Just after the universe began 13.8 billion years ago, it suddenly expanded by more than
This sudden increase is one of the most importantmysteries of modern astronomy. The expansion was supposed to create primary density fluctuations that would affect the distribution of the evolution of galaxies. Thus, mapping the distribution of galaxies can exclude inflation models that do not fit the observed data.
Research team led by MasatoShirasaki, an assistant professor at NAO and the Institute of Statistical Mathematics, used the reconstruction method to reconstruct past events. They used ATERUI II, the world's fastest astronomical modeling supercomputer, to create models of 4,000 universes to track how they evolve.
The team found that their method could correct gravitational effects and improve constraints on primary density fluctuations.
We have found this method to be very effective.With its help, we can understand how the volume of the early universe changed. This method could also reduce the required observation time in upcoming galaxy exploration missions.
Masato Shirasaki, Associate Professor at NAO and the Institute of Statistical Mathematics
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