| Project/Area Number |
17340061
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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 | The Institute of Physical and Chemical Research |
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Principal Investigator |
MIHARA Takehiro The Institute of Physical and Chemical Research, Cosmic radiation laboratory, senior researcher (20260200)
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| Co-Investigator(Kenkyū-buntansha) |
KOHAMA Mitsuhiro JAXA, ISAS, researcher (30333313)
久保田 あや 独立行政法人理化学研究所, 牧島宇宙放射線研究室, 基礎科学特別研究員 (00391938)
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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 |
¥10,450,000 (Direct Cost: ¥10,000,000、Indirect Cost: ¥450,000)
Fiscal Year 2007: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2006: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 2005: ¥4,400,000 (Direct Cost: ¥4,400,000)
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| Keywords | X-ray polarization / gamma-ray burst / scattering polarimeter / balloon experiment / small solar-sail mission / イメージング偏光計 / KEKフォトンファクトリ / 太陽センサ / 反動時計数検出器 |
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| Research Abstract |
H17: We prepared for the balloon experiment. First, we made the large-area anti-coincidence detector with CsI scintillator. The low-power bleeders with chip resisters and the high-voltage supply with control unit were made for the 9 PMT's. Next, the sun sensor with 2-D Position-sensitive Silicon Diode and a pin hole was made and tested with the real Sun light. We achieved the positional accuracy of +-0.5 degrees in 60 x 60 degree field of view. The gamma-ray polarization instrument was tested in KEK photon factory (PF).
H18 : We carried out a balloon experiment from Sanriku balloon center, JAXA, in June 13, 2008. The lift off was 5 : 33am and the landing on the sea was 17 : 21, followed by the successful recovery. The operation of the instruments was normal during the flight. The observation at 38km・altitude lasted from 10 : 15 to 16 : 40. The gamma-ray burst occurred during the rising phase of the balloon before the observation and we could not detect it. The crab nebula was in the field of view for about 1 hour. We detected the gamma-ray flux of the crab nebula. The upper limit of the gamma-ray polarization was 80% in 30-100keV.
We tested the imaging polarimeter for the use at the focus of the X-ray telescope at KEK PF. It consists of 52 rods of plastic scintillators and 16 CdTe semi conductor detectors around them.
H19 : We analized the balloon data, made an attitude balloon experiment, and proposed for the gamma-ray burst polarization detector onboard the small solar-sail mission.
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