Immediately after the universe emerged 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 the NAO and the Institute of Statistical Mathematics, applied the reconstruction method to reconstruct past events. They used ATERUI II, the world's fastest supercomputer designed for astronomical modeling, to create models of 4,000 universes to track how they evolved.
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 the help of it, we can understand how the volume of the early universe changed. Also, this method may reduce the required observation time in upcoming missions to explore galaxies.
Masato Shirasaki, Associate Professor of the NAO and the Institute of Statistical Mathematics
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