| 研究領域 | ダークマターの正体は何か？－ 広大なディスカバリースペースの網羅的研究 |
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| 研究課題/領域番号 |
21H05451
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| 研究種目 |
学術変革領域研究(A)
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| 配分区分 | 補助金 |
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| 審査区分 |
学術変革領域研究区分(Ⅱ)
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| 研究機関 | 東京大学 |
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研究代表者 |
Eby Joshua 東京大学, カブリ数物連携宇宙研究機構, 特任研究員 (50902095)
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| 研究期間 (年度) |
2021-09-10 – 2023-03-31
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| 研究課題ステータス |
完了 (2022年度)
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| 配分額 *注記 |
2,080千円 (直接経費: 1,600千円、間接経費: 480千円)
2022年度: 910千円 (直接経費: 700千円、間接経費: 210千円)
2021年度: 1,170千円 (直接経費: 900千円、間接経費: 270千円)
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| キーワード | Dark matter / Axions / Boson stars / Axion stars / Astrophysical detection / Terrestrial signals / dark matter / axions / axion stars / terrestrial signals / astrophysical searches / axion bursts / Dark Matter / Axion Stars / Astrophysical Searches / Terrestrial Searches |
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| 研究開始時の研究の概要 |
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.
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| 研究実績の概要 |
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.
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| 現在までの達成度 (段落) |
令和4年度が最終年度であるため、記入しない。
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| 今後の研究の推進方策 |
令和4年度が最終年度であるため、記入しない。
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