An Enormous Cosmological Simulation Wraps Up, Recreating Even More of the Universe - by spacewriter
More than 120,000 computer cores in the SuperMUC-NG in Germany went to work on the data for MillenniumTNG. That tracked the formation of about a hundred million galaxies in an area of space about 2,400 million light-years across. Then the Cosma8 at Durham went to work computing a larger volume of the Universe but filled with a trillion simulated dark matter particles and another 10 billion that tracked the action of massive neutrinos.
A composite model of matter distribution in a galaxy formation simulation made by the TNG Collaboration. Astronomers have long known about something called “intrinsic galaxy alignments.” This is basically a tendency for galaxies to orient their shapes in similar directions, for reasons that no one quite understands.
Now that JWST is probing even earlier times in cosmic history, it will be interesting to see if the simulations predict what it finds. Kennan suggests that there could well be disagreement between the real universe and simulations. If that happens, it will hand cosmologists yet another puzzling question about the earliest epochs of cosmic history.The next decades of cosmological studies will benefit heavily from simulations such as Millennium TNG.
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