2011 Fiscal Year Final Research Report
Very high dynamic range optics for direct detection of extra-solar planets
| Project/Area Number |
21360037
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Applied optics/Quantum optical engineering
|
|---|
| Research Institution | National Astronomical Observatory of Japan |
|---|
Principal Investigator |
NISHIKAWA Jun 国立天文台, 光赤外研究部, 助教 (70280568)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
KUROKAWA Takashi 東京農工大学, 工学研究院, 教授 (40302913)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
TAKEDA Mitsuo 電気通信大学, 電気通信学部, 教授 (00114926)
TAMURA Motohide 国立天文台, 光赤外研究部, 准教授 (00260018)
|
|---|
| Project Period (FY) |
2009 – 2011
|
| Keywords | 干渉計測 / 補償光学 / ナル干渉計 / 系外惑星 / 光学赤外線天文学 |
|---|
| Research Abstract |
We studied an unbalanced nulling interferometer(UNI), adaptive optics, and coronagraphs in order to obtain a very high dynamic range optics for direct detection of extra-solar planets. Aλ/600 rms wavefront correction was made virtually when the accuracy of the adaptive optics wasλ/100 rms thanks to the effect of the UNI, and a noise level of the focal image of the coronagraph was suppressed by more than one order of magnitude. An eight-octant phase mask showed a contrast of 2E-8 with a bandwidth of 10%. A four-quadrant phase mask was shown to function as a stable UNI.
|
-
-
-
-
-
-
-
[Journal Article] An eight-octant phase-mask coronagraph for the Subaru, coronagraphic extreme AO(SCExAO) system : system design and expected performance2010
Author(s)
N. Murakami, O. Guyon, F. Martinache, T. Matsuo, K. Yokochi, J. Nishikawa, M. Tamura, T. Kurokawa, N. Baba, F. Vogt, V. Garrel, T. Yoshikawa
-
Journal Title
Proc. of SPIE
Volume: 7735
Pages: 331-336
DOI
Peer Reviewed
-
-
-
[Journal Article] SPICA Coronagraph2010
Author(s)
Enya, K.; Kotani, T.; Nakagawa, T.; Kataza, H.; Komatsu, K.; Uchida, H.; Haze, K.; Higuchi, S.; Miyata, T.; Sako, S.; Nakamura, T.; Yamashita, T.; Narita, N.;(32人中14番目Tamura, M.; 15番目Nishikawa, J.)
-
Journal Title
Astronomical Society of the Pacific Conference Series
Volume: 430
Pages: 284-290
URL
-
[Journal Article] Achromatic deep nulling with a three-dimensional Sagnac interferometer2009
Author(s)
Yokochi, K., Tavrov, V., A., Nishikawa, J., Murakami, N., Abe, L., Tamura, M., Takeda, M., Kurokawa, T.
-
Journal Title
Optics Letters
Volume: 34
Pages: 1985-1987
DOI
Peer Reviewed
-
-
[Journal Article] Coronagraph Methods on Precise Wavefront Compensation(UNI-PAC) and Deep Achromatic Nulling, Exoplanets and disks : their formation and diversity2009
Author(s)
Nishikawa, J., Yokochi, K., Murakami, N., Abe, L., Kotani, T., Tamura, M., Kurokawa, T., Tavrov, A. V., Takeda M.
-
Journal Title
AIP Conf. Proc
Volume: 1158
Pages: 365-368
DOI
-
[Journal Article] Development of fourth-order nulling coronagraphs for partially resolved stars, Exoplanets and disks : their formation and diversity2009
Author(s)
Murakami, N., Yokochi, K., Nishikawa, J., Tamura, M., Baba, N., Uemura, R., Hashimoto, N., Abe, L., Tavrov, A. V., Kurokawa, T., Takeda M.
-
Journal Title
AIP Conf. Proc
Volume: 1158
Pages: 397-398
DOI
-
[Journal Article] HiCIAO : A High-contrast Instrument for the Next Generation Subaru Adaptive Optics, Exoplanets and disks : their formation and diversity2009
Author(s)
Suzuki, R., Tamura, M., Suto, H., Morino, J.-I., Hashimoto, J., Kudo, T., Kandori, R., Murakami, N., Nishikawa, J., 他13名
-
Journal Title
AIP Conf. Proc
Volume: 1158
Pages: 293-298
DOI
-
-
-
-
-
-
-
-
-
-
-
[Presentation] 非対称ナル干渉法と高コントラスト撮像法2011
Author(s)
西川淳,田村元秀,横地界斗,黒川隆志,村上尚史, ABE Lyu,小谷隆行,村上浩, TAVROV Alexander,武田光夫
Organizer
第11回宇宙科学シンポジウム
Place of Presentation
宇宙航空開発研究機構/宇宙科学研究本部(神奈川県)
Year and Date
2011-01-06
-
-
-
-
-
-
-
[Presentation] High dynamic range coronagraph system for direct detection of exo-planets2010
Author(s)
Yokochi, K., Nishikawa, J., Murakami, N., Abe, L., Kotani, T., Tamura, M., Tavrov, V., A., Takeda, M., Kurokawa, T.
Organizer
第6回太陽系外惑星大研究会
Place of Presentation
国立天文台(東京都)
Year and Date
2010-01-19
-
-
-
-
-
[Presentation] Eight-octant phase-mask coronagraph for detecting Earth-like exoplanets around partially resolved stars2009
Author(s)
Murakami, N., Nishikawa, J., Yokochi, K., Tamura, M., Baba, N., Hashimoto, N., Abe, L.
Organizer
Pathways towards habitable planets
Place of Presentation
Cosmo Caixa, Barcelona, Spain
Year and Date
20090914-18
-
[Presentation] A Coronagraph with an Unbalanced Nulling Interferometer and Adaptive Optics2009
Author(s)
Nishikawa, J., Yokochi, K., Murakami, N., Abe, L., Kotani, T., Tamura, M., Kurokawa, T., Tavrov, A. V., Takeda M.
Organizer
Pathways towards habitable planets
Place of Presentation
Cosmo Caixa, Barcelona, Spain
Year and Date
20090914-01
-
[Presentation] Eight-Octant Phase-Mask Coronagraph by Using Liquid Crystal and Photonic Crystal Devices2009
Author(s)
Murakami, N., Baba, N., Nishikawa, J., Yokochi, K., Tamura, M., Hashimoto, N., Abe, L.
Organizer
OIE' 09 The Eighth Japan-Finland Joint Symposium on Optics in Engineering
Place of Presentation
Morito memorial Hall, Tokyo, Japan
Year and Date
20090903-04
-
[Presentation] High dynamic range optical system for direct detection of exo-planets by unbalanced nulling interferometer and adaptive optics2009
Author(s)
Yokochi, K., Nishikawa, J., Murakami, N., Abe, L., Kotani, T., Tamura, M., Tavrov, V., A., Takeda, M., Kurokawa, T.
Organizer
Conference on Lasers and Electro-Optics(CLEO)
Place of Presentation
Baltimore Convention Center, Baltimore, U. S. A.
Year and Date
20090531-0605
-
-
-
