Development of Cartridge-type Superconducting Receiver and Evolution of Interstellar Matter with Atomic and Molecular Line Observations
| Project/Area Number |
17340058
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
SEKIMOTO Yutaro National Astronomical Observatory of Japan, Advanced Technology Center, Associate Professor (70262152)
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| Co-Investigator(Kenkyū-buntansha) |
TATEMATSU Ken'ichi National Astronomical Observatory of Japan, Division of Radio Astronomy, Professor (40202171)
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| Project Period (FY) |
2005 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥16,800,000 (Direct Cost: ¥15,900,000、Indirect Cost: ¥900,000)
Fiscal Year 2007: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2006: ¥5,100,000 (Direct Cost: ¥5,100,000)
Fiscal Year 2005: ¥7,800,000 (Direct Cost: ¥7,800,000)
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| Keywords | Receiver / submillimeter-wave / superconductivity / SIS mixer / beam pattern / amplitude / phase stability |
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| Research Abstract |
A quantum-noise limited superconducting receiver has been developed in the 385-500 GHz frequency range. It has been demonstrated to have ultra low noise of 100 K. In this submillimeter frequency, it is the lowest noise in sideband separating receiver. In addition, some improvements on RF and IF frequency coverage have been investigated. The IF output power from this receiver is so stable that it is suitable for practical operations to measure and integrate weak signals from astronomical objects. High precision beam pattern and cross polarization measurement system has been developed successfully. The achievements were submitted to a refereed journal.
A submillimeter balanced mixer has also been developed for future heterodyne array. It has low noise temperature in the 400-500 GHz frequency range. The results have been accepted by a refereed journal. As an extension of this research, a prototype of a double balanced mixer has been developed.
To study evaluation of interstellar matter, molecular lines such as N2H+, HC3N toward Orion molecular cloud were observed. The results are published in a refereed journal.
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Report
(4 results)
Research Products
(29 results)
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[Journal Article] A385-500GHz Sideband-Separating(2SB)SIS Mixer Based on a Waveguide Split-block Coupler2006
Author(s)
M.Kamikura, Y.Tomimura, Y.Sekimoto, S.Asayama, W.L.Shan, N.Satou, Y.Iizuka, T.Ito, T.Kamba, Y.Serizawa, T.Noguchi
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Journal Title
International Journal of Infrared and Millimeter Waves 27
Pages: 37-53
Description
「研究成果報告書概要(和文)」より
Related Report
Peer Reviewed
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[Journal Article] A 385-500 GHz Sideband-Separating(2SB) SIS Mixer Based on a Waveguide Split-block Coupler2006
Author(s)
M. Kamikura, Y. Tomimura, Y. Sekimoto, S. Asayama, W. L. Shan, N. Satou, Y. lizuka, T. Ito, T. Kamba, Y. Serizawa, T. Noguchi
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Journal Title
International Journal of Infrared and Millimeter Waves 27
Pages: 37-53
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Journal Article] The Discovery of Diffuse X-Ray Emission in NGC 2024, One of the Nearest Massive Star-forming Regio2006
Author(s)
Ezoe, Y., Kokubun, M., Makishima, K., Sekimoto, Y., Matsuzaki, K.
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Journal Title
Astrophysical Journal 649
Related Report
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[Journal Article] Near Infrared Imaging Survey of Bok Globules : Density Structure2005
Author(s)
R.Kandori, Y.Nakajima, M.Tamura, K.Tatematsu, Y.Aikawa, T.Naoi, K.Sugitani, H.Nakaya, T.Nagayama, T.Nagata, M.Kurita, D.Kato, C.Nagashima, S.Sato
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Journal Title
Astronomical Journal 130
Pages: 2166-2184
Related Report
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