Two black holes colliding - visual

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SUMMARY

This discussion centers on the visual phenomena associated with the collision of two non-rotating black holes, specifically under the framework of General Relativity (GR). Participants explore the implications of gravitational effects on light and the merging of event horizons. It is established that as two black holes approach each other, their horizons will merge, but an external observer will not see them cross the event horizon due to the nature of light escaping from black holes. Instead, objects near the event horizon will appear to fade from view as the horizon expands.

PREREQUISITES
  • Understanding of General Relativity (GR)
  • Familiarity with black hole physics, specifically event horizons
  • Knowledge of Schwarzschild coordinates and geodesics
  • Basic concepts of light distortion and redshift in astrophysics
NEXT STEPS
  • Research the Schwarzschild solution and its implications for black hole dynamics
  • Explore simulations of black hole mergers and their visual representations
  • Study the effects of gravitational lensing and light distortion near black holes
  • Investigate observational techniques for detecting black hole mergers, such as gravitational wave astronomy
USEFUL FOR

Astronomers, astrophysicists, and students of physics interested in black hole dynamics, gravitational effects, and observational techniques related to black hole mergers.

  • #31
rootone said:
Although if you did fall in, your career as solipsist is guaranteed to end in the near future.
Yes of course, because as they say, "publish or perish", and that darned E.H. makes publishing impossible. Therefore, there's only one outcome possible.
 
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  • #32
As a layman, I would think the two holes would resist each other. Assuming the are pulling with equal force gravity, I think they would remain in a stale-mate situation until they drifted by each other. If one was stronger, it would simply devour the weaker one.
 
  • #33
Sue Rich said:
As a layman, I would think the two holes would resist each other. Assuming the are pulling with equal force gravity, I think they would remain in a stale-mate situation until they drifted by each other. If one was stronger, it would simply devour the weaker one.
Your 'stalemate' situation is in practice that they end up for a long time in a mutual orbit. just as as the case with normal binary star systems.
Eventually (a long time), some of the angular momentum in the system can be lost for a variety of reasons, so the orbiting gets closer and faster.
There comes a point where the event horizons would be overlapping, but since that can't actually happen they then merge into one bigger black hole.
 
  • #34
Sue Rich said:
I would think the two holes would resist each other.

I'm not sure why you would think this. Black holes have attractive gravity, just like other gravitating objects. They do not repel each other.
 

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