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Researchers Create Time Machine Simulations to Study the Life Cycle of Galaxy Cities In the Past

Time Machine Simulations: For the first time, scientists have created simulations that directly imitate the whole life cycle of some of the most massive groupings of galaxies observed in the distant universe 11 billion years ago. Cosmological simulations are critical for understanding how the universe came to be the way it is today, but many of them disagree with what astronomers view through telescopes.

The majority are statistically designed to look like the real world. Constrained cosmological simulations, on the other hand, are designed to mimic the structures that we perceive in the universe. Most simulations of this kind, on the other hand, have only ever been used to observe our local cosmos, never for distant observations.

Massive galaxy protoclusters piqued the researchers’ interest since they are the forerunners of today’s galaxy clusters before they could coalesce under their own gravity. Recent investigations of distant protoclusters were found to be oversimplified, meaning that they were conducted using simple models rather than simulations


  • Cosmological simulations are required to comprehend the cosmos.
  • Massive galaxy protoclusters piqued the astronomers’ interest.
  • The study’s findings were reported in Nature Astronomy.

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Time Machine Simulations

The study’s findings were reported in Nature Astronomy.They intended to explore how structures began and terminated in a thorough simulation of the true distant cosmos, according to Metin Ata, the first author and researcher at the Kavli Institute for the Physics and Mathematics of the Universe.

Their research resulted in COSTCO, or ‘COnstrained Simulations of The Cosmos Field. ’Project associate professor KheeGan Lee compared creating the simulation to building a time machine. Because light from the distant universe is only now reaching Earth, the galaxies that observatories detect now are a glimpse of the past.

“It’s like taking an old black-and-white photograph of your grandfather and turning it into a film of his life,” he explained.By photographing young grandparent galaxies in the universe and then fast-forwarding their age, the researchers were able to study how clusters of galaxies emerge.

The light from the researchers’ galaxies travelled 11 billion light-years to reach Earth.The most difficult component was taking into account the large-scale surroundings. The researchers were able to consistently take the large-scale environment into account because they had a full simulation, which is why their forecast was more stable, according to them.

Another reason for the simulations was to put the conventional cosmological model to the test, which is used to describe the physics of the universe. By anticipating the final mass and dispersion of items in a given region, researchers could reveal previously overlooked variations in our current understanding of the cosmos.

Using their models, the researchers were able to find evidence of three previously identified galaxy protoclusters and rule out one. In addition, they discovered five more structures that appeared often in their simulations. According to the researchers, the Hyperion protosupercluster, which has 5,000 times the mass of the Milky Way galaxy and will collapse into a massive 300 million light-year filament, is the largest and earliest known proto-super cluster.

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