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The XENON collaboration is an international collaboration between the United States, Europe and Japan, involving the KMI and ISEE at the Nagoya University, the Kavli IPMU, WPI at the University of Tokyo, the Institute for Cosmic Ray Research at the University of Tokyo and Kobe University. The collaboration has observed for the first time the scattering of neutrinos and xenon nuclei produced by the Sun in the XENONnT experiment, a dark matter search experiment currently in operation. The results were …

A joint research group led by Professor Takahiro Tanaka (Kyoto University) and Associate Professor Yuko Urakawa (KEK, and Designated Associate Professor at KMI) has applied the “split universe approach,” in which the universe is recomposed into a coarse-grained mosaic art, to greatly simplify numerical calculations of primordial gravitational waves. This approach enables the numerical calculation of various models of the universe, including those that have been difficult to analyze due to the complex numerical calculations required. It is expected to …

The J-PARC muon g-2/EDM experimental group, which includes Professor Toru Iijima, Designated Lecturer Kazuhito Suzuki, Associate Professor Kenji Inami, and graduate students Kazuji Sumi, Koichi Ueda, and Ayaka Kondo, has successfully cooled and accelerated positively charged muons for the first time in the world. This achievement marks a major step toward launching an ultra-precise verification of the Standard Model. Additionally, a completely new imaging technique using accelerated muons is being considered for various applications, including muon microscopy and interdisciplinary research …

Abstract Our groups, led by Associate Professor Kazuhiro Nakazawa at Nagoya University/KMI and first-year Ph.D. student Yuki Omiya at the Graduate School of Science, in collaboration with a research team led by Project Researcher Kohei Kurahara at the Mizusawa VLBI Observatory, National Astronomical Observatory of Japan (NAOJ), discovered an extended radio emission in the Hydra cluster, about 150 million light-years away. Galaxy clusters are the largest self-gravitating objects in the Universe, surrounded by hot gas, magnetic fields, and cosmic rays …

On February 20, 2024, the Belle II experiment resumed data acquisition for physics measurements. Belle II is a particle physics experiment designed to investigate the properties of particles, such as B mesons, produced by the SuperKEKB accelerator. This research aims to study new physical phenomena that are crucial for understanding the mechanisms behind the creation of the universe. Operations were suspended for about 18 months starting in the summer of 2022, and major improvements were made to both the accelerator …

The Division for Theoretical Studies in KMI seeks to fill a full-time, non-tenure-track, designated Assistant Professor position. For more details, please read PDF.

The X-ray astronomy satellite XRISM, primarily developed by JAXA Institute of Space and Astronautical Science (ISAS), is set to launch on August 26th September 7th (Thursday). Equipped with the world’s most advanced X-ray spectroscopic capability, the XRISM satellite will shed light on the dynamic nature of the universe. It will unveil the velocity, turbulence, and other motions of high-temperature plasma in high-energy celestial bodies like galaxy clusters and black holes with unparalleled precision. The Nagoya University group, led by Assoc. …

The Flavor Physics International Research Center (FlaP) in KMI seeks to fill a full-time, non-tenure-track, designated Associate Professor or Assistant Professor position. For more details, please read PDF.

The Division for Experimental Studies in KMI seeks to fill a full-time, non-tenure-track, designated Associate Professor or Assistant Professor position. For more details, please read PDF.

Abstract Our group led by Associate Professor Kazuhiro Nakazawa at Nagoya University/KMI, and doctoral course student Yuki Omiya at the Graduate School of Science, in collaboration with the National Astronomical Observatory of Japan, Tokyo University of Science, Hiroshima University, Saitama University, JAXA Institute of Space and Astronautical Science, Tokyo Metropolitan University, Netherlands Institute for Space Sciences, and Toho University, succeeded in estimating the length, width, depth, and merging velocity of the shock wave just born in the nearby merging galaxy …