| Project/Area Number |
20K22348
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0203:Particle-, nuclear-, astro-physics, and related fields
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Vardanyan Valeri 東京大学, カブリ数物連携宇宙研究機構, 特任研究員 (10876238)
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| Project Period (FY) |
2020-09-11 – 2024-03-31
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| Project Status |
Completed (Fiscal Year 2023)
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| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | Cosmology / Gravitational Waves / Primordial Black Holes / Cross-Correlations / Multimessenger Astronomy / Large-scale Structure / 原始重力波 / Primordial black holes / Multimessenger astronomy / Primordial GW / Large Scale Strcuture / Gaussian Processes / Cross Correlation |
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| Outline of Research at the Start |
We are able to observe the universe in two major ways, namely, electromagnetic radiations from astrophysical objects, and gravitational waves. Within the scope of this project I will be exploring ways to combine the two observational channels in order to test cosmological models.
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| Outline of Final Research Achievements |
I studied gravitational waves (GW) in the cosmological context. I have developed novel approaches for binary redshift estimation based on GW-galaxy correlations. Novel results have also been obtained in modeling and evaluating the detection prospects of astrophysical and primordial GW backgrounds.
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| Academic Significance and Societal Importance of the Research Achievements |
The methods developed within this project can be applied to upcoming GW data and our theoretical results can be used for validating future GW-based cosmological measurements. Japanese research community plays an important role in international
GW research and this project adds to such efforts.
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