Publicly Offered Research
Grant-in-Aid for Transformative Research Areas (A)
The majority of the matter in the universe is of unknown substance we call Dark Matter. The particle content of Dark Matter may be in the form of particles called axions, which would have a tendency to form gravitationally-bound substructure in the galaxy. We are pursuing a more clear and precise understanding of these Dark Matter clumps, in the hopes that it will elucidate improved search strategies in current and near-future experiments, both in Japan and internationally.
This work has let to many important and interesting results. One study enabled by this grant was published under the title 'Global view of axion stars with nearly Planck-scale decay constants', in which I investigated the properties of axion stars arising from symmetry-breaking near the Planck scale. A second study, 'Probing relativistic axions from transient astrophysical sources', was conducted with colleagues at IPMU and proposed a novel signal type for current and near-future axion experiments; this work has led to several follow-up works. This work was also featured in the Snowmass 2023 process in the US.This grant also enabled many international presentations of this work, allowing for a greater impact within the physics community in Japan, and also greater international reach across Europe and in the US.
令和4年度が最終年度であるため、記入しない。
All 2022 Other
All Int'l Joint Research (2 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results, Peer Reviewed: 1 results, Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 4 results, Invited: 6 results)
Physics Letters B
Volume: 825 Pages: 136858-136858
10.1016/j.physletb.2021.136858
