2013 Fiscal Year Final Research Report
Developement of a wide field gravitational lensing ray-tracing numerical simulation technique for next generation surveys
| Project/Area Number |
23540324
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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) |
2011 – 2013
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| Keywords | 観測的宇宙論 |
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| Research Abstract |
In this research project, I have developed a wide field gravitational lensing ray-tracing numerical simulation technique. We introduced a spherical thin shell lens plane approximation, which enable us to perform a full sky ray-tracing. Thus the primary purpose of this project was achieved successfully. I made a computer program of the full sky ray-tracing simulation in which the new technique was implemented. Using open-use super-computer facilities at Tsukuba University and National Astronomical Observatory Japan, we performed a series of cosmological N-body simulations. And then using the matter distribution in the universe generated by the N-body simulations, we performed the full-sky gravitational lensing ray-tracing simulations. I generated two sets of full-sky gravitational lensing simulation data.
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[Journal Article] Optimal filtering of optical and weak lensing data to search for galaxy clusters : application to the COSMOS field2011
Author(s)
Bellagamba, F., Maturi, M., Hamana, T., Meneghetti, M., Miyazaki, S., Moscardini, L
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Journal Title
Monthly Notices of the Royal Astronomical Society
Volume: Vol.413
Pages: 1145-1157
DOI
Peer Reviewed
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