March 28, 2023

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The new MIT simulation reveals important insights into the birth of the universe

The spontaneous generation of reality is confusing.

The Big Bang, for example, unleashed the value and substance of the universe in an instant, and then pushed it in all directions at the speed of light as temperatures across the developing universe exceeded 1,000 trillion degrees Celsius. The next hundred million years when the universe cooled to the point where there would be particles beyond quarks and photons, when real atoms such as hydrogen and helium appeared, would be called the dark age at the expense of non-existent stars. To provide light.

Eventually, however, the vast clouds of elemental gases compressed themselves enough to ignite, illuminating the previously dark universe, leading to a process. This is why the universe is not a collection of hydrogen and helium atoms. The actual process by which light from those new stars interacts with the surrounding gas clouds to form ionized plasma is not fully understood, but a group Their mathematical model for this turbulent era is enormous and very comprehensive.

The Simulator, named after him The goddess of the dawn, who simulated 100 million cubic light-years by looking at the interactions between gases, gravity and radiation, and simulating the period of cosmic recombination. Researchers can look at the artificial chronology from 400,000 years to a billion years after the Big Bang, and see how changing the variables in the model affects the results produced.

“Nation acts as a bridge to the early universe,” said Aaron Smith, a NASA Einstein Fellow at the MIT Cowley Institute for Astrophysics and Space Research. . “Its purpose is to be a perfect simulated analog for the upcoming surveillance facilities that are poised to fundamentally change our understanding of the universe.”

Thanks to a new algorithm that monitors the formation of a new galaxy and the interaction of light with gas to model the behavior of cosmic dust, it has more detail than any previous simulation.

Rahul Cannon of the Harvard-Smithsonian Astronomical Center has partnered with the Massachusetts Institute of Technology and the Max Blank Institute for Astrophysics. MIT News. “In this way, we follow the automatic re-ionization process when they arise.”

Enabling this simulation A supercomputer in Korching, Germany. 60,000 computing cores work in parallel for 30 million CPU hours, reducing the number required for the Theson. The team has already seen surprising results from the experiment.

“Theson found that light did not travel very far in the early universe,” Cannon said. “In fact, this distance is very small, and it only gets bigger at the end of recombination, increasing 10 times in a few hundred million years.”

That is, light at the end of the reionization period has traveled farther than researchers previously thought. They also point out that the type and mass of the galaxy may affect the recombination process, although Thesson’s team quickly pointed out that real-world observations need support before this hypothesis can be confirmed.

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