2016 Fiscal Year Final Research Report
Development of 3+1 dimensional gravitational lensing numerical simulation method for precision cosmology researches
| Project/Area Number |
26400285
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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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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 観測的宇宙論 |
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| Outline of Final Research Achievements |
The purposes of this research project are (1) to construct accurate theoretical models of gravitational lensing effects by large-scale structures, and (2) to generate the mock observational data of gravitational lensing surveys. To achieve these goals, we developed the numerical simulation program suite for a full-sky gravitational lensing ray-tracing simulation, and generated data-set of the full sky gravitational lensing data. We utilized the data-set to estimate the sample variance of the number counts of galaxy clusters detected by gravitational lensing technique, and to evaluate the covariance matrix of galaxy-galaxy lensing effects.
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| Free Research Field |
宇宙物理
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