• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Study on origins of cosmic rays with energies above 10^<16>eV

Research Project

Project/Area Number 16340068
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionTokyo Institute of Technology

Principal Investigator

KAKIMOTO Fumio  Tokyo Institute of Technology, Graduate School of Science, Professor (00092544)

Co-Investigator(Kenkyū-buntansha) TSUNESADA Yoshiki  Tokyo Institute of Technology, Graduate School of Science, Assistant Professor (50401526)
吉井 尚  愛媛大学, 理学部, 教授 (00036360)
荻尾 彰一  東京工業大学, 大学院・理工学研究科, 助手 (20242258)
Project Period (FY) 2004 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥16,110,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥810,000)
Fiscal Year 2007: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2006: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2005: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2004: ¥6,200,000 (Direct Cost: ¥6,200,000)
KeywordsCosmic rays / air showers / acceleration sites / chemical composition / longitudinal development / propagation in the Galaxy / supernova remnant / neutron star / 宇宙線伝播
Research Abstract

The purpose of this research is to determine the chemical composition of primary cosmic rays with energies above 10^<16>eV. The observation site is at the laboratory for cosmic ray physics at mount Chacaltaya in Bolivia. This laboratory is situated at 5,200m above the sea level, and then this is the world highest one among the cosmic ray observation sites. In this study we measure equi-intensity curves of cosmic ray air showers. A high altitude experiment enables us to get the curves in wider atmospheric depth. The primary composition reflects deeply on the features of these curves. So that the observed curves are compared with those obtained with a Monte Carlo simulations and then we derive the result.
For this study we started to install a new air shower array and finished at the end of 2006. However it took about a half year more for us to reduce the induced noises through the recycled signal cables, which were used at the prior air shower array.
From now we observe air showers at least for more five years, and then the final result is obtained.

Report

(5 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (30 results)

All 2008 2007 2006 2005 2004 Other

All Journal Article (9 results) (of which Peer Reviewed: 2 results) Presentation (19 results) Remarks (2 results)

  • [Journal Article] The cosmic ray primary composition at the Knee region from lateral distributions of atmospheric Cherenkov photons in extensive air showers2008

    • Author(s)
      H. Tokuno, F. Kakimoto, et. al.
    • Journal Title

      Astroparticle Physics (In print)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] The cosmic ray primary composition at the Knee region from ateral distributions of atmospheric Cherenkov photons in extensive air showers2008

    • Author(s)
      H., Tokuno, F., Kakimoto, et. al.
    • Journal Title

      in Astroparticle Physics (To be published)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Cosmic ray observation at mount Chacaltaya for beyond the knee region2007

    • Author(s)
      Y, Tsunesada, F. Kakimoto, et. al.
    • Journal Title

      Proc. of 29th International Cosmic Ray Conference

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Cosmic ray observation at mount Chacaltaya for beyond the knee region2007

    • Author(s)
      Y., Tsunesada, F., Kakimoto, et. al.
    • Journal Title

      Proc. of 30th International Cosmic Ray Conference (CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Cosmic Ray Observation at Mount Chacaltaya for beyond the Knee Region2007

    • Author(s)
      Y. Tsunesada, F. Kakimoto, et. al.
    • Journal Title

      Proceedings of 30th International Cosmic Ray Conference (CD-ROM)

    • Related Report
      2007 Annual Research Report
  • [Journal Article] A new air shower array at mount Chacaltaya2005

    • Author(s)
      A. Fruhata, Y. Tsunesada, F. Kakimto, et. al.
    • Journal Title

      Proc. of 29th International Cosmic Ray Conference 6

      Pages: 329-332

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] A new air shower array at mount Chacaltaya2005

    • Author(s)
      A., Fruhata, Y., Tsunesada, F., Kakimoto, et. al.
    • Journal Title

      Proc. of 29th International Cosmic Ray Conference 6

      Pages: 329-332

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] The energy spectrum and the chemical composition of primary cosmic rays with energies from 10^<14> to 10^<16>eV2004

    • Author(s)
      S. Ogio, F. Kakimoto, et. al.
    • Journal Title

      Astrophysical Journal 612

      Pages: 268-275

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] The energy spectrum and the chemical composition of primary cosmic rays with energies from 10^<14> to 10^<16> eV2004

    • Author(s)
      S., Ogio, f., Kakimoto, et. al.
    • Journal Title

      Ap. J.

      Pages: 268-275

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] BASJEアレイ拡張計画V2008

    • Author(s)
      垣本史雄
    • Organizer
      日本物理学会2006年秋季大会
    • Place of Presentation
      奈良女子大学
    • Year and Date
      2008-09-29
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Determination of mass composition of primary Cosmic rays with energies above 1016 eV with air Cherenkov light measurement at high altitude.2008

    • Author(s)
      Y., Tsunesada
    • Organizer
      Annual meeting of the physical society of Japan
    • Place of Presentation
      Kinki University
    • Year and Date
      2008-03-29
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 高山での空気チェレンコフ光観測による10^<16>eV以上の宇宙線原子核組成決定2008

    • Author(s)
      常定芳基
    • Organizer
      日本物理学会2008年第63回年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-24
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 高山での空気チェレンコフ光観測による10^<16>eV以上の宇宙線原子核組成測定2008

    • Author(s)
      常定芳基
    • Organizer
      第63回日本物理学会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-24
    • Related Report
      2007 Annual Research Report
  • [Presentation] Cosmic ray observation at mount Chacaltaya for beyond the knee region2007

    • Author(s)
      常定芳基
    • Organizer
      30th International Cosmic Ray Conference
    • Place of Presentation
      Merida, Mexico
    • Year and Date
      2007-07-09
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] チャカルタヤ山新空気シャワーアレイによるKnee領域以上の宇宙線観測2007

    • Author(s)
      常定芳基
    • Organizer
      日本物理学会2007年春季大会
    • Place of Presentation
      首都大学東京
    • Year and Date
      2007-03-25
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Observation of cosmic rays with energies above the knee region with a new air shower array at Mt. Chacaltaya2007

    • Author(s)
      Y., Tsunesada
    • Organizer
      Spring meeting of the physical society of Japan
    • Place of Presentation
      Tokyo Metropolitan University
    • Year and Date
      2007-03-25
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Extension of the BASJE air shower array V2006

    • Author(s)
      F., Kakimoto
    • Organizer
      Autumn meeting of the physical society of Japan
    • Place of Presentation
      Nara Woman's University
    • Year and Date
      2006-09-29
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] BASJEアレイ拡張計画IV2006

    • Author(s)
      垣本史雄
    • Organizer
      日本物理学会2006年第61回年次大会
    • Place of Presentation
      愛媛大学
    • Year and Date
      2006-03-29
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] BASJEによる10^<16>eV以上の一次宇宙線化学組成測定計画I2006

    • Author(s)
      常定芳基
    • Organizer
      日本物理学会2006年第61回年次大会
    • Place of Presentation
      愛媛大学
    • Year and Date
      2006-03-29
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Extension of the BASJE air shower array IV2006

    • Author(s)
      F., Kakimoto
    • Organizer
      Annual meeting of the physical society of Japan
    • Place of Presentation
      Ehime University
    • Year and Date
      2006-03-29
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Measurement plan of the chemical composition of primary cosmic rays with energies above 10^<16> eV by BASJE group2006

    • Author(s)
      Y., Tsunesada
    • Organizer
      Annual meeting of the physical society o Japan
    • Place of Presentation
      Ehime University
    • Year and Date
      2006-03-29
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] BASJEアレイ拡張計画III2005

    • Author(s)
      垣本史雄
    • Organizer
      日本物理学会2005年秋季大会
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2005-09-24
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Extension of the BASJE air shower array III2005

    • Author(s)
      F., Kakimoto
    • Organizer
      Autumn meeting of the physical society of Japan
    • Place of Presentation
      Osaka City University
    • Year and Date
      2005-09-24
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] A new air shower array at mount Chacaltaya2005

    • Author(s)
      常定芳基
    • Organizer
      29th International Cosmic Ray Conference
    • Place of Presentation
      Pune, India
    • Year and Date
      2005-08-06
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] BASJEアレイ拡張計画II2005

    • Author(s)
      垣本史雄
    • Organizer
      日本物理学会2005年第60回年次大会
    • Place of Presentation
      東京理科大学
    • Year and Date
      2005-03-24
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Extension of the BASJE air shower array II2005

    • Author(s)
      F., Kakimoto
    • Organizer
      Annual meeting of the physical society of Japan
    • Place of Presentation
      Tokyo University of Science
    • Year and Date
      2005-03-24
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] BASJEアレイの拡張計画I2004

    • Author(s)
      吉井尚
    • Organizer
      日本物理学会2004年秋季大会
    • Place of Presentation
      高知大学
    • Year and Date
      2004-09-29
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Extension of the BASJE air shower array I2004

    • Author(s)
      H., Yoshii
    • Organizer
      Autumn meeting of the physical society of Japan
    • Place of Presentation
      Kochi University
    • Year and Date
      2004-09-29
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Remarks] 「研究成果報告書概要(和文)」より

    • URL

      http://wwwcr.phys.titech.ac.jp/

    • Related Report
      2007 Final Research Report Summary
  • [Remarks]

    • URL

      http://wwwcr.phys.titech.ac.jp/

    • Related Report
      2007 Annual Research Report

URL: 

Published: 2004-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi