Scope of the workshop
The workshop will focus on compact object binaries ranging from stellar mass objects to supermassive black holes. The workshop aims to discuss our current understanding of gravitational-wave sources based on the previous gravitational-wave and electromagnetic observations and what we will be able to learn from future observations. Topics to be considered at the workshop include:
- Dynamical channel of binary black hole formation
- Binary stellar evolution/population
- Binary black holes in AGNs
- Intermediate - supermassive binary black hoes
- Electromagnetic signatures of compact binaries
- Gravitational-wave data analysis
The workshop is hosted by the Research Center for the Early Universe at University of Tokyo.
Participation and Program
All participants are requested to register by filling out the "Registration" form via the menu on the left of this page. Participants interested in contributing with a talk must also submit an abstract by filling out the "Title of talk" and "Abstract", in the registration form. The workshop can accept a limited number of participants due to the capacity of the room. In order to receive full consideration, all information must be received by DATE, 2026.
We plan to focus on invited and contribution talks in the first week. In the second week, we will have a small number of talks and a large fraction of time will be devoted to open discussion.
Venue
The workshop will take place at Science building No. 1 in the Hongo campus of University of Tokyo( Access map to the Hongo Campus from the airports and a link to the Google map).
Registration fee
We will be collecting the registration and dinner fees at the workshop venue in cash. Please kindly bring some Japanese yen with you. The registration fee is 5000 JPY (~33 USD, 30 EUR). The cost of workshop dinner is 7,000 JPY.
Workshop Dinners
To be determined.
Accommodation
We recommend any business hotel in the Hongo or Ueno area. For example, APA Hotel Keisei Ueno-Ekimae is a business hotel at a walkable distance from UTokyo, just across the Ueno park. Other APA hotels are also nearby (Ueno Eki Minami, Ueno Ekimae, Shin Okachimachi Ekimae). There are many other hotels in the Ueno area.
If you want to stay farther away from the university, commuting by metro is also an easy option. The Hongo campus is well connected to the Marunouchi and Oedo lines (Hongo Sanchome station), the Namboku line (Todaimae st.) and the Chiyoda line (Nezu st.).
For using local transportation, we recommend buying a rechargeable Pasmo (or Suica) card at the airport.
Invited Speakers
Organizers
- Kenta Hotokezaka, University of Tokyo
- Daniel D'Orazio, Space Telescope Science Institute
- Martin Pessah, Niels Bohr Institute
- Johan Samsing, Niels Bohr Institute
- Soichiro Morisaki, University of Tokyo
- Masaki Ando, University of Tokyo
- Tomoya Kinugawa, Shinshu University
Contact
- Workshop LOC <
>resceu-nbia-2026-group at g.ecc.u-tokyo.ac.jp
We gratefully acknowledge the support by the Research Center for the Early Universe at University of Tokyo, the JST FOREST Program (JPMJFR2136) and the JSPS Grant-in-Aid for Scientific Research (23H01169, 23H04900).

