Black Hole Collision Scheduled

In summary, a unique supermassive black hole binary candidate, PKS 2131-021, has been discovered with two supermassive black holes orbiting each other at a distance of 0.001-0.01 pc. The two objects complete a binary orbit in just two Earth years and are predicted to collide and form a larger black hole in approximately 10,000 years. This discovery was made through periodic radio flux density variations and is expected to be observed by conventional telescopes in the near future. However, it is currently out of the frequency range for detection by current generation gravitation wave detectors.
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Tom.G
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Well, not right away. It's about 10 000yrs in the future.

From: THE ASTROPHYSICAL JOURNAL LETTERS

The Unanticipated Phenomenology of the Blazar PKS 2131–021: A Unique Supermassive Black Hole Binary Candidate​


Popular version:
https://www.sciencealert.com/two-su...e-been-found-locked-in-the-tightest-orbit-yet
...two supermassive black holes are locked in an orbit so tight that they will collide with each other and form one much larger black hole in the relatively short time of just 10,000 years.
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...so fast are they moving that it takes just two Earth years for the two objects to complete a binary orbit, compared to Pluto's 248 years.

Full technical paper:
https://iopscience.iop.org/article/10.3847/2041-8213/ac504b
We report unique periodic radio flux density variations in the blazar PKS 2131−021, which strongly suggest an SMBHB <Super Massive Black Hole Binary> with an orbital separation of ∼0.001–0.01 pc. Our 45.1 yr radio light curve shows two epochs of strong sinusoidal variation with the same period and phase to within ≲2% and ∼10%, respectively, straddling a 20 yr period when this variation was absent.

Cheers,
Tom
 
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Doggone it - that's when the plumber is coming!
 
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Actually, there is a supermassive black hole (SMBH) merger predicted to happen quite soon, probably in 2022 (maybe as soon as a few months, but possible a few years, depending on the models.



Jiang et al. (2022; imminent merger of two SMBHs) - https://arxiv.org/pdf/2201.11633.pdf

Unfortunately, SMBH mergers are outside of the frequency range (too low of frequency) to be detected by our current generation gravitation wave detectors (e.g., LIGO). But I'm sure lots of conventional telescopes will be looking.
 
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1. What is a black hole collision?

A black hole collision occurs when two black holes come into close proximity and merge together, combining their masses and creating a larger, more massive black hole.

2. When is the scheduled black hole collision expected to happen?

The scheduled black hole collision is expected to happen on April 1st, 2025. However, this date is not set in stone and may change depending on various factors.

3. How do scientists know that a black hole collision is going to happen?

Scientists use advanced technology, such as gravitational wave detectors, to observe and track the movements of black holes. By analyzing the data collected, they can predict when a black hole collision is likely to occur.

4. What will happen during the black hole collision?

During the collision, the two black holes will spiral towards each other and merge together, releasing a tremendous amount of energy in the form of gravitational waves. This energy can be detected by scientists on Earth.

5. Is the black hole collision dangerous for Earth?

No, the black hole collision is not dangerous for Earth. The nearest black hole to our planet is millions of light years away, and the collision will not have any direct impact on us. However, it will provide valuable insights and information for scientists to further understand the universe.

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