Nov 22, 13th Kavli IPMU-ICRR Joint Public Lecture "See the unseen Universe"

The 13th Kavli IPMU-ICRR Joint Public Lecture "See the unseen Universe" will be held on Sunday., Nov. 22 at The University of Tokyo Hongo campus.


Date &Time: Sunday, November 22, 2015,13:00-16:00 (doors open at 12:30)
Venue: Koshiba Hall (15 minutes walk from Hongo-sanchome Station, 15 minutes walk from Nezu Station, 10 minute walk from Todaimae Station)
7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan (Faculty of Science Building 1, 2nd floor, Hongo campus, The University of Tokyo)
Admission: Free
Language: Japanese and English (Simultaneous and mutual interpretation will be available.)
Seat: 170 (prior registration required)
Click here to register.(deadline: extended to November 5, due to the trouble applying on November 3rd.Thank you for you registration! Now it's closed.)
*Closing date for the registration : November 6, 2015
Further Inquiry: Please contact Kavli IPMU Public Relations office (
※Please change "_at_ " to @.


Lecture 1



Dark Matter: Mystery, Imagination, and Challenge

This talk will have three parts. In the first one observational evidence for the existence of Dark Matter will be presented. In the second part the main ideas about what Dark Matter might be will be discussed. The third part will then describe the main challenges we face in experiments where we want to see Dark Matter in our laboratories here on Earth. Our XMASS experiment here in Japan - underground in the Kamioka mine - will serve as an example as to how these challenges are addressed.


Kai Martens, Kavli IPMU Associate Professor

Kai Martens is Associate Professor at Kavli IPMU, the University of Tokyo. He received his PhD from Heidelberg University in Germany (studying particles at CERN in Switzerland) before coming to neutrinos and Super-Kamiokande in Japan. As faculty at the University of Utah, Kai measured highest energy cosmic rays in the USA. Back underground in Kamioka since 2008, his research focuses on the nature of Dark Matter.


Lecture 2


Look into our dynamic Universe by high-energy gamma rays

Within our Milky Way a star explodes. Its remains scatter out in space, shining with an intensity tens of times brighter than the stars around it. This is in fact, a cosmic jet spewing out of a massive black hole. These are nature’s own particle accelerators, and are believed to be the origin of cosmic rays. In this talk, we will take you to the frontline of high-energy gamma ray astronomy research. What are the latest things scientists have learned, and what do they hope to find with Cherenkov Telescope Array currently under construction.


Masaaki Hayashida, ICRR Project Assistant Professor

Masaaki Hayashida is Project Assistant Professor at the Institute for Cosmic Ray Research (ICRR), University of Tokyo. He earned his M.Sc. in Physics from the University of Tokyo, and Ph.D. from the University of Munich. He worked as a researcher at the Max Planck Institute for Physics, Stanford University, and Kyoto University before joining the ICRR in 2013.



Round Table


Kai Martens, Masaaki Hayashida


The one and only device in the world

15:20 16:00

Teatime with lecturers