2011 Fiscal Year Final Research Report
investigation on the history of structure formation in the universe and distribution of the dark matter by gravitational lensing
| Project Area | Probing the Dark Energy through an Extremely Wide & Deep Survey with Subaru Telescope |
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| Project/Area Number |
18072001
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
CHIBA Masashi 東北大学, 大学院・理学研究科, 教授 (50217246)
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| Project Period (FY) |
2006 – 2011
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| Keywords | 暗黒物質 / 重力レンズ |
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| Research Abstract |
We have studied the distribution of Dark Matter and the formation history of galaxy and galaxy cluster. In particular we have developed a new method to measure the shape of background galaxies which gives more accurate measurement of lensing signal and applied real date to detect detailed distribution of Dark Matter in some clusters. We have performed deep observation using Subaru for Halo component of nearby galaxies and obtained their detailed structure and components. This give us an important suggestion for the formation of galaxy. We have examined a new possible survey project to observe on the oldest components in nearby galaxies using HSC.
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[Journal Article] Structure and Population of the Andromeda Stellar Halo from a Subaru/Suprime-Cam Survey2010
Author(s)
Tanaka, M., Chiba, M., Komiyama, Y., Guhathakurta, P., Kalirai, J. S., lye, M.
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Journal Title
アストロフィジカルジャーナル
Volume: 708
Pages: 1168-1203
Peer Reviewed
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[Journal Article] Integral Field Spectroscopy of the Quadruply Lensed Quasar 1RXS J1131-1231: New Light on Lens Substructures2007
Author(s)
H. Sugai, A. Kawai, A., Shimono, A., Hattori, T., Kosugi, G., Kashikawa, N., Inoue, K. T., Chiba, M.
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Journal Title
Astrophysical Jornal
Volume: 660巻
Pages: 1016-1022
Peer Reviewed
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