Press Releases

DATE2024.02.02 #Press Releases

Successful reproduction of fast radio bursts on〝Fugaku〟

Disclaimer: machine translated by DeepL which may contain errors.

-The Origin of the Largest Radio Explosion in the Universe-

Kyoto University

Chiba University

School of Science, The University of Tokyo

Kyushu University

Summary of Presentations

A research group led by Masanori Iwamoto, Research Assistant Professor at the Yukawa Institute for Theoretical Physics, Kyoto University, Associate Professor Yosuke Matsumoto at International Strategic Research Institute in Chiba University, Associate Professor Takanobu Amano and Professor Masahiro Hoshino at The University of Tokyo and Professor Shuichi Matsukiyo at Kyushu University, have successfully reproduced fast radio bursts using the supercomputer "Fugaku".

A fast radio burst is the largest radio explosion in the universe, which suddenly shines in radio waves for a very short time. They are believed to originate from shock waves formed around neutron stars with extremely strong magnetic fields called magnetars, but until now there has been no theoretical support for this belief. The results of this very large-scale simulation of the shock wave by Fugaku have demonstrated for the first time that the radio waves in the simulation are consistent with previous observations and correctly reproduce fast radio bursts.

Since the radio signals of fast radio bursts contain information about the universe they pass through, it is thought that they can be used as a tool to explore the evolution and structure of the universe. To this end, it is important to understand where and how fast radio bursts are generated, and this research is expected to make great strides in this direction and to have a ripple effect on other fields such as cosmology.

The results of this research were published online in the U.S. international journal "Physical Review Letters" on January 16, 2024.

Figure: Shock wave structure at the end of the simulation. The left side depicts the magnetic field, and the radio waves are emitted toward the front side. On the right is the plasma density, and an elongated structure is created by the radio waves.

For more information, please visit the Kyoto University website.


Journal name
Physical Review Letters
Title of paper