Exciting Possibilities of Multi-Messenger Windows on Cosmic Accelerators
- 日時
- 2025年9月9日(火)13:30 - 15:00 (JST)
- 講演者
-
- 安田 航一朗 (Ph.D. Student, Department of Physics and Astronomy, University of California, Los Angeles, USA)
- 言語
- 英語
- ホスト
- Ryo Namba
Active Galactic Nuclei (AGN) jets are among the most extreme particle accelerators in the universe and are thought to play a key role in the origin of ultra-high-energy cosmic rays. Yet, the physical processes inside these jets, particularly those involving heavy nuclei, remain poorly understood.
In this talk, I will explore how nuclear and atomic processes in AGN jets can leave distinctive multi-messenger signatures, from neutrino production via nuclear decays to characteristic gamma-ray features from nuclear excitations. These phenomena offer a new window into the microscopic physics of nuclei under astrophysical extreme conditions, while also serving as macroscopic probes of jet composition and acceleration mechanisms.
I will also discuss how upcoming observations, including neutrino flavor studies and MeV gamma-ray missions, could provide critical tests of these ideas and shed light on the role of nuclear physics in shaping cosmic accelerators.
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