What happens when an anitmatter blackhole collides with a matter blackhole?

In summary, according to this article, information about the matter that falls into a black hole is lost.
  • #1
Herbascious J
155
5
What happens if two black holes of identical mass collide, but one is anti-matter and the other is regular matter? Would all of the matter anihilate in a gigantic explosion of photons which could be detected by a far away observer? Or, would all of the radiation energy, which would still have an enormous gravitational field equal to the combined energy of the two original black holes, remain trapped within the event-horizon of the now, merged, single black hole? This would be like a black hole made of nothing but photon energy (which I am assuming still warps space-time).
 
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  • #2
The two black holes would merge.
 
  • #3
In classical GR, according to the No-Hair Theorem, black holes are completely characterised by charge, mass, and angular momentum. Thus an antimatter star with the same amount of charge, same mass and same angular momentum with a matter star will, under ideal conditions, collapse into identical black hole. Therefore you don't have antimatter black hole. When colliding, these two black holes will thus, just merge.
 
  • #4
I would add that aside from mass, electric charge, and angular momentum, all information about the matter that falls into a black hole is lost.
So, it is meaningless to say that a black hole is either made either matter or antimatter.
There is no difference.

EDIT: I was beaten to the punch by yenchin.
 
  • #5
Interesting. So basically, it's the energy(or mass) that matters and that's all. Any Anti-matter anihilations would be hidden (if not out-right irrelevant). Thanks all.
 
  • #6
well if it doesn't matter what kind of matter and energy go into a black hole what about hawking radiation where an anti matter particle will make the bh smaller
 
  • #7
gendou2 said:
...all information about the matter that falls into a black hole is lost..

No one knows if information is really lost when matter falls into a black hole. See http://en.wikipedia.org/wiki/Black_hole_information_paradox" [Broken]," by Susskind.
 
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1. What is an antimatter black hole?

An antimatter black hole is a theoretical concept where the singularity at the center of a black hole is composed of antimatter particles instead of regular matter particles. This would result in an opposite gravitational effect, where instead of pulling matter towards it, it would repel it.

2. What is a matter black hole?

A matter black hole is a region in space where the gravitational pull is so strong that nothing, including light, can escape from it. It is formed when a massive star dies and its core collapses under its own gravity, becoming infinitely dense.

3. What happens when an antimatter black hole collides with a matter black hole?

When the two black holes collide, their mass and energy combine, causing a massive explosion. The energy released can be detected in the form of gravitational waves and electromagnetic radiation.

4. Is it possible for an antimatter black hole and a matter black hole to collide in the real world?

No, it is not currently possible for these two types of black holes to collide in the real world. Antimatter is extremely rare in the universe and it is unlikely that an antimatter black hole would form. Additionally, black holes are typically isolated objects and collisions between them are rare.

5. What are the potential consequences of a collision between an antimatter black hole and a matter black hole?

The consequences of such a collision are still largely unknown as it is a hypothetical scenario. However, theories suggest that it could result in the formation of a new, larger black hole with properties that are a combination of the two original black holes. It could also release a tremendous amount of energy and radiation that could have significant effects on the surrounding area.

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