| Project/Area Number |
63044071
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| Research Category |
Grant-in-Aid for Overseas Scientific Survey.
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | Faculty of Science, Kyoto University |
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Principal Investigator |
SATO Humitaka Professor of Kyoto University, 理学部, 教授 (90025370)
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| Co-Investigator(Kenkyū-buntansha) |
MURAKI Yasushi Associate Professor of Nagoya University, 理学部, 助教授 (70013430)
KIFUNE Tadashi Associate Professor of ICRC, Univ. of Tokyo, 宇宙線研, 助教授 (40011621)
NAGANO Motohiko Professor of Inst. for Cosmic Ray Research, Univ. of Tokyo, 宇宙線研, 教授 (00013384)
WATASE Yoshiyuki Professor of National High Energy Institute, 教授 (70018662)
MASAIKE Akira Professor of Kyoto University, 理学部, 教授 (40022587)
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| Project Period (FY) |
1987 – 1989
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| Project Status |
Completed (Fiscal Year 1989)
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| Budget Amount *help |
¥12,000,000 (Direct Cost: ¥12,000,000)
Fiscal Year 1989: ¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 1988: ¥6,000,000 (Direct Cost: ¥6,000,000)
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| Keywords | Super Nova / SN1987A / Cosmic Gamma-rays / Pulsar |
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| Research Abstract |
A search for ultra high-energy gamma-ray emission from Supernova 1987A has been made from 13 October 1987 with the aid of the Monbusho International Scientific Research Program. Although we have not seen ultra high-energy gamma-rays from SN1987A (as of early 1990), the world's most stringent upper limits have been obtained in our experiment: Igamma<5.7X10^<-14>cm^2.s^<-1> for Egamma<greater than or equal>75 TeV. In January 1988, we observed very high-energy gamma-rays associated with the X-ray flare observed by the Ginga satellite. Since the recent optical curve of SN1987A indicates a pulsar component at L<less than or equal> 10^<38> erg.sec, it is important to continue this experiment to observe SN1987A.
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