said:Does this mean that if two event horizons intersected, it would be impossible to prevent the black holes from merging?
No. Why would they repel?It seems to me that two event horizons would repel each other. You can't escape the horizon, but could the horizon be pushed past you, thus releasing you?
Algr said:Does this mean that if two event horizons intersected, it would be impossible to prevent the black holes from merging?
Algr said:could the horizon be pushed past you, thus releasing you?
phinds said:the EH of a black hole is not a physical thing, it's just a DISTANCE.
PeterDonis said:Actually, the best way to think of the geometric relationship between the EH and the singularity is not as a distance, but as a time--the singularity is a certain amount of time to the future of the EH.
Algr said:Event horizons would repel each other because they would tip an object's light cone in opposite directions, thus canceling out the effect of their gravity. It's rather like how you would be weightless at the center of the Earth.
Algr said:A straight light cone does not necessarily mean that you are outside the (apparent) event horizon.
Algr said:There would be a zone that is "outside" the absolute horizon - but surrounded by it in every direction.
Algr said:Of course this depends on the two black holes NOT being within each other's absolute horizons
Algr said:There would be a zone that is "outside" the absolute horizon - but surrounded by it in every direction, and thus inside the apparent horizon. Is that right?
PeterDonis said:The event horizons *define* the boundary of a black hole;
Algr said:I've been using "Black Hole" as synonymous with "Singularity".
Algr said:I seem to recall that if you enter the event horizon of a large quiet black hole, you won't notice anything unusual in your vicinity. Distant stars would look strange, but your ship would seem normal until you (inevitably) got close enough to the singularity for spaghettification to occur.
Algr said:So in those terms, I am describing a stable area within the black hole where regular mater and information could exist.
Algr said:In this one dimensional diagram
Algr said:Have I explained why I think that event horizons would repel each other?
ChrisVer said:If some part of the event horizon of 1 enters 2
ChrisVer said:the resulting thing will have to be a single black hole with two singularities
Anoop Koushik said:I think that there could be one scenario where the black hole B's gravitational pull will cancel black hole A's gravitation, thus giving you small open gateway to escape from black holes up to an extent !
Algr said:No matter how much mass you add to the black holes, their event horizons can never reach the probe because each black hole is canceling out the effect of the other.
Algr said:Being in both gravitational fields is the same as being in neither of them.
Algr said:Your text with the "pair of trousers" describes the two event horizons merging, but does not explain why they would behave that way.
Algr said:Suppose the black holes has a mass such that in the absence of other objects, their event horizons would be one million miles radius. The two radii are one foot apart at their closest points.
Algr said:Is there really a gravitational equation that would show gravity as inescapable at a million miles away, but zero six inches further?
Algr said:Could you go over your "Apparent" and "Actual" horizons again? I think that one of these is the horizon that I am talking about, but I don't follow why there is a different one.
Algr said:The horizons DON'T merge because the region of null gravity between two black holes always lies outside the event horizon.
Chronos said:the region of null gravity between two black holes always lies outside the event horizon of both black holes.
No, it is not possible for another blackhole to pull you out of the event horizon of a blackhole. The event horizon is the point of no return for anything that enters a blackhole, including light. The gravitational pull of a blackhole is incredibly strong, and even if another blackhole were nearby, it would not be able to overcome the pull of the first blackhole.
As of now, there is no known way to escape the event horizon of a blackhole. The extreme gravitational pull of a blackhole makes it nearly impossible for anything, including light, to escape once it has passed the event horizon. However, some theories suggest that it may be possible to escape through a wormhole or by traveling faster than the speed of light, but these are still hypothetical and have not been proven.
Yes, the event horizon of a blackhole can expand or shrink depending on the mass of the blackhole. The more massive a blackhole is, the larger its event horizon will be. Similarly, if a blackhole loses mass, its event horizon will shrink. This is because the event horizon is directly related to the gravitational pull of a blackhole, which is determined by its mass.
If you were to cross the event horizon of a blackhole, you would not be able to escape. The gravitational pull at this point is so strong that it would stretch and compress your body until you are torn apart. This process is known as "spaghettification." Additionally, time and space are distorted near the event horizon, so you would experience extreme time dilation, making it seem like time is slowing down or even standing still.
No, the event horizon of a blackhole cannot be seen because it is the point at which the escape velocity exceeds the speed of light. This means that even light cannot escape, making the event horizon invisible. However, the boundary of the event horizon, known as the "photon sphere," can be seen as a bright ring of light surrounding the blackhole.