How can two Black holes fusion and consist a supermassive Black Hole

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Discussion Overview

The discussion centers on the process by which two black holes can merge to form a supermassive black hole, exploring the nature of this merger, the concept of spacetime curvature, and the characteristics of different types of black holes involved in such events.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants clarify that the term "fusion" may be misleading, suggesting that black holes merge rather than fuse, with the resulting mass potentially being supermassive depending on the original sizes of the black holes.
  • There is a question about whether the curvatures of spacetime can unite during the merger of black holes.
  • One participant describes the merging process as akin to two point masses coming together, with the event horizon appearing as two spheres merging into a larger one.
  • Another participant notes that black hole singularities can collide under specific conditions, such as both being Schwarzschild or Reissner black holes and colliding along a straight line, but raises questions about the merging of Kerr or Newman black holes and the evolution of their singularities.
  • A participant expresses confusion regarding the terms "Schwarzschild," "Reissner," "Kerr," and "Newman" black holes, indicating a need for further clarification on these concepts.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the terminology and mechanics of black hole mergers, with multiple viewpoints and questions remaining unresolved.

Contextual Notes

Some participants express uncertainty about specific black hole types and their properties, indicating a potential gap in understanding that may affect the discussion.

Astro-Anouar
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How can two Black holes fusion and consist a supermassive Black Hole ?!
 
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Astro-Anouar said:
How can two Black holes fusion and consist a supermassive Black Hole ?!

I'm not sure what you mean by "fusion". If two black holes come together, they merge to form a single black hole. There is no fusion involved. Whether or not it is super massive would depend on their original sizes but probably one of them would have to already be super massive.
 
I'm asking if the black holes can United , Can the Curvatures of spacetime United and how ?
 
Astro-Anouar said:
I'm asking if the black holes can United , Can the Curvatures of spacetime United and how ?

What part of post #2 did you not understand?
 
The OP is probably wondering about the details like when a sun comes to close to a black hole and there's a stream of material from the sun being sucked into the black hole.

For two black holes neither will give up material and so they'll act like two point masses coming together. The event horizon will look like two spheres merging into one larger one if you could even see it.
 
jedishrfu said:
The OP is probably wondering about the details like when a sun comes to close to a black hole and there's a stream of material from the sun being sucked into the black hole.

For two black holes neither will give up material and so they'll act like two point masses coming together. The event horizon will look like two spheres merging into one larger one if you could even see it.

Thanks :smile:
 
Black hole singularities can simply collide only if both are Schwarzschild or Reissner black holes, AND they are colliding along straight line between the point masses. Then the result is also a Schwarzschild or Reissner black hole.

But what happens when two Kerr or Newman black holes merge? How do the two separate ring singularities evolve into one ring singularity?
 
snorkack said:
Black hole singularities can simply collide only if both are Schwarzschild or Reissner black holes, AND they are colliding along straight line between the point masses. Then the result is also a Schwarzschild or Reissner black hole.

But what happens when two Kerr or Newman black holes merge? How do the two separate ring singularities evolve into one ring singularity?

Thank you for information But i didn't understand 'Schwarzschild or Reissner black hole ' and 'Kerr or Newman black holes'
 

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