Theoretical studies to discover primordial black holes

• Project Area: Gravitational wave physics and astronomy: Genesis
• Project/Area Number: 18H04594
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• 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): 2018-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 原始ブラックホール / PBH / インフレーション / 重力波 / 重力レンズ / CMB / ビッグバン元素合成 / 21cm線 / ブラックホール / ダークマター / パルサータイミング / 宇宙論

Outline of Annual Research Achievements

PBHのレビュー論文 (Carr, et al, arXiv:2002.12778)を発表した。この論文により10の9乗グラムから10の17乗太陽質量までのPBHの存在量について観測からの上限値を報告した。Serpico, et al, arXiv:2002.10771において、PBHはその外にコールドダークマター(CDM)のハローを必然的に持ち、その系に宇宙のバリオンが宇宙論的に降着することを初めて指摘した。Planck衛星による宇宙マイクロ波背景放射の偏光観測を用いると、その降着円盤から放射される光を制限することになり、10の3乗倍から10の4乗倍の太陽質量の重さを持つPBHの存在量に、CDMの量の１億倍以下という厳しい制限が得られた。Matsubara, et al, arXiv:1909.04053において、宇宙初期にPBHのクラスタリングの問題を検討した。観測から示唆されるように、大スケールの非ガウス性が無視できるほど小さい時は、そのクラスタリングも無視できるほど小さいことが明快に示された。Inomata, et al,2019 (arXiv:1904.12879とarXiv:1904.12878)により、PBHを作る小スケールの宇宙初期の密度ゆらぎ(曲率ゆらぎ)が必然的に２次的な原始重力波を作り出すシナリオにおいて、宇宙初期の物質優勢から放射優勢への移行が、標準的な指数関数的な移行より速いメカニズムで進む場合は、２次的重力波が多く作られ、将来観測で検出可能であることを指摘した。Nakama, et al, arXiv:1905.04477により、PBHを生成する小スケールの曲率ゆらぎが存在する場合、同時にCDMによるUltra-Compact-Mini-Halo (UCMH)が作られることが示され、それを将来のパルサータイミング観測で検出できる可能性を指摘した。

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

Research Products

• [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)
• [Int'l Joint Research] Barcelona U/Madrid U(スペイン)
• [Int'l Joint Research] U of Oxford(英国)
• [Int'l Joint Research] Johns Hopkins University(米国)
• [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
• [Journal Article] Effect of inhomogeneity on primordial black hole formation in the matter dominated era (2018)
  • Author(s): Kokubu Takafumi、Kyutoku Koutarou、Kohri Kazunori、Harada Tomohiro
  • Journal Title: Physical Review D Volume: 98 Issue: 12 Pages: 1-1
  • DOI: 10.1103/physrevd.98.123024
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Concept Study of Optical Configurations for High-Frequency Telescope for LiteBIRD (2018)
  • Author(s): Hasebe T. et al. Tsujimoto, M. et al.
  • Journal Title: Journal of Low Temperature Physics Volume: 193 Issue: 5-6 Pages: 841-850
  • DOI: 10.1007/s10909-018-1915-2
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Characteristics and Performance of the CALorimetric Electron Telescope (CALET) Calorimeter for Gamma-Ray Observations (2018)
  • 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
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Search for GeV Gamma-Ray Counterparts of Gravitational Wave Events by CALET (2018)
  • 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
  • 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 Station (2018)
  • 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
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Primordial black hole abundance from random Gaussian curvature perturbations and a local density threshold (2018)
  • Author(s): Chul-Moon Yoo Tomohiro Harada Jaume Garriga Kazunori Kohri
  • Journal Title: Progress of Theoretical and Experimental Physics Volume: 120 Issue: 12 Pages: 1-1
  • DOI: 10.1093/ptep/pty120
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Semianalytic calculation of gravitational wave spectrum nonlinearly induced from primordial curvature perturbations (2018)
  • Author(s): Kohri Kazunori、Terada Takahiro
  • Journal Title: Physical Review D Volume: 97 Issue: 12 Pages: 1-1
  • DOI: 10.1103/physrevd.97.123532
  • Peer Reviewed / Open Access
• [Journal Article] Primordial black hole dark matter and LIGO/Virgo merger rate from inflation with running spectral indices: formation in the matter- and/or radiation-dominated universe (2018)
  • Author(s): Kohri Kazunori、Terada Takahiro
  • Journal Title: Classical and Quantum Gravity Volume: 35 Issue: 23 Pages: 235017-235017
  • DOI: 10.1088/1361-6382/aaea18
  • Peer Reviewed / Open Access
• [Journal Article] Slow-roll corrections in multi-field inflation: a separate universes approach (2018)
  • Author(s): Kariauskas Mindaugas、Kohri Kazunori、Mori Taro、White Jonathan
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2018 Issue: 05 Pages: 021-021
  • DOI: 10.1088/1475-7516/2018/05/021
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The LiteBIRD Satellite Mission: Sub-Kelvin Instrument (2018)
  • Author(s): Suzuki A. et al. Tsujimoto, M. et al.
  • Journal Title: Journal of Low Temperature Physics Volume: 193 Issue: 5-6 Pages: 1048-1056
  • DOI: 10.1007/s10909-018-1947-7
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Electroweak vacuum collapse induced by vacuum fluctuations of the Higgs field around evaporating black holes (2018)
  • Author(s): Kohri Kazunori、Matsui Hiroki
  • Journal Title: Physical Review D Volume: 98 Issue: 12 Pages: 123509-123509
  • DOI: 10.1103/physrevd.98.123509
  • Peer Reviewed / Open Access
• [Journal Article] Electroweak vacuum instability and renormalized vacuum field fluctuations in Friedmann-Lemaitre-Robertson-Walker background (2018)
  • Author(s): Kohri Kazunori、Matsui Hiroki
  • Journal Title: Physical Review D Volume: 98 Issue: 10 Pages: 103521-103521
  • DOI: 10.1103/physrevd.98.103521
  • Peer Reviewed / Open Access
• [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
  • Invited
• [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」
• [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
  • Invited
• [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
• [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] 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] 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] Cosmological tests of Fundamental Physic (2019)
  • Author(s): Kazunori Kohri
  • Organizer: 2019 Joint Workshop of FKPPL and TYL/FJPPL
  • Int'l Joint Research
• [Presentation] Primordial Black Hole Cosmolog (2019)
  • Author(s): Kazunori Kohri
  • Organizer: Cosmology seminar in Austraria's National University Australia
  • Int'l Joint Research / Invited
• [Presentation] Primordial Black Hole in the Matter Dominated Universe (2019)
  • Author(s): Kazunori Kohri
  • Organizer: Workshop Innovative Area "Accelerating Universe" YITP Kyoto
  • Int'l Joint Research
• [Presentation] Invited Talk "Search for Dark Matter with CTA" (2019)
  • Author(s): Kazunori Kohri
  • Organizer: Symposium "CTA" JPS meeing in Kyushu U Fukuoka Japan
  • Invited
• [Presentation] Future 21cm line observations and new Phys./Astro (2019)
  • Author(s): Kazunori Kohri
  • Organizer: Kiban A "21cm line" meeting
• [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 Honolulu Hawaii USA
  • Int'l Joint Research
• [Presentation] Primordial Black Hole Cosmology (2019)
  • Author(s): Kazunori Kohri
  • Organizer: KMI seminar Nagoya U Nagoya Japan
  • Int'l Joint Research / Invited
• [Presentation] Cosmological tests of Fundamental Physics (2019)
  • Author(s): Kazunori Kohri
  • Organizer: TYL-FJPPL Meeting Jeju Korea
  • Int'l Joint Research / Invited
• [Presentation] Primordial Black Hole Cosmology (2019)
  • Author(s): Kazunori Kohri
  • Organizer: KIAS Particle Physics Lecture Course Seoul Korea
  • Int'l Joint Research / Invited
• [Presentation] 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ダークマターの謎に迫る
  • Invited
• [Presentation] 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宇宙の「未発見」に挑む
  • Invited
• [Presentation] Axion-Like Particles and Recent Observations of the Cosmic Infrared Background Radiation (2018)
  • Author(s): Kazunori Kohri
  • Organizer: Lancaster Cosmology seminar
  • Int'l Joint Research / Invited
• [Presentation] Introduction of Primordial Black Hole (2018)
  • Author(s): Kazunori Kohri
  • Organizer: BIPAC gravity seminar U of Oxford
  • Int'l Joint Research / Invited
• [Presentation] Primordial Black Hole Cosmology (2018)
  • Author(s): Kazunori Kohri
  • Organizer: Hertfordshire University Astrophysics seminar UK
  • Int'l Joint Research / Invited
• [Presentation] Primordial Black Holes in Matter Dominated Universe (2018)
  • Author(s): Kazunori Kohri
  • Organizer: Cosmo-2018 Dejeon Korea
  • Int'l Joint Research
• [Presentation] Primordial Black Hole Cosmology (2018)
  • Author(s): Kazunori Kohri
  • Organizer: Workshop "Planck-Scale Physics" Matsumoto
• [Presentation] Axion-Like Particles and dark matter in terms of CTA (2018)
  • Author(s): Kazunori Kohri
  • Organizer: CTA international meeing LaPalma Spain
  • Int'l Joint Research / Invited
• [Presentation] Cosmological accretions on Primordial Black Holes (2018)
  • Author(s): Kazunori Kohri
  • Organizer: U of Tsukuba Astrophysics workshop
  • Invited
• [Presentation] Cosmic-ray observations and particle physics (2018)
  • Author(s): Kazunori Kohri
  • Organizer: ICRR U. of Tokyo CTA Group seminar
  • Int'l Joint Research / Invited
• [Presentation] Primordial Black Hole Cosmology (2018)
  • Author(s): Kazunori Kohri
  • Organizer: Shinshu University Particle Physics Seminar Matsumoto
  • Invited
• [Presentation] Primordial Black Hole Cosmology (2018)
  • Author(s): Kazunori Kohri
  • Organizer: Innovative Area Meeting "Gravitational Wave Physics and Astronomy: Genesis" YITP Kyotu U
  • Int'l Joint Research
• [Presentation] Invited talk "Primordial Black Hole Cosmology Part I" (2018)
  • Author(s): Kazunori Kohri
  • Organizer: Yonsei University Korea
  • Int'l Joint Research / Invited
• [Presentation] Invited talk "Primordial Black Hole Cosmology Part II" (2018)
  • Author(s): Kazunori Kohri
  • Organizer: Yonsei University Korea
  • Int'l Joint Research / Invited
• [Presentation] Invited talk "Formation of primordial black holes and inflationary universe" (2018)
  • Author(s): Kazunori Kohri
  • Organizer: Maeda Group Seminar Waseda University Tokyo
  • Invited
• [Presentation] 第4回原始ブラックホール (2018)
  • Author(s): 郡和範
  • Organizer: 朝日カルチャーセンター湘南ブラックホールとは何か重力波と宇宙誕生の秘密
  • Invited
• [Presentation] 宇宙、物質の起源と人類 ダークマターとダークエネルギーの果たす役割 (2018)
  • Author(s): 郡和範
  • Organizer: 総研大創立３０周年記念シンポジウム人類はどこへ向かうのか～好奇心と社会倫理～
  • Invited
• [Presentation] ダークマターとは何か？ ー はじめに ー (2018)
  • Author(s): 郡和範
  • Organizer: Dark Matter Day（暗黒物質の日）at KEK Facebook Live
  • Invited
• [Presentation] ダークマターとは何か？ ー はじめに ー (2018)
  • Author(s): 郡和範
  • Organizer: KEKサイエンスカフェ at BiVi Tsukuba 2F
  • Invited
• [Presentation] 第3回 反物質の性質が宇宙誕生の謎を解く (2018)
  • Author(s): 郡和範
  • Organizer: 朝日カルチャーセンター湘南 宇宙誕生の謎を解く 消えた反物質を探せ！
  • Invited
• [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、石橋明浩、小林努、真貝寿明、早田次郎、谷口敬介, 他
  • Total Pages: 448
  • Publisher: 朝倉書店
  • ISBN: 9784254131284
• [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/
• [Remarks] KEK-Cosmo 2019, Primordial Black Hole
  • URL: http://research.kek.jp/people/kohri/KEKCosmo2019.htm
• [Funded Workshop] KEK-Cosmo-2020 (2020)
• [Funded Workshop] International KEK-Cosmo and APCosPA Winter School 2019, Primordial Black Hole (2019)