The dynamics of the Universe are dominated by dark matter, which determines the future development of the planets.
International astrophysicists have created a new model of the distribution of dark matter in local space and found that there are unknown filamentous bridge structures between galaxies.
Based on the latest information, the Universe includes 4.9% of ordinary matter, the rest is dark matter. The latter consists of 85% of the total mass of the cosmos.
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In their new study, astrophysicists have created a model with a wide range of simulations of space objects, including galaxies, gases, visible matter, and all known dark matter data.
When given certain information, the model can essentially fill in the gaps based on what it has looked at before
said Associated professor of astronomy and astrophysics at Penn State and a corresponding author of the study Donghui Jeong.
The map from our models doesn’t perfectly fit the simulation data, but we can still reconstruct very detailed structures. We found that including the motion of galaxies — their radial peculiar velocities — in addition to their distribution drastically enhanced the quality of the map and allowed us to see these details.
“Having a local map of the cosmic web opens up a new chapter of cosmological study,” said the researcher.
We can study how the distribution of dark matter relates to other emission data, which will help us understand the nature of dark matter. And we can study these filamentary structures directly, these hidden bridges between galaxies.
They compared their work with a real picture of the local space. It turned out that dark matter prevails in the dynamics of the Universe and this matter determines our fate.
“Because dark matter dominates the dynamics of the universe, it basically determines our fate,” said Jeong.
So we can ask a computer to evolve the map for billions of years to see what will happen in the local universe. And we can evolve the model back in time to understand the history of our cosmic neighborhood.
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