Geodesics: Orbits and Rays 2025
Geodesics: Orbits and Rays 2025
December 4 - December 5, 2025
Ikebukuro Campus, Rikkyo University
This workshop aims to provide a forum for free discussion on a wide range of theoretical and observational topics, using geodesics as a keyword. This includes theoretical issues in relativistic orbit calculations and observational tests of black holes
Presentations are not limited to completed results; research in progress, preliminary ideas, and topics intended to stimulate discussion are also welcome. Through open and interactive discussions among participants, we hope to foster the exchange of perspectives, the emergence of new research directions, and potential collaborations.
This workshop consists solely of invited talks. Therefore, we invite others to attend as listeners only, but we sincerely hope you will join us. We sincerely look forward to your participation.
Date: December 4 (Thu) - December 5 (Fri), 2025
Venue: Room 4340, Building No. 4, Ikebukuro Campus, Rikkyo University
Hideki Asada (Hirosaki University)
Takeshi Chiba (Nihon University)
Ryuichi Fujita (Otemon Gakuin University)
Tomohiro Harada (Rikkyo University)
Kenta Hioki (Sumitomo Mitsui Banking Corporation)
Takahisa Igata (Gakushuin University)
Akihito Katsumata (Rikkyo University)
Tomohisa Kawashima (National Institute of Technology, Ichinoseki College)
Masashi Kimura (Daiichi Institute of Technology)
Yasutaka Koga (Osaka Institute of Technology)
Kei-ichiro Kubota (Institute for Cosmic Ray Research, The University of Tokyo)
Ryuya Kudo (National Institute of Technology, Ube College)
Kenta Matsuo (Osaka Metropolitan University)
Ken'ichi Nakao (Osaka Metropolitan University)
Keisuke Nakashi (Rikkyo University)
Kota Ogasawara (Meiji University)
Ariadna Palomino (Nagoya University)
Norichika Sago (Kanazawa Medical University)
Hiromi Saida (Daido University)
Tadashi Sasaki (Kumamoto Gakuen University)
Tomoki Takeuchi (Rikkyo University)
Naoki Tsukamoto (Tokyo University of Science)
Chulmoon Yoo (Nagoya University)
TBA
We plan to hold a banquet in the evening of the first day.
Please register using the form below.
Deadlines: Friday, November 21, 2025, 23:59
Venue: Room 4340, Building No. 4, Ikebukuro Campus, Rikkyo University
Tomohiro Harada (Rikkyo U.), Hiromi Saida (Daido U.), Takahisa Igata (Gakushuin U.), Akihito Katsumata (Rikkyo U.)
This workshop is supported by the following JSPS KAKENHI Grants:
"Numerical relativity studies on primordial black hole formation in different mechanisms"
(Grant-in-Aid for Scientific Research (C), No. 24K07027, Principal Investigator: Tomohiro Harada)
"Typical observable of Black Holes and enhancing the possibility of its detection near future"
(Grant-in-Aid for Scientific Research (C), No. 25K07328, Principal Investigator: Hiromi Saida)
"Establishing a theoretical framework for identifying black holes"
(Grant-in-Aid for Scientific Research (C), No. 22K03611, Principal Investigator: Takahisa Igata)
Akihito Katsumata (Rikkyo U.)
a.katsumata_AT_rikkyo.ac.jp（Please replace "_AT_" with "@"）