Press Release 2022.5.12

Astronomers reveal
first image of the black hole
at the heart of our galaxy

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Topics 2022.9.1

The Ministry of Science and
Innovation of the Kingdom of Spain,
KEK and UTokyo Sign MoU
to Promote Hyper-Kamiokande Project

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Press Release 2022.4.5

Most Distant Galaxy
Candidate Yet

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Press Release 2021.5.6

A New Window to See
Hidden Side of
Magnetized Universe

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Press Release 2021.4.22

ALMA Discovers
Rotating Infant Galaxy
with Help of Natural Cosmic Telescope

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Press Release 2021.4.14

Telescope Units in
Unprecedented Observations
of Famous Black Hole

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Press Release 2020.8.21

Introduction of Gadolinium
into Super-Kamiokande and
the Start of New Observations

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Topics 2020.6.22

CTA Prototype LST-1 Detects
Very High-Energy Emission
from the Crab Pulsar

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Press Release 2020.6.17

Observation of Excess Events
in the XENON1T Dark Matter Experiment

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Press Release 2019.12.5

The Tera from Outer Space /
Astronomers discover
the most energetic gamma-ray burst
ever witnessed

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Topics 2020.2.12

The Hyper-Kamiokande project
is officially approved

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A video clip that features experimental facilities of ICRR, in Hida city, Japan, Utah, USA and LaParma, Canary Islands, Spain



A 360 panoramic view exploring ICRR experimental facilities, Super-Kamiokande and KAGRA located underground in Kamioka Mine, Japan



Hyper-Kamiokande is the next generation large-scale experiment for the study of neutrinos and nucleon decays. The Hyper-Kamiokande project was started in February 2020 and aims to…



Neutrino Researches at the Super-Kamiokande explained by Professor Masayuki Nakahata, Director of Kamioka Observatory, ICRR


Telescope Array

Professor Hiroyuki Sagawa of ICRR explains the Telescope Array project that aims to detect ultra-high-energy cosmic rays at Utah, USA



Professor Masahiro Teshima of ICRR explains CTA project that aims to detect high-energy gamma rays from outer space by ground-based telescope



Professor and Director of KAGRA Observatory Masatake Ohashi explains KAGRA project which aims to contribute to explore the gravitational wave astronomy.

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Research Projects

Neutrino And Astroparticle Research


Super-Kamiokande aims to reveal the Universe’s history and to explore the nature of elementary particles through the observation of neutrinos and a discovery of proton decay.

High Energy Cosmic Ray Research

Telescope Array(TA)

Aiming at highest energy cosmic ray physics by detecting weak light from atmosphere.

Astrophysics and Gravity Research

Gravitational Wave

We aim to promote gravitational wave astronomy by participating the world gravitational wave observation network with the large-scale cryogenic gravitational wave telescope, KAGRA.

More About Research Projects



The Institute for Cosmic Ray Research (ICRR) conducts observations and studies cosmic rays from various aspects. Its predecessor was a lodge for research, called Asahi Hut, built on Mt.Norikura based on an Asahi Academic Grant. In 1953, it was transformed into the Cosmic Ray Observatory of The University of Tokyo.

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