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Study of Low Energy Gamma-Rays from Supernova Remnants (SM1987A) Abroard Balloons

Research Project

Project/Area Number 63041040
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionField Research
Research InstitutionUniversity of Tokyo

Principal Investigator

KAMAE Tuneyoshi  Faculty of Science, University of Tokyo, Professor, 理学部, 教授 (90011618)

Co-Investigator(Kenkyū-buntansha) BRAGA Joao  Institute de Pesquisas Espacias (INPE), Research Worker, 研究員
NERI Angelo  Institute de Pesquisas Espacias (INPE), Research Worker, 研究員
SAKURAI Takahisa  NASA-Marshall Space Flight Center, Research Worker, 研究員
CORREA Ricardo  Institute de Pesquisas Espacias (INPE), Director of Balloon Group, 気球部長
TAKAHASHI Yoshiyuki  Physics Department, University of Alabama, Associate Professor, 物理学科, 助教授
WEISSKOPF M.  NASA-Marshall Space Flight Center, Chief Worker, 主任研究員
MURAKAMI Hiroyuki  Faculty of Science, Rikkyo University, Research Associate, 理学部, 助手
NAKAGAWA Michio  Faculty of Science, Osaka City University, Associate Professor, 理学部, 助教授 (40047238)
WUENSHE Alexandre  Institute de Pesquisas Espacias (INPE), Research Worker, 研究員
MOTOBAYASHI Toru  Faculty of Science, Rikkyo University, Associate Professor, 理学部, 助教授 (20116114)
TAKAHASHI Tadayuki  Faculty of Science, University of Tokyo, Research Associate, 理学部, 助手 (50183851)
ENOMOTO Ryoji  National Laboratory for High Energy Physics, Research Associate, 助手 (80183755)
NOMACHI Masaharu  National Laboratory for High Energy Physics, Research Associate, 助手 (90208299)
CHIBA Junsei  National Laboratory for High Energy Physics, Associate Professor, 助教授 (50126124)
AKIYAMA Hiromitu  The Institute of Space and Astronautical Science, Research Associate, 助手 (80013407)
OTA Shigeo  The Institute of Space and Astronautical Science, Research Associate, 助手 (90013680)
FUJII Masami  The Institute of Space and Astronautical Science, Research Associate, 助手 (20013691)
YAMAGAMI Takamasa  The Institute of Space and Astronautical Sciense, Research Associate, 助手 (40013718)
YAJIMA Nobuyuki  The Institute of Space and Astronautical Science, Professor, 教授 (30200489)
Project Period (FY) 1988 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥23,000,000 (Direct Cost: ¥23,000,000)
Fiscal Year 1990: ¥9,000,000 (Direct Cost: ¥9,000,000)
Fiscal Year 1989: ¥9,000,000 (Direct Cost: ¥9,000,000)
Fiscal Year 1988: ¥5,000,000 (Direct Cost: ¥5,000,000)
KeywordsBalloon-borne experiments / Balloon / SN1987A / Hard X-ray / gammaray detector / Brazil
Research Abstract

We have carried out balloon-borne experiments in collaboration with the INPE (Institute of Space Research) Brazilian balloon group. The major objectives are to launch large stratospheric balloons and to observe hard X-rays/gamma-rays from astronomical objects such as SN1987A. The detectors were prepared by the japanese group (Univ. of Tokyo, ISAS and others). The launching operation was responsibility of the brazilian side while the radio communication was responsibility of the Japanese group.
In 1988, two balloons were launched from Pocos de Caldas on November 24 and 28. One balloon (5X10^6ft^3) carried the hard X-ray detector (187kg) and the other (20X10^6ft^3) carried the gamma-ray detector (865 Kg).
In the last two years, we moved to the INPE balloon base in Cachoerira Paulista (45 00 34W, 22 39 44S). We have set up a communication facility that allows frequent campaign for several years. Using the facility, we have launched balloons carring our new hard X-rays/gamma rays detector (Welcome1 (Well-type Compound Eye-1, 670kg)).
In 1989, one balloon (6.6X10^6ft^3) was launched on Dec. 22. Unfortunately, due to failure of the electronics in vacuum condition at the ceiling altitude, we could not take scientific data. The star camera system, command system and other equipment, however worked well and gave us technical information on the detector.
In 1990, two balloons (6.6 and 8.8X10^6ft^3) were launched on Nov. 14 and Nov. 29. In the first flight, we could not control the direction of our detector due to failure of the telecommand system and took background data. In the second flight, we succeeded in observing SN1987A for about 4 hours. Data is now under analysis. The background data at the ceiling altitude shows that the sensitivitiesーa few X10^<-6>/cm^2/s/keV and ー10^<-4>/cm^2/s are attained for the continuum spectrum and line spectrum respectively. These values are about 5 times superior to the previous type of detectors used in balloon-borne experiments.

Report

(1 results)
  • 1990 Final Research Report Summary
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] T.Takahashi et al,: "A Pulse Shape Discrimination and an Online System for the BalloonーBorne HardxーRay/GammaーRay Detector" Proceedings of The Seventeenth International Symposiun of Space Technotogy and Science (1990). 1619-1626 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T.Kamae et al.: "Use of a Large Photodiode in CsI(Tl)Scintillation Counters" Nucl.Instr.Meth.(1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T.Kamae: "New Developments in LowーEnergy Cosmic GammaーRay Detection" Advances in Space Research.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T.Kamae et al.: "Detector to Study LowーFlux Hard XーRay/GammaーRay Sources." Advances in Space Research.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Takahashi et al.: "A Pulse Shape Discrimination and on Online System for the Balloon-Borne Hard X-Ray/Gamma-Ray Detector" Proc. of The 17th Intl. Symp. of Space Techn. and Scin.1619-1626 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Kamae et al.: "Use of a Large Photodiode in CsI(T1) Scintillation Counters" Nucl. Instr. Meth.(1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Kamae: "New Developments in Low-Energy Cosmic Gamma-Ray Detection" Advances in Space Research.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Kamae et al.: "Detector to Study Low-Flux Hard X-Ray/Gamma-Ray Sources" Advances in Space Research.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary

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Published: 1988-04-01   Modified: 2016-04-21  

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