Cosmology of neutrino oscillation in the early Universe

• Project Area: Exploration of Particle Physics and Cosmology with Neutrinos
• Project/Area Number: 19H05114
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: 郡 和範 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (50565819)
• Project Period (FY): 2019-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: ニュートリノ / 初期宇宙 / ビッグバン元素合成 / 宇宙マイクロ波背景放射 / ステライルニュートリノ / 宇宙論 / ニュートリノ振動 / インフレーション / 再加熱 / ニュートリノ質量 / 大統一理論

Outline of Research at the Start

本期間内に現代的な3世代解析の下宇宙初期のニュートリノ振動を考慮した宇宙の再加熱温度の下限を出すことを目標とする。また初期宇宙のニュートリノ振動でつくられるステライルニュートリノの量について検討する。新学術内での本研究課題と他の研究班との関係において本研究の特徴を生かしC01とは宇宙素粒子の理論面での緊密な連携をとりC02,A03,A04とは、素粒子論と素粒子実験の知見を共有し新たな宇宙像を描く予定である。実際それらの研究班のメンバー内にこれまで共著論文を執筆してきた共同研究者達が多数含まれている。私の初期宇宙の宇宙論の専門知識を用いこれらの研究班と有機的な連携をとることに貢献する。

Outline of Annual Research Achievements

Holger Motz, et al, Phys. Rev. D 102, 083019 (2020)において、ニュートリノの質量を生む素粒子論モデルの宇宙論的な検証方法の提案を行った。U(1)_{e－μ}というフレーバー依存するU(1)ゲージ理論を含む、U(1)_{e－μ}×Z_3×Z_2というゲージ群の対称性の下で、2ループの効果により、ニュートリノの第1,2世代に質量を持たせるモデルである。このモデルにおいて予言される一番軽い中性ディラックフェルミ粒子はダークマターの候補となり、タウレプトンとの結合が極めて弱いためさまざまな実験からの制限を逃れているという特徴がある。今回、銀河中でのダークマター対消滅における電子陽電子対生成により宇宙線実験における陽電子観測の実験値からのさらなる制限を議論した。このモデルにおいて対消滅断面積にブライトーウイグナー型の共鳴機構が働いて対消滅断面積のCMB観測による上限をさけつつCALET実験の電子+陽電子の過剰シグナルを説明できることを明らかにした。

Takuya Hasegawa, et al, JCAP 08 (2020) 015でインフレーション後の宇宙の最高温度が数MeVであるシナリオにおいて標準理論の左巻き3世代ニュートリノに右巻きのニュートリノが混合している場合、右巻きニュートリノはニュートリノ振動のみでつくられるが熱化しない。そのためビッグバン元素合成と宇宙マイクロ波背景放射に影響することなくその存在が許される可能性がある。インフラトン場が100％電磁的な粒子に壊れる場合、再加熱温度が5MeV程度であればそうした宇宙論的な制限に抵触せずLSNDをはじめとする短いベースラインでのニュートリノ振動実験などで示唆されている質量約1eV程度の右巻きニュートリノの混合角などの性質と無矛盾であることを示した。

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] LAPTh, Annecy/Montpellier/Paris No.7 U(フランス)
• [Int'l Joint Research] Queen Mary, U of London/Oxford U/Leeds U(英国)
• [Int'l Joint Research] Max Planck Inst./Bonn U(ドイツ)
• [Int'l Joint Research] IBS, Daejeon/APCTP, Pohang(韓国)
• [Int'l Joint Research] Aarhus U./Bohr Inst.(デンマーク)
• [Int'l Joint Research]
• [Int'l Joint Research] LAPTh/Montpellier U/IAP(フランス)
• [Int'l Joint Research] Oxford U/Queen Mary U of London(英国)
• [Int'l Joint Research] Aarhus U/Niels Bohr Institute(デンマーク)
• [Journal Article] Spins of Primordial Black Holes Formed in the Radiation-dominated Phase of the Universe: First-order Effect (2021)
  • Author(s): Harada Tomohiro、Yoo Chul-Moon、Kohri Kazunori、Koga Yasutaka、Monobe Takeru
  • Journal Title: The Astrophysical Journal Volume: 908 Issue: 2 Pages: 140-140
  • DOI: 10.3847/1538-4357/abd9b9
  • Peer Reviewed / Open Access
• [Journal Article] Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation (2021)
  • Author(s): H. Abdalla et al
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2021 Issue: 02 Pages: 048-048
  • DOI: 10.1088/1475-7516/2021/02/048
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Solar-mass primordial black holes explain NANOGrav hint of gravitational waves (2021)
  • Author(s): Kohri Kazunori、Terada Takahiro
  • Journal Title: Physics Letters B Volume: 813 Pages: 136040-136040
  • DOI: 10.1016/j.physletb.2020.136040
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre (2021)
  • Author(s): Acharyya A et al.
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2021 Issue: 01 Pages: 057-057
  • DOI: 10.1088/1475-7516/2021/01/057
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The First Three Seconds: a Review of Possible Expansion Histories of the Early Universe (2021)
  • Author(s): Allahverdi Rouzbeh、... Takahashi Tomo、.... et al
  • Journal Title: The Open Journal of Astrophysics Volume: 4 Issue: 1 Pages: 1-1
  • DOI: 10.21105/astro.2006.16182
  • Peer Reviewed / Open Access / 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 Station (2020)
  • 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
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Abundance of primordial black holes in peak theory for an arbitrary power spectrum (2020)
  • Author(s): Yoo Chul-Moon、Harada Tomohiro、Hirano Shin’ichi、Kohri Kazunori
  • Journal Title: Progress of Theoretical and Experimental Physics Volume: 2021 Issue: 1 Pages: 1300-1300
  • DOI: 10.1093/ptep/ptaa155
  • Peer Reviewed / Open Access
• [Journal Article] Constraints on electron-scattering interpretation of XENON1T excess (2020)
  • Author(s): Chigusa So、Endo Motoi、Kohri Kazunori
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2020 Issue: 10 Pages: 035-035
  • DOI: 10.1088/1475-7516/2020/10/035
  • Peer Reviewed / Open Access
• [Journal Article] Big-bang nucleosynthesis with sub-GeV massive decaying particles (2020)
  • Author(s): Kawasaki Masahiro、Kohri Kazunori、Moroi Takeo、Murai Kai、Murayama Hitoshi
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2020 Issue: 12 Pages: 048-048
  • DOI: 10.1088/1475-7516/2020/12/048
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] CALET on the International Space Station: the first three years of observations (2020)
  • Author(s): Brogi P、Adriani O、Akaike Y、Asano K、Asaoka Y、Bagliesi M G、Berti E、Bigongiari G、Binns W R、Bonechi S、Bongi M、Bruno A、Buckley J H、Cannady N、Castellini G、Checchia C、Cherry M L、Collazuol G、Di Felice V、Ebisawa K、Fuke H、Guzik T G、Hams T、Hibino K、Ichimura M 他
  • Journal Title: Physica Scripta Volume: 95 Issue: 7 Pages: 074012-074012
  • DOI: 10.1088/1402-4896/ab957d
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Cosmic-ray signatures of dark matter from a flavor dependent gauge symmetry model with neutrino mass mechanism (2020)
  • Author(s): Motz Holger、Okada Hiroshi、Asaoka Yoichi、Kohri Kazunori
  • Journal Title: Physical Review D Volume: 102 Issue: 8 Pages: 083019-083019
  • DOI: 10.1103/physrevd.102.083019
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Inflaton as the Affleck-Dine baryogenesis field in hilltop supernatural inflation (2020)
  • Author(s): Lin Chia-Min、Kohri Kazunori
  • Journal Title: Physical Review D Volume: 102 Issue: 4 Pages: 43511-43511
  • DOI: 10.1103/physrevd.102.043511
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] MeV-scale reheating temperature and cosmological production of light sterile neutrinos (2020)
  • Author(s): Hasegawa Takuya、Hiroshima Nagisa、Kohri Kazunori、Hansen Rasmus S.L.、Tram Thomas、Hannestad Steen
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2020 Issue: 08 Pages: 015-015
  • DOI: 10.1088/1475-7516/2020/08/015
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] CALET results after three years on the International Space Station (2020)
  • Author(s): Y. Asaoka et al
  • Journal Title: Journal of Physics: Conference Series Volume: 1468 Issue: 1 Pages: 012074-012074
  • DOI: 10.1088/1742-6596/1468/1/012074
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Cosmic microwave background bounds on primordial black holes including dark matter halo accretion (2020)
  • Author(s): Serpico Pasquale D.、Poulin Vivian、Inman Derek、Kohri Kazunori
  • Journal Title: Physical Review Research Volume: 2 Issue: 2 Pages: 23204-23204
  • DOI: 10.1103/physrevresearch.2.023204
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] LiteBIRD satellite: JAXA's new strategic L-class mission for all-sky surveys of cosmic microwave background polarization (2020)
  • Author(s): Hazumi Masashi、et al.
  • Journal Title: Proceedings of SPIE Volume: 11443 Pages: 249-249
  • DOI: 10.1117/12.2563050
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Concept design of low frequency telescope for CMB B-mode polarization satellite LiteBIRD (2020)
  • Author(s): Sekimoto Yutaro, et al.
  • Journal Title: Proceedings of SPIE Volume: 11453 Pages: 37-37
  • DOI: 10.1117/12.2561841
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Overview of the medium and high frequency telescopes of the LiteBIRD space mission (2020)
  • Author(s): Montier Ludovic、et al.
  • Journal Title: Proceedings of SPIE Volume: 11443 Pages: 250-250
  • DOI: 10.1117/12.2562243
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Testing the Seesaw Mechanism and Leptogenesis with Gravitational Waves (2020)
  • Author(s): Dror Jeff A.、Hiramatsu Takashi、Kohri Kazunori、Murayama Hitoshi、White Graham
  • Journal Title: Physical Review Letters Volume: 124 Issue: 4 Pages: 1-6
  • DOI: 10.1103/physrevlett.124.041804
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Clustering of primordial black holes formed in a matter-dominated epoch (2019)
  • Author(s): Takahiko Matsubara, Takahiro Terada, Kazunori Kohri, Shuichiro Yokoyama
  • Journal Title: Physical Review D Volume: 100 Issue: 12 Pages: 123544-123544
  • DOI: 10.1103/physrevd.100.123544
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] MeV-scale reheating temperature and thermalization of oscillating neutrinos by radiative and hadronic decays of massive particles (2019)
  • Author(s): Hasegawa Takuya、Hiroshima Nagisa、Kohri Kazunori、Hansen Rasmus S.L.、Tram Thomas、Hannestad Steen
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2019 Issue: 12 Pages: 012-012
  • DOI: 10.1088/1475-7516/2019/12/012
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Dependence of accessible dark matter annihilation cross sections on the density profiles of dwarf spheroidal galaxies with the Cherenkov Telescope Array (2019)
  • Author(s): Hiroshima Nagisa、Hayashida Masaaki、Kohri Kazunori
  • Journal Title: Physical Review D Volume: 99 Issue: 12 Pages: 123017-123017
  • DOI: 10.1103/physrevd.99.123017
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The CALorimetric Electron Telescope (CALET) on the International Space Station: Results from the First Two Years of Operation (2019)
  • Author(s): Asaoka Y、et al
  • Journal Title: EPJ Web of Conferences Volume: 208 Pages: 13001-13001
  • DOI: 10.1051/epjconf/201920813001
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Ultracompact minihalos associated with stellar-mass primordial black holes (2019)
  • Author(s): Nakama Tomohiro、Kohri Kazunori、Silk Joseph
  • Journal Title: Physical Review D Volume: 99 Issue: 12 Pages: 123530-123530
  • DOI: 10.1103/physrevd.99.123530
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Direct Measurement of the Cosmic-Ray Proton Spectrum from 50 GeV to 10 TeV with the Calorimetric Electron Telescope on the International Space Station (2019)
  • Author(s): O,Adriani, Y.Asaoka, M.Mori, S.Torii et al. (CALET Collaboration)
  • Journal Title: Physical Review Letters Volume: 122 Issue: 18 Pages: 181102-181102
  • DOI: 10.1103/physrevlett.122.181102
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Enhancement of gravitational waves induced by scalar perturbations due to a sudden transition from an early matter era to the radiation era (2019)
  • Author(s): Inomata Keisuke、Kohri Kazunori、Nakama Tomohiro、Terada Takahiro
  • Journal Title: Physical Review D Volume: 100 Issue: 4 Pages: 043532-043532
  • DOI: 10.1103/physrevd.100.043532
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Gravitational waves induced by scalar perturbations during a gradual transition from an early matter era to the radiation era (2019)
  • Author(s): Inomata Keisuke、Kohri Kazunori、Nakama Tomohiro、Terada Takahiro
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2019 Issue: 10 Pages: 071-071
  • DOI: 10.1088/1475-7516/2019/10/071
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Prospective constraints on the primordial black hole abundance from the stochastic gravitational-wave backgrounds produced by coalescing events and curvature perturbations (2019)
  • Author(s): Wang Sai、Terada Takahiro、Kohri Kazunori
  • Journal Title: Physical Review D Volume: 99 Issue: 10 Pages: 103531-103531
  • DOI: 10.1103/physrevd.99.103531
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The CALorimetric Electron Telescope (CALET) on the International Space Station: Results from the First Two Years (2019)
  • Author(s): Y Asaoka et al. (CALET Collaboration)
  • Journal Title: Journal of Physics: Conf. Series (26th Extended European Cosmic Ray Symposium) Volume: 1181 Pages: 012003-012003
  • DOI: 10.1088/1742-6596/1181/1/012003
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Cosmological accretion on to the primordial black hole + CDM halo system (2020)
  • Author(s): Kazunori Kohri
  • Organizer: 天体形成研究会2020 Online, 筑波大宇宙物理理論研究室
  • Invited
• [Presentation] Primordial black holes and stochastic gravitational wave background reported by NANOGrav 12.5yr (2020)
  • Author(s): Kazunori Kohri
  • Organizer: AAPPS-DACG Workshop on Astrophysics, Cosmology and Gravitation Online
  • Int'l Joint Research
• [Presentation] Primordial black holes and stochastic gravitational wave background reported by NANOGrav 12.5yr (2020)
  • Author(s): Kazunori Kohri
  • Organizer: JGRG 2020 Online
  • Int'l Joint Research
• [Presentation] Solar-Mass Primordial Black Holes Explain NANOGrav Hint of Gravitational Waves (2020)
  • Author(s): Kazunori Kohri
  • Organizer: The 26th KAGRA Face-to-Face meeting in remote style, Session 02 / 13:30-14:30 JST/ Plenary / Contribution talks, Academia Sinica, Taiwan
  • Int'l Joint Research
• [Presentation] Formations of primordial black holes in the early matter-dominated Universe (2020)
  • Author(s): Kazunori Kohri
  • Organizer: Cosmology Seminar Online, Helsinki University
  • Int'l Joint Research / Invited
• [Presentation] Series: What is the spacetime of the Universe? 1st: Cosmology online (2020)
  • Author(s): 郡和範
  • Organizer: 朝日カルチャーセンター藤沢
  • Invited
• [Presentation] Series: What is the spacetime of the Universe?, ``2nd: Inflation online (2020)
  • Author(s): 郡和範
  • Organizer: 朝日カルチャーセンター藤沢
  • Invited
• [Presentation] KAGRA, ``4th: Gravitational wave from the early Universe (2020)
  • Author(s): 郡和範
  • Organizer: 朝日カルチャーセンター新宿
  • Invited
• [Presentation] What is the spacetime of the Universe?, ``3rd: ``Carrying out research examining the past, present, and future of the Universe (2020)
  • Author(s): 郡和範
  • Organizer: 朝日カルチャーセンター藤沢
  • Invited
• [Presentation] 初期宇宙からの重力波とDECIGO (2020)
  • Author(s): 郡和範
  • Organizer: 第19回DECIGOワークショップ Online
  • Invited
• [Presentation] 原始ブラックホール (2020)
  • Author(s): 郡和範
  • Organizer: 素粒子現象論研究会 2020、大阪市大、大阪
  • Invited
• [Presentation] KAGRAと基礎物理 (2020)
  • Author(s): 郡和範
  • Organizer: KEK 研究推進会議 KAGRA, KEKつくば、つくば市
  • Invited
• [Presentation] MeV-scale reheating temperature and neutrino oscillation in the early Universe (2020)
  • Author(s): 郡和範
  • Organizer: 新学術領域「ニュートリノで拓く素粒子と宇宙」2020 Online
• [Presentation] Curvaton and the Moduli problem in supergravity (2020)
  • Author(s): 郡和範
  • Organizer: KEK CMBグループ年始発表会 Online
  • Invited
• [Presentation] Series At the cutting edge of research on black holes , ``The Nobel Prize in Physics 2020: 1/2 (2020)
  • Author(s): 郡和範
  • Organizer: 朝日カルチャーセンター藤沢
  • Invited
• [Presentation] NANOGrav12.5yr hints of Gravitational Waves and Solar-Mass Primordial Black Holes (2020)
  • Author(s): 郡和範
  • Organizer: 新学術 重力波創世記 The Forth Annual Area Symposium Online
  • Int'l Joint Research
• [Presentation] Series: At the cutting edge of research on black holes , ``The Nobel Prize in Physics 2020: 2/2 (2020)
  • Author(s): 郡和範
  • Organizer: 朝日カルチャーセンター藤沢
  • Invited
• [Presentation] What is the spacetime of the Universe? (2020)
  • Author(s): 郡和範
  • Organizer: 渋谷区ハチコウ大学
  • Invited
• [Presentation] Clustering of Primordial Black Holes produced in the early Matter Dominated Universe (2020)
  • Author(s): Kazunori Kohri
  • Organizer: The area workshop ``Gravitational wave physics and astronomy: Genesis''
• [Presentation] Positron and antiproton excess in nonstandard astrophysics/cosmology (2020)
  • Author(s): Kazunori Kohri
  • Organizer: CALET TIM meeting
  • Invited
• [Presentation] Formations and evolutions of PBHs in the matter-dominated Universe (2020)
  • Author(s): Kazunori Kohri
  • Organizer: Motpeller Cosmology seminar
  • Int'l Joint Research / Invited
• [Presentation] Formations and clusterings of primordial black hole dark matter formed in the matter dominated Universe (2020)
  • Author(s): Kazunori Kohri
  • Organizer: Kavli IPMU Cosmic Accelereation Workshop
  • Int'l Joint Research
• [Presentation] Dark matter / aLIGO events / OGLE events / a seed of SMBHs for primordial black holes in the radiation/matter dominated Universe (2020)
  • Author(s): Kazunori Kohri
  • Organizer: The international KEK-PH 2020 meeting
  • Int'l Joint Research
• [Presentation] Primordial Black Hole Cosmology (2019)
  • Author(s): Kazunori Kohri
  • Organizer: The 40th Anniversary Symposium of the US-Japan Science and Technology Cooperation Program in High Energy Physics
  • Int'l Joint Research / Invited
• [Presentation] Primordial Black Hole Cosmology (2019)
  • Author(s): Kazunori Kohri
  • Organizer: KMI seminar
  • Int'l Joint Research / Invited
• [Presentation] Primordial Black Hole Cosmology I (2019)
  • Author(s): Kazunori Kohri
  • Organizer: KIAS cosmology lecture
  • Int'l Joint Research / Invited
• [Presentation] Primordial Black Hole Cosmology II (2019)
  • Author(s): Kazunori Kohri
  • Organizer: KIAS cosmology lecture
  • Int'l Joint Research / Invited
• [Presentation] Primordial Black Hole Cosmology III (2019)
  • Author(s): Kazunori Kohri
  • Organizer: KIAS cosmology lecture
  • Int'l Joint Research / Invited
• [Presentation] ダークマターの謎に迫る 第1回 ダークマターとは何か？ (2019)
  • Author(s): 郡和範
  • Organizer: 朝日カルチャーセンター湘南
• [Presentation] 宇宙の「未発見」に挑む 第4回 ダークマター研究の最前線 (2019)
  • Author(s): 郡和範
  • Organizer: 朝日カルチャーセンター横浜
  • Invited
• [Presentation] Late-time entropy production and neutrino oscillation in the early Universe (2019)
  • Author(s): 郡和範
  • Organizer: 新学術領域研究「ニュートリノで拓く素粒子と宇宙」
  • Invited
• [Presentation] ダークマター候補: PBH、axion、WIMPの問題点 (2019)
  • Author(s): 郡和範
  • Organizer: ダークマターの懇談会2019
  • Invited
• [Presentation] 全国同時七夕講演会つくば 「最新の電波観測で宇宙のナゾをとく！」 [ お話その1 「ブラックホールは見えるか？」 (2019)
  • Author(s): 郡和範
  • Organizer: つくばエキスポセンター
  • Invited
• [Presentation] Neutrino oscillation in the early Universe (2019)
  • Author(s): 郡和範
  • Organizer: 国立天文台 科学研究部 COSNAP seminar
  • Invited
• [Presentation] つくばちびっ子博士2019「加速器ってなに？ 加速器科学の不思議を知ろう！」[ Bコース ``宇宙がむかし小さかった頃とブラックホールの意外な関係'' (2019)
  • Author(s): 郡和範
  • Organizer: KEKつくば
  • Invited
• [Presentation] DM annihilation <σv> and density profiles of dSphs with CTA (2019)
  • Author(s): Kazunori Kohri
  • Organizer: COSMO19
• [Presentation] Inflation models and future CMB B-mode observations (2019)
  • Author(s): Kazunori Kohri
  • Organizer: International conference TAUP2019
  • Int'l Joint Research / Invited
• [Presentation] 招待講演 ``はじめに'' (2019)
  • Author(s): 郡和範
  • Organizer: ２０１９年物理学会秋の分科会 シンポジウム「原始ブラックホール」
  • Invited
• [Presentation] 集中講義 ``素粒子的宇宙論入門'' (2019)
  • Author(s): 郡和範
  • Organizer: 京都大学理学部 物理第二教室 素粒子論研究室
  • Invited
• [Presentation] 教室談話会 ``Neutrino oscillation in the early Universe'' (2019)
  • Author(s): 郡和範
  • Organizer: 京都大学理学部 物理第二教室
  • Invited
• [Presentation] Primordial Black Holes (2019)
  • Author(s): Kazunori Kohri
  • Organizer: 京都大学理学部 物理第二教室 素粒子論研究室
  • Invited
• [Presentation] 消えた反物質を探せ 第1回 宇宙のはじまりと反物質 (2019)
  • Author(s): 郡和範
  • Organizer: 朝日カルチャーセンター新宿
  • Invited
• [Presentation] 元素はどのように生まれてきたのか？ 第1回 宇宙の始まりのビッグバン元素合成 (2019)
  • Author(s): 郡和範
  • Organizer: 朝日カルチャーセンター湘南
  • Invited
• [Presentation] Primordial Black Hole dark matter and future gamma-ray observations (2019)
  • Author(s): Kazunori Kohri
  • Organizer: CTA annual meeting The extreme Universe viewed in very-high-energy gamma-rays 2019
  • Int'l Joint Research / Invited
• [Presentation] Primordial Black Hole Cosmology in the Matter-Dominated Universe (2019)
  • Author(s): Kazunori Kohri
  • Organizer: APPC 2019 14TH ASIA-PACIFIC PHYSICS CONFERENCE
  • Int'l Joint Research / Invited
• [Presentation] Primordial Black Hole Cosmology (2019)
  • Author(s): Kazunori Kohri
  • Organizer: Academia Sinica seminar
  • Int'l Joint Research / Invited
• [Presentation] Axion-Like Particles with the Cosmicff IR and GeV-TeV Gamma-rayffobservations (2019)
  • Author(s): Kazunori Kohri
  • Organizer: LeCOSPA National Taiwan University
  • Int'l Joint Research / Invited
• [Presentation] Netrino oscillation in the early Universe (2019)
  • Author(s): Kazunori Kohri
  • Organizer: Particle Theory Seminar
  • Int'l Joint Research / Invited
• [Presentation] Formations and evolutions of PBHs in the matter-dominated Universe (2019)
  • Author(s): Kazunori Kohri
  • Organizer: Focus Week on Primordial Black Holes
  • Int'l Joint Research / Invited
• [Presentation] Dark matter models and observations of cosmic-ray electron and positron (2019)
  • Author(s): Kazunori Kohri
  • Organizer: CALET Staus Report
  • Invited
• [Presentation] Neutrino oscillation in the early Universe (2019)
  • Author(s): Kazunori Kohri
  • Organizer: LiteBIRD Staus Report
  • Int'l Joint Research
• [Presentation] Cosmological tests of Fundamental Physics (2019)
  • Author(s): Kazunori Kohri
  • Organizer: 2019 Joint Workshop of FKPPL and TYL/FJPPL
  • Int'l Joint Research
• [Book] 「ニュートリノと重力波」のことが一冊でまるごとわかる (2021)
  • Author(s): 郡 和範
  • Total Pages: 274
  • Publisher: ベレ出版
  • ISBN: 9784860646493
• [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 他
  • Total Pages: 912
  • Publisher: 朝倉書店
  • ISBN: 9784254131277
• [Book] 相対論と宇宙の事典 (2020)
  • Author(s): 安東正樹、白水徹也、浅田秀樹、石橋明浩、小林努、真貝寿明、早田次郎、谷口敬介 他
  • Total Pages: 432
  • Publisher: 朝倉書店
  • ISBN: 9784254131284
• [Remarks] KEK-Cosmo on "Dark Matter"
  • URL: https://conference-indico.kek.jp/event/117/timetable/#day-2020-10-13
• [Remarks] KEK-Cosmo on "Gravitational Wave"
  • URL: https://conference-indico.kek.jp/event/117/timetable/#day-2020-11-04
• [Remarks] 第25回日本物理学会論文賞
  • URL: https://www.jps.or.jp/activities/awards/ronbunsyo/ronbun25-2020.php
• [Remarks] プレスリリース (なぜ物質は完全消滅を免れたのか？ -重力波で探る物質の起源-)
  • URL: https://www2.kek.jp/ipns/ja/release/20200204/
• [Funded Workshop] 3rd KEK-PH + KEK-Cosmo Joint Lectures and Workshop on "Dark Matter" (2020)
• [Funded Workshop] 4th KEK-PH + KEK-Cosmo Joint Lectures and Workshop on "Gravitational Wave" (2020)
• [Funded Workshop] KEK-Cosmo-2020 (2020)