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Search for dark matter and observation of cosmic gamma-rays by CALET

Research Project

Project/Area Number 16K05382
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionRitsumeikan University

Principal Investigator

Mori Masaki  立命館大学, 理工学部, 教授 (80210136)

Project Period (FY) 2016-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords天体ガンマ線 / 暗黒物質 / 粒子加速
Outline of Final Research Achievements

We analyzed 5-year data acquired with the CALET detector on board the International Space Station and obtained gamma-ray candidates above 10 GeV. We searched for monochromatic (line) gamma-ray signals in the data expected to originate from pair annihilation or decay of dark matter particles.
Assuming four regions of interest in the Galactic center region corresponding to four Galactic halo density profile models, we obtained energy spectra of gamma-ray candidates excluding point source regions. These spectra are consistent with a power-law form with single index. Thus we derived upper limits on fluxes of line gamma-ray signals from the observed spectra. Compared with the expected flux of signal assuming that the Galactic halo consists of dark matter, we calculated limits on the annihilation cross section times the relative velocity for the pair annihilation case and on the lifetime for the decay case. These results will be reported in international conferences and in academic journals.

Academic Significance and Societal Importance of the Research Achievements

ビッグバンで始まった宇宙で、銀河が形成される際の主役は未知の暗黒物質であるとされ、宇宙の質量の大部分を占めると考えられているが、その正体はわかっていない。暗黒物質が未知の重い素粒子であった場合、対消滅や崩壊を起こして、特徴的な単色のガンマ線(ラインガンマ線)を放出することが予想されている。国際宇宙ステーションに設置された宇宙線検出器CALETの約5年分の観測データを用いて、ラインガンマ線の信号を探索したが、そのような徴候は観測されず、暗黒物質の性質についての制限を与える結果を得た。これは、暗黒物質の正体を解明する上での手掛かりを与える重要な結果といえる。

Report

(6 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (50 results)

All 2021 2020 2019 2018 2017 2016 Other

All Int'l Joint Research (15 results) Journal Article (13 results) (of which Int'l Joint Research: 11 results,  Peer Reviewed: 13 results,  Open Access: 10 results,  Acknowledgement Compliant: 3 results) Presentation (14 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results) Book (2 results) Remarks (6 results)

  • [Int'l Joint Research] Lousiana State University/NASA/Goddard Space Flight Center/Washington University in St. Louis(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Siena and INFN/University of Florence, IFAC and INFN/University of Pisa and INFN(イタリア)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] 早稲田大学/宇宙航空研究開発機構/青山学院大学(日本)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Lousiana State University/NASA/Goddard Space Flight Center/Washington University in St. Louis(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of Siena and INFN/University of Florence, IFAC and INFN/University of Pisa and INFN(イタリア)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] 早稲田大学/宇宙航空研究開発機構/青山学院大学(日本)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Lousiana State University/NASA/Goddard Space Flight Center/Washington University in St. Louis(米国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] University of Siena and INFN/University of Florence, IFAC and INFN/University of Pisa and INFN(イタリア)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] 早稲田大学/宇宙航空研究開発機構/青山学院大学(日本)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Lousiana State University/NASA/Goddard Space Flight Center/Washington University in St. Louis(米国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] University of Siena and INFN/University of Florence, IFAC and INFN/University of Pisa and INFN(イタリア)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] 早稲田大学/宇宙航空研究開発機構/青山学院大学(日本)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Louisiana State University/NASA/Goddard Space Flight Center/Washington University-St. Louis(米国)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] University of Siena and INFN/University of Florence, IFAC and INFN/University of Pisa and INFN(イタリア)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] 早稲田大学/宇宙航空研究開発機構/青山学院大学(日本)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Dark matter signals on a laser interferometer2020

    • Author(s)
      Tsuchida Satoshi、Kanda Nobuyuki、Itoh Yousuke、Mori Masaki
    • Journal Title

      Physical Review D

      Volume: 101 Issue: 2 Pages: 023005

    • DOI

      10.1103/physrevd.101.023005

    • NAID

      120006781999

    • URL

      https://ocu-omu.repo.nii.ac.jp/records/2020415

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Direct Measurement of the Cosmic-Ray Carbon and Oxygen Spectra from 10??GeV/n to 2.2??TeV/n with the Calorimetric Electron Telescope on the International Space Station2020

    • Author(s)
      Adriani O.、Akaike Y.、Asano K.、Asaoka Y.、Bagliesi M.G.、Berti E.、Bigongiari G.、Binns W.R.、Bongi M.、Brogi P.、Bruno A.、Buckley J.H.、Cannady N.、Castellini G.、Checchia C.、Cherry M.L.、Collazuol G.、Ebisawa K.、Fuke H.、Gonzi S.、Guzik T.G.、Hams T.、Hibino K.、Ichimura M. 他
    • Journal Title

      Physical Review Letters

      Volume: 125 Issue: 25 Pages: 251102-251102

    • DOI

      10.1103/physrevlett.125.251102

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On-orbit Operations and Offline Data Processing of CALET onboard the ISS2018

    • Author(s)
      Y. Asaoka, M. Mori et al.
    • Journal Title

      Astroparticle Physics

      Volume: 100 Pages: 29-37

    • DOI

      10.1016/j.astropartphys.2018.02.010

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Extended Measurement of the Cosmic-Ray Electron and Positron Spectrum from 11 GeV to 4.8 TeV with the Calorimetric Electron Telescope on the International Space Station2018

    • Author(s)
      Adriani O.、Mori M.、他89名(CALET collaboration)
    • Journal Title

      Physical Review Letters

      Volume: 120 Issue: 26 Pages: 1-1

    • DOI

      10.1103/physrevlett.120.261102

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Search for GeV Gamma-Ray Counterparts of Gravitational Wave Events by CALET2018

    • Author(s)
      Adriani O.、Mori M.、他89名(CALET collaboration)
    • Journal Title

      The Astrophysical Journal

      Volume: 863 Issue: 2 Pages: 160-160

    • DOI

      10.3847/1538-4357/aad18f

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Characteristics and Performance of the CALorimetric Electron Telescope (CALET) Calorimeter for Gamma-Ray Observations2018

    • Author(s)
      Cannady N.、Mori M.、他91名(CALET collaboration)
    • Journal Title

      The Astrophysical Journal Supplement Series

      Volume: 238 Issue: 1 Pages: 5-5

    • DOI

      10.3847/1538-4365/aad6a3

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Detection of the thermal component in GRB 160107A2018

    • Author(s)
      Yuta Kawakubo, Masaki Mori et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Issue: 1 Pages: 6-6

    • DOI

      10.1093/pasj/psx152

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The gamma-ray spectral feature from Kaluza-Klein dark matter annihilation and its observability2017

    • Author(s)
      Satoshi Tsuchida and Masaki Mori
    • Journal Title

      International Journal of Modern Physics D

      Volume: 27 Issue: 01 Pages: 1750187-1750187

    • DOI

      10.1142/s0218271817501875

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Energy Spectrum of Cosmic-ray Electron and Positron from 10 GeV to 3 TeV Observed with the Calorimetric Electron Telescope on the International Space Station2017

    • Author(s)
      Adriani O., Akaike Y., Asano K., et al.
    • Journal Title

      PHYSICAL REVIEW LETTERS

      Volume: 119 Issue: 18 Pages: 181101-181101

    • DOI

      10.1103/physrevlett.119.181101

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The electron plus positron spectrum from annihilation of Kaluza-Klein dark matter in the Galaxy2017

    • Author(s)
      Satoshi Tsuchida and Masaki Mori
    • Journal Title

      International Journal of Modern Physics D

      Volume: 該当なし Issue: 09 Pages: 1750095-1750095

    • DOI

      10.1142/s021827181750095x

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Energy calibration of CALET onboard the International Space Station2017

    • Author(s)
      Y.Asaoka, Y.Akaike, S.Torii, M.Mori, H.M.Motz, S.Ozawa, Y.Shimizu, T.Tamura, T.Terasawa et al.
    • Journal Title

      Astroparticle Physics

      Volume: 91 Pages: 1-10

    • DOI

      10.1016/j.astropartphys.2017.03.002

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Relativistic electron precipitation at International Space Station: Space weather monitoring by Calorimetric Electron Telescope2016

    • Author(s)
      R.Kataoka, Y.Asaoka, S.Torii, T.Terasawa, S.Ozawa, T.Tamura, Y.Shimizu, Y.Akaike, M.Mori,
    • Journal Title

      Geophysical Research Letters

      Volume: 43 Issue: 9 Pages: 4119-4125

    • DOI

      10.1002/2016gl068930

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] CALET Upper Limits on X-Ray and Gamma-Ray Counterparts of GW1512262016

    • Author(s)
      O. Adriani, Y. Akaike, K. Asano, Y. Asaoka, M. G. Bagliesi, G. Bigongiari, W. R. Binns, S. Bonechi, M. Bongi, P. Brogi, J. H. Buckley, N. Cannady, G. Castellini, C. Checchia, M. L. Cherry, G. Collazuol, V. Di Felice, K. Ebisawa, T. Sakamoto, H. Tomida, et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 829 Issue: 1 Pages: 20-24

    • DOI

      10.3847/2041-8205/829/1/l20

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] CALET による高エネルギーガンマ線観測の最新結果2021

    • Author(s)
      森 正樹
    • Organizer
      第21 回宇宙科学シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] CALET による高エネルギーガンマ線観測の最新結果2021

    • Author(s)
      森 正樹
    • Organizer
      日本物理学会 第76 回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] CALET による高エネルギーガンマ線観測の最新成果2020

    • Author(s)
      森 正樹
    • Organizer
      日本物理学会 2020 年秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] High-Energy Gamma-ray Observations Using the CALorimetric Electron Telescope (CALET) on the ISS2019

    • Author(s)
      Masaki Mori, Yoichi Asaoka, for the CALETcollaboration
    • Organizer
      36th International Cosmic Ray Conference, Madison, Wisconsin, USA
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] CALETにおける高エネルギーガンマ線の観測と解析II2019

    • Author(s)
      森正樹, 銭田大亮, 浅岡陽一, 鳥居祥二, 川久保雄太, N. Cannady, M. Cherry, 他CALETチーム
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] CALETによる高エネルギーガンマ線の観測と解析2019

    • Author(s)
      森正樹、浅岡陽一、鳥居祥二、小澤俊介、藤田崚、吉川康太、N. Cannady、M.L. Cherry、他CALETチーム
    • Organizer
      日本物理学会第74回年次大会, March 15, 2019
    • Related Report
      2018 Research-status Report
  • [Presentation] Search for gamma-ray counterparts of gravitational wave events by CALET2018

    • Author(s)
      Masaki Mori, Yoichi Asaoka, for the CALET collaboration
    • Organizer
      42nd COSPAR Assembly, July 14-22, 2018, Pasadena, 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 国際宇宙ステーション搭載検出器CALETによる宇宙線・ガンマ線の観測2018

    • Author(s)
      森正樹、CALETチーム
    • Organizer
      東北大学大学院理学研究科セミナー, September 11, 2018
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] CALETによるトランジェントガンマ線源の観測2018

    • Author(s)
      森正樹, 浅岡陽一, 鳥居祥二, 佐藤郁也, 田中瑞樹, N. Cannady, M.L. Cherry, 他CALETチーム
    • Organizer
      日本物理学会 第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Search for gamma-ray emission from electromagnetic counterparts of gravitational wave sources with the CALET calorimeter2017

    • Author(s)
      Masaki Mori and Yoichi Asaoka for the CALET collaboration
    • Organizer
      35th International Cosmic Ray Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Concentration of Kaluza-Klein dark matte in the Galactic center: constraints from gamma-ray signals2017

    • Author(s)
      Satoshi Tsuchida and Masaki Mori
    • Organizer
      35th International Cosmic Ray Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] CALETによる銀河拡散ガンマ線及びガンマ線点源の観測2017

    • Author(s)
      森正樹, 浅岡陽一, 佐藤郁也, 鳥居祥二, N. Cannady, M.L. Cherry, 他CALETチーム
    • Organizer
      日本物理学会 2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Current status of the CALET mission2016

    • Author(s)
      Masaki Mori for the CALET collaboration
    • Organizer
      6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma2016)
    • Place of Presentation
      Heidelberg, Germany
    • Year and Date
      2016-07-11
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Observability of gamma-ray spectral feature from Kaluza-Klein dark matter2016

    • Author(s)
      Masaki Mori and Satoshi Tsuchida
    • Organizer
      6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma2016)
    • Place of Presentation
      Heidelberg, Germany
    • Year and Date
      2016-07-11
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Book] 宇宙物理学ハンドブック2020

    • Author(s)
      高原文郎、家正則、小玉英雄、高橋忠幸(編)、森 正樹(分担執筆)
    • Total Pages
      912
    • Publisher
      朝倉書店
    • ISBN
      9784254131277
    • Related Report
      2019 Research-status Report
  • [Book] 天体物理学2019

    • Author(s)
      Arnab Rai Choudhuri(著)、森 正樹(訳)
    • Total Pages
      448
    • Publisher
      森北出版
    • ISBN
      9784627275119
    • Related Report
      2019 Research-status Report
  • [Remarks] 立命館大学理工学部物理科学科 森研究室

    • URL

      http://www.ritsumei.ac.jp/se/rp/physics/lab/astro/

    • Related Report
      2020 Annual Research Report 2019 Research-status Report 2018 Research-status Report 2017 Research-status Report 2016 Research-status Report
  • [Remarks] CALET - CALorimetirc Electron Telescope

    • URL

      http://calet.jp/

    • Related Report
      2020 Annual Research Report 2019 Research-status Report 2018 Research-status Report 2017 Research-status Report
  • [Remarks] CALET-USA - CALorimetric Electron Telescope

    • URL

      http://calet.phys.lsu.edu/

    • Related Report
      2020 Annual Research Report 2019 Research-status Report 2018 Research-status Report 2017 Research-status Report 2016 Research-status Report
  • [Remarks] 宇宙ステーション・きぼう 広報・情報センター 高エネルギー電子・ガンマ線観測装置(CALET)

    • URL

      http://iss.jaxa.jp/kiboexp/equipment/ef/calet/

    • Related Report
      2020 Annual Research Report
  • [Remarks] 宇宙ステーション・きぼう 広報・情報センター 高エネルギー電子・ガンマ線観測装置(CALET)

    • URL

      http://iss.jaxa.jp/kiboexp/equipment/ef/calet/

    • Related Report
      2019 Research-status Report 2018 Research-status Report 2017 Research-status Report 2016 Research-status Report
  • [Remarks] CALET - CALorimetric Electron Telescope

    • URL

      http://calet.jp/

    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2022-02-21  

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