2018 Fiscal Year Final Research Report
Deep Universe explored by neutrinos
| Project Area | Unification and Development of the Neutrino Science Frontier |
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| Project/Area Number |
25105005
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| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Chiba University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
石原 安野 千葉大学, 大学院理学研究院, 准教授 (40568929)
奥村 公宏 東京大学, 宇宙線研究所, 准教授 (70361657)
間瀬 圭一 千葉大学, 大学院理学研究院, 助教 (80400810)
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| Project Period (FY) |
2013-06-28 – 2018-03-31
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| Keywords | 宇宙線 / ニュートリノ / 南極 / 素粒子 |
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| Outline of Final Research Achievements |
High energy neutrino astronomy is now blooming as a new astronomical research frontier based on the rich amount of observational data. We conducted analyses of the data taken by the IceCube Neutrino Observatory at South Pole and revealed that there is a bulk of cosmic neutrinos at energies raging from TeV to PeV. Their major origins have been still unknown, but the present analyses has brought a convincing path toward identifying neutrino emitters by accumulating more data in near future. We have also acquired key technologies to enhance our neutrino detection capability by developing the new high-function detector called D-Egg. D-Egg has been selected as one of the major optical sensors in the up-coming upgrade of IceCube.
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| Free Research Field |
宇宙線物理学、天文学
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| Academic Significance and Societal Importance of the Research Achievements |
人類は宇宙を観測する手段として、ガリレオの時代から一貫して光、すなわち電磁波信号の検出に依存してきた。しかし2010年代に、重力波、そしてニュートリノという全く新たな信号を宇宙観測の手段として利用できるまでに至った。本研究成果は、それ自体未知の部分が多い素粒子ニュートリノを、活動的宇宙を観測する手段として定着させ、ニュートリノ天文学の急速な発展を実現した。
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