Interaction of 2 black holes

In summary, the question is about the possible consequences of two black holes with different masses encountering each other at a certain distance. While exact solutions are difficult to determine, numerical simulations have been developed. The force between the black holes may distort their event horizons, but they are not destroyed. Theoretically, it may be possible for black holes to slowly evaporate through Hawking radiation, but this process would take a very long time.
  • #1
Denton
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What would the concequence of 2 black holes moved to a certain distance appart with one being say double or triple the mass of the other. Would the force (or could the force) be strong enough to warp space back so that it 'destroys' the event horision therefore returning the black hole to regular matter or whatnot.

Can you reverse a black hole?
 
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  • #2
Denton said:
What would the concequence of 2 black holes moved to a certain distance appart with one being say double or triple the mass of the other.

To repeat something several of us have recently had occasion to say: using a spellchecker would be a good idea.

Is your question: what would happen if two black holes, one twice the mass of the other, encounter each other at a certain initial distance and relative velocity?

The short answer is that exact solutions modeling such an event are in general hard to come by, but numerical simulations have been developed into an art form; for an authoritative discussion of simulations of black hole formation see this eprint by Stuart Shapiro and for a discussion of black hole-neutron star binaries see this eprint by Shapiro et al.

Denton said:
Would the force (or could the force) be strong enough to warp space back so that it 'destroys' the event horision therefore returning the black hole to regular matter or whatnot.

Event horizons are not physical surfaces and this kind of question is tricky to discuss for other reasons as well. But the short answer is that while in a close encounter between black holes their horizons become distorted, they are certainly not destroyed.

Denton said:
Can you reverse a black hole?

Our gold standard theory of gravitation, gtr, is a relativistic classical field theory. In this theory, once a black hole is formed, it cannot be destroyed. However, Nature adores the quantum, so it is natural to try to incorporate ideas from quantum field theories into gtr. As yet, this cannot be done rigorously, but roughly speaking there are fairly well understood but limited approximations which lead to the idea of Hawking radiation, and to the suggestion that black holes might very very slowly evaporate. It is important to understand that a stellar mass black hole would take a very long to evaporate if this suggestion turns out to be correct!

So the best short answer to your question is probably: as far as we know, no, but over very long periods (much longer than the current age of the universe), possibly yes.
 
  • #3


The interaction of two black holes is a complex and fascinating topic in astrophysics. When two black holes come close to each other, they will start to orbit each other and eventually merge into a single, larger black hole. This process is known as a black hole merger.

The consequence of two black holes moving to a certain distance apart with one being double or triple the mass of the other would depend on the distance between them and their relative velocities. If they are far enough apart, they may continue to orbit each other without merging. However, if they are close enough, the more massive black hole will start to pull material from the smaller one, increasing its own mass and eventually merging with it.

The force between two black holes is incredibly strong, as they have a tremendous amount of mass concentrated in a small space. However, this force is not strong enough to reverse a black hole or "destroy" its event horizon. The event horizon is the point of no return, where the escape velocity is greater than the speed of light. This means that once an object crosses the event horizon, it cannot escape, not even light. The force between two black holes is not strong enough to overcome the immense gravity of the black hole and reverse this process.

It is currently not possible to reverse a black hole or turn it back into regular matter. Black holes are considered to be one of the most mysterious and powerful objects in the universe, and our understanding of them is still limited. While there are theories and speculations about the potential for reversing a black hole, it is not something that has been observed or proven to be possible at this time.
 

1. How do black holes interact with each other?

When two black holes are in close proximity, they will eventually begin to orbit around each other due to their immense gravitational pull. As they continue to orbit, they will eventually merge into one larger black hole.

2. What happens when two black holes merge?

When two black holes merge, they release a tremendous amount of energy in the form of gravitational waves. This energy is strong enough to distort the fabric of space-time and can be detected by specialized instruments on Earth.

3. Can black holes collide or bounce off of each other?

No, black holes do not have any physical surface for them to collide or bounce off of each other. Instead, they will continue to orbit each other until they merge.

4. Can the interaction of two black holes be observed?

Yes, the gravitational waves released by the merging of two black holes can be observed by specialized instruments such as the Laser Interferometer Gravitational-Wave Observatory (LIGO). These observations provide valuable information about the nature of black holes and their interactions.

5. What is the significance of studying the interaction of two black holes?

Studying the interaction of black holes allows us to better understand the laws of gravity and the behavior of objects in extreme conditions. These observations also provide evidence for the existence of black holes and help us to further our understanding of the universe.

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