| Project/Area Number |
14204022
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
素粒子・核・宇宙線
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| Research Institution | Kyoto University |
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Principal Investigator |
TANIMORI Toru Kyoto University, Department of Physics, Professor, 大学院・理学研究科, 教授 (10179856)
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| Co-Investigator(Kenkyū-buntansha) |
KUBI Hidetoshi Kyoto University, Department of Physics, Assistant, 大学院・理学研究科, 助手 (40300868)
KUSHIDA Junko Kyoto University, Department of Physics, Assistant, 理学部, 助手 (80366020)
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| Project Period (FY) |
2002 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥53,950,000 (Direct Cost: ¥41,500,000、Indirect Cost: ¥12,450,000)
Fiscal Year 2005: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2004: ¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
Fiscal Year 2003: ¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2002: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
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| Keywords | High energy gamma-rays / Supernova Remnant / Origin of Cosmic rays / Shock wave acceleration / Air Cherenkov Telescopes / Gamma-ray Pulsar / Stereo observation / 宇宙船加速起源 / パルサー / 宇宙線 / シンクロトロン放射 |
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| Research Abstract |
In this period, we have constructed three 10m Imaging Air Cherenkov Telescopes (IACT) for the observation of celestial TeV gamma rays at Wommera in South Australia, and hegun the stereo observation using those three telescope since 2004 April. Our group made efforts to develop the electronics system and online system of these telescope. In particular, in 2004 December, we realized the specialized trigger system for the stereo observation in which at least two telescopes detects the shower within about 1 μsec. This system enables us to reject the background trigger generated by the accidental hits and cosmic muons, and to obtain the stable operation. In addition we have studied the effect of the night sky background to the imaging analysis using Flash Analog Digitizer (FADC), which records the pulse shapes of the photo-multiplier with the 500 MHz sampling rate. By this study, the precise measurement of the pulse shape is expected to improve the angular resolution and the rejection power of the hadron shower. Also we organized the sub-analysis team in the CANGAROO (Kyoto Univ., Tokai Univ., and Konan Univ.) for the independent analysis. We independently developed the analysis program tools for the stereo observation. Using this program we are analyzing the several SNRs, SNR RXJ0852, 1713, and Kepler, and two pulsar nebulae : Crab and PSR1509. In particular we have obtained the whole TeV gamma-ray image from RXJ0852. Also we have get the upper limit for the TeV gamma-ray emission from the Kepler.
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