2022 Fiscal Year Final Research Report
Study of Dark Energy and Neutrino mass by near future large scale observations
| Project/Area Number |
20K03937
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
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| Research Institution | Kyoto Sangyo University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 大規模銀河サーベイ / 超新星 / 弱い重力レンズ / 赤方偏移と虚栄関係 |
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| Outline of Final Research Achievements |
It is known that Dark matterand dark energy occupy about 95% of the energy density of the present universe. I studied the observational method to study these dark side of the universe. In particularwe develope a new method to study weak lesing which is actively used in the observation of dark matter and dark energy.
We show that our method does improve the accuracy of the dark matter distribution compared with the previous method. Also we pointed out that the lensing dispersion in the magnitude-redshift relation obtained from the combination of the observation future supenovae and gravitational wave from merging neutron stars
may be used to observe accurately the natore of dark energy.
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| Free Research Field |
宇宙論
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| Academic Significance and Societal Importance of the Research Achievements |
天文学の観測装置、および観測技術は現在進行形で発展し、従来の観測方法ではデータに含まれる化学的状を十分引き出すことはできない。本研究では将来的な観測データが含んでいる科学的情報を十分引き出すための方法を提示し実際に実現可能であることを示した点に学術的意義がある。
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