Coalescing Supermassive Black Holes

In summary, the conversation discusses the coalescence of two Supermassive black holes and raises questions about their merging process. It also includes a question about the creation of gravity and its interference patterns. The discussion suggests that the Schwarzschild radius is not a constant and may increase, and that while it may take a long time for the singularities of black holes to merge, their event horizons can merge faster. It is also mentioned that gravity is created by matter in motion and can produce gravity waves.
  • #1
shadowoftruth
1
0
Hello all,

I'm currently doing a research paper on the coalescence of two Supermassive black holes (Sagittarius A and the Supermassive black hole at the center of the Andromeda galaxy) and have come across some difficult quandaries.

First since (to an outside observer) nothing ever comes in contact with a Supermassive black hole's Schwarzschild radius, or any black hole's Schwarzschild radius for that matter, how can two black holes coalesce?

Second, if they can coalesce then is it possible to calculate the minimum mass required for an object falling into a black hole to pass the Schwarzschild radius (to an outside observer).

Third, do gravitational waves have interference patterns?

Finally I've heard that gravity is created by matter in motion is this true?
 
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  • #2
First since (to an outside observer) nothing ever comes in contact with a Supermassive black hole's Schwarzschild radius, or any black hole's Schwarzschild radius for that matter, how can two black holes coalesce?
They will in their own frame.

Finally I've heard that gravity is created by matter in motion is this true?

Gravity waves would be created.
 
  • #3
shadowoftruth said:
Hello all,
First since (to an outside observer) nothing ever comes in contact with a Supermassive black hole's Schwarzschild radius, or any black hole's Schwarzschild radius for that matter, how can two black holes coalesce?

The Schwarzschild radius is not a constant. It can increase.
 
  • #4
It may be true it takes forever for the singularities to merge. It is does not take as long for event horizons to merge.
 

What is a coalescing supermassive black hole?

A coalescing supermassive black hole is a phenomenon in which two or more supermassive black holes merge and form a larger black hole. Supermassive black holes are incredibly dense regions in space with gravitational forces so strong that even light cannot escape from them.

How do coalescing supermassive black holes form?

Supermassive black holes are believed to form from the collapse of giant stars or through the merging of smaller black holes. When two galaxies collide, their central supermassive black holes can also merge, creating a coalescing supermassive black hole.

What happens when coalescing supermassive black holes merge?

When two supermassive black holes merge, they release an enormous amount of energy in the form of gravitational waves. This energy causes the newly formed black hole to recoil, sending it shooting off in a random direction. The surrounding gas and dust also gets disrupted, leading to intense bursts of radiation and the formation of new stars.

How do scientists detect coalescing supermassive black holes?

Scientists detect coalescing supermassive black holes through a variety of methods, including observing changes in the light emitted from the surrounding gas and dust, monitoring the gravitational waves emitted during the merger, and using computer simulations to predict the behavior of coalescing black holes.

What can the study of coalescing supermassive black holes tell us about the universe?

The study of coalescing supermassive black holes can provide insights into the evolution of galaxies and the role of black holes in shaping the structure of the universe. It can also help us better understand the nature of gravity and the behavior of matter under extreme conditions.

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