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2018 Fiscal Year Annual Research Report

New astrophysical researches by future 21cm line observations

Research Project

Project/Area Number 17H01131
Research InstitutionHigh 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)

Co-Investigator(Kenkyū-buntansha) 久徳 浩太郎  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, 助教 (30757125)
川崎 雅裕  東京大学, 宇宙線研究所, 教授 (50202031)
高橋 龍一  弘前大学, 理工学研究科, 助教 (60413960)
高橋 智  佐賀大学, 理工学部, 准教授 (60432960)
Project Period (FY) 2017-04-01 – 2021-03-31
Keywords21cm線 / ニュートリノ / 重力波 / バリオン数 / 大規模構造 / インフレーション / 前傾放射除去 / SKA
Outline of Annual Research Achievements

郡は,原始ブラックホールを作るための種となる,インフレーションなどにより生成された可能性のある小スケールでの大きな曲率ゆらぎが2次的につくる背景重力波を調べた.将来のSKAによるパルサータイミングの観測により,そうした小スケールでの曲率ゆらぎが制限できる可能性を指摘した.高橋(智)は,EDGESによる21cm線グローバルシグナルの観測から初期密度揺らぎパワースペクトルのランニングに対してどのような制限が得られるか解析を行い,21cm線グローバルシグナルが初期密度揺らぎの検証にも有用であることを示した. 高橋(龍)は,宇宙密度ゆらぎのバイスペクトルの共分散行列を,多数(4千個)のN体数値シミュレーションを用いて求めた.川崎は,宇宙初期に大きなバリオン等曲率密度揺らぎが存在すると揺らぎの2次の効果によって重水素の存在比が変わることに着目して,最新の精密な観測を用いて幅広い波数の揺らぎの大きさに対して制限が得られることを明らかにした.久徳は,2017年に発見された連星中性子星合体からの多粒子放射の理論解釈を進めた.キロノヴァAT 2017gfoの偏光が小さかったことが理論モデルと整合的であることをシミュレーションで確認し,さらに今後偏光が検出される場合もありうることを示した.高橋(慶)は,ライマンアルファ銀河やマイクロ波宇宙背景放射と21cm線との相互相関により,前景放射の影響を軽減する手法を開拓した.前者については数値シミュレーションのデータを使って観測誤差の評価や前景放射の影響を調べ,現行の電波望遠鏡MWAや将来計画であるSKAでの観測可能性を議論した.また,後者についてはMWAとPlanckの実際の観測データを用いて相互相関に上限を与えた.また,EDGESのグローバルシグナルの観測データを使った原始揺らぎのパワースペクトルへの制限を評価した.

Current Status of Research Progress
Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

我々のメンバーは,頻繁に様々な研究会に出席するなどして,お互いに会った際にメンバー間での議論を活発に行ってきた.例えば,私が2019年3月20日にKEKつくばで主催したメンバー間の情報共有を目的とした研究会「宇宙論的21cm線」では,最新の宇宙論的21cm線の理論と観測の情報交換が行われた.こうした活発な議論がお互いを刺激し,バラエティー豊かな研究が行われ,多数の査読付き投稿論文を生み出したと理解している.そのため,当初の計画以上に進展した結果となった.

Strategy for Future Research Activity

郡は,将来の21cm線観測を用いて,対消滅するダークマターや,超巨大ブラックホールをつくる過程でバリオン物質の降着に起因する21cm線放射の検出可能性を検討する.高橋(智)は,引き続き,21cm線グロバールシグナルから宇宙論のどのような側面が探れるか検討する.さらに,21cm線の揺らぎの情報も用いた際,グローバルシグナルとどのような相補性があるかついても研究を進める.高橋(龍) は,宇宙の小スケールの密度ゆらぎの様子をN体シミュレーションから求め,暗黒物質の対消滅量の評価に用いる.この際,バリオン物理の影響も考慮した銀河形成シミュレーションを用いる.N体計算を用いて,幅広いの宇宙モデルや赤方偏移に使えるバイスベクトルのフィッティング関数を作成する.川崎は,大きな短波長曲率揺らぎから生成される原始ブラックホールに関して,ブラックホールの質量分布を調べ重力波観測や宇宙背景放射等の観測から曲率揺らぎやその背後にある素粒子モデルに対する知見を得る.久徳は,今後発見されるであろうブラックホール・中性子星連星合体からの多粒子放射を,特に質量が同程度の連星中性子星との識別可能性に着目して理論的に精緻化する.また,重力波を用いた今後の基礎物理探査を21cm線など他の観測との協同にも着目して検討する.高橋(慶)は,引き続き,宇宙再電離21cm線に関してMWAとの共同研究を進める.そのために大学院生をメルボルン大学に派遣して観測データの取得やデータ解析の習得を図るとともに,相互相関解析のためのソフトウェアを開発する.MWA phase 2データとすばるHSCのライマンアルファ銀河サーベイのデータを用いて,それらの相互相関を解析し,上限をつけることを目標とする.また,MWAデータの自己相関についてはパワースペクトルだけでなくバイスペクトルや1点関数など,多様な統計量についての解析を行う.

  • Research Products

    (105 results)

All 2019 2018 Other

All Int'l Joint Research (6 results) Journal Article (40 results) (of which Int'l Joint Research: 21 results,  Peer Reviewed: 38 results,  Open Access: 38 results) Presentation (53 results) (of which Int'l Joint Research: 30 results,  Invited: 32 results) Book (1 results) Remarks (4 results) Funded Workshop (1 results)

  • [Int'l Joint Research] オックスフォード大学/ランカスター大学/シェフィールド大学(英国)

    • Country Name
      UNITED KINGDOM
    • Counterpart Institution
      オックスフォード大学/ランカスター大学/シェフィールド大学
    • # of Other Institutions
      3
  • [Int'l Joint Research] ハーバード大学/南カリフォルニア大学/ペンシルバニア州立大学(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      ハーバード大学/南カリフォルニア大学/ペンシルバニア州立大学
    • # of Other Institutions
      7
  • [Int'l Joint Research] ストックホルム大学(スウェーデン)

    • Country Name
      SWEDEN
    • Counterpart Institution
      ストックホルム大学
  • [Int'l Joint Research] イタリア国立天文台(イタリア)

    • Country Name
      ITALY
    • Counterpart Institution
      イタリア国立天文台
  • [Int'l Joint Research] ヨーロッパ南天文台/マックスプランク重力研究所(ドイツ)

    • Country Name
      GERMANY
    • Counterpart Institution
      ヨーロッパ南天文台/マックスプランク重力研究所
  • [Int'l Joint Research]

    • # of Other Countries
      3
  • [Journal Article] The CALorimetric Electron Telescope (CALET) on the International Space Station: Results from the First Two Years On Orbit2019

    • Author(s)
      Asaoka Y、et al
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 1181 Pages: 012003~012003

    • DOI

      10.1088/1742-6596/1181/1/012003

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Probing primordial non-Gaussianity with 21 cm fluctuations from minihalos2019

    • Author(s)
      Sekiguchi Toyokazu、Takahashi Tomo、Tashiro Hiroyuki、Yokoyama Shuichiro
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2019 Pages: 033~033

    • DOI

      10.1088/1475-7516/2019/02/033

    • Peer Reviewed / Open Access
  • [Journal Article] Impact of nonlinear growth of the large-scale structure on CMB B-mode delensing2019

    • Author(s)
      Namikawa Toshiya、Takahashi Ryuichi
    • Journal Title

      Physical Review D

      Volume: 99 Pages: 023530

    • DOI

      10.1103/PhysRevD.99.023530

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] CMB lensing bispectrum: Assessing analytical predictions against full-sky lensing simulations2019

    • Author(s)
      Namikawa Toshiya、Bose Benjamin、Bouchet Fran?ois R.、Takahashi Ryuichi、Taruya Atsushi
    • Journal Title

      Physical Review D

      Volume: 99 Pages: 063511

    • DOI

      10.1103/PhysRevD.99.063511

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Primordial black holes from Affleck-Dine mechanism2019

    • Author(s)
      Hasegawa Fuminori、Kawasaki Masahiro
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2019 Pages: 027~027

    • DOI

      10.1088/1475-7516/2019/01/027

    • Peer Reviewed / Open Access
  • [Journal Article] Systematic effects from black hole-neutron star waveform model uncertainties on the neutron star equation of state2019

    • Author(s)
      Chakravarti Kabir、Gupta Anuradha、Bose Sukanta、Duez Matthew D.、Caro Jesus、Brege Wyatt、Foucart Francois、Ghosh Shaon、Kyutoku Koutarou、Lackey Benjamin D.、Shibata Masaru、Hemberger Daniel A.、Kidder Lawrence E.、Pfeiffer Harald P.、Scheel Mark A.
    • Journal Title

      Physical Review D

      Volume: 99 Pages: 024049

    • DOI

      10.1103/PhysRevD.99.024049

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The intergalactic magnetic field probed by a giant radio galaxy2019

    • Author(s)
      O’Sullivan S. P. et al.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 622 Pages: A16~A16

    • DOI

      10.1051/0004-6361/201833832

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of inhomogeneity on primordial black hole formation in the matter dominated era2018

    • Author(s)
      Kokubu Takafumi、Kyutoku Koutarou、Kohri Kazunori、Harada Tomohiro
    • Journal Title

      Physical Review D

      Volume: 98 Pages: 123024

    • 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 LiteBIRD2018

    • Author(s)
      Hasebe T. et al.
    • Journal Title

      Journal of Low Temperature Physics

      Volume: 193 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 Observations2018

    • Author(s)
      Cannady N. et al
    • Journal Title

      The Astrophysical Journal Supplement Series

      Volume: 238 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 CALET2018

    • Author(s)
      Adriani O., CALET Collaboration
    • Journal Title

      The Astrophysical Journal

      Volume: 863 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 Station2018

    • Author(s)
      Adriani O. et al., CALET Collaboration
    • Journal Title

      Physical Review Letters

      Volume: 120 Pages: 261102

    • DOI

      10.1103/PhysRevLett.120.261102

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] OUP accepted manuscript2018

    • Author(s)
      C.-M. Yoo, et al.
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 12 Pages: 123

    • 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 perturbations2018

    • Author(s)
      Kohri Kazunori、Terada Takahiro
    • Journal Title

      Physical Review D

      Volume: 97 Pages: 123532

    • 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 universe2018

    • Author(s)
      Kohri Kazunori、Terada Takahiro
    • Journal Title

      Classical and Quantum Gravity

      Volume: 35 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 approach2018

    • Author(s)
      Kar?iauskas Mindaugas、Kohri Kazunori、Mori Taro、White Jonathan
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2018 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 Instrument2018

    • Author(s)
      Suzuki A. et al.
    • Journal Title

      Journal of Low Temperature Physics

      Volume: 193 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 holes2018

    • Author(s)
      Kohri Kazunori、Matsui Hiroki
    • Journal Title

      Physical Review D

      Volume: 98 Pages: 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 background2018

    • Author(s)
      Kohri Kazunori、Matsui Hiroki
    • Journal Title

      Physical Review D

      Volume: 98 Pages: 103521

    • DOI

      10.1103/PhysRevD.98.103521

    • Peer Reviewed / Open Access
  • [Journal Article] Impact of EDGES 21-cm global signal on the primordial power spectrum2018

    • Author(s)
      Yoshiura Shintaro、Takahashi Keitaro、Takahashi Tomo
    • Journal Title

      Physical Review D

      Volume: 98 Pages: 063529

    • DOI

      10.1103/PhysRevD.98.063529

    • Peer Reviewed / Open Access
  • [Journal Article] Covariances for cosmic shear and galaxy?galaxy lensing in the response approach2018

    • Author(s)
      Takahashi Ryuichi、Nishimichi Takahiro、Takada Masahiro、Shirasaki Masato、Shiroyama Kosei
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 482 Pages: 4253~4277

    • DOI

      10.1093/mnras/sty2962

    • Peer Reviewed / Open Access
  • [Journal Article] Primordial black holes and the string swampland2018

    • Author(s)
      Kawasaki Masahiro、Takhistov Volodymyr
    • Journal Title

      Physical Review D

      Volume: 98 Pages: 123514

    • DOI

      10.1103/PhysRevD.98.123514

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Long-term dynamics of cosmological axion strings2018

    • Author(s)
      Kawasaki Masahiro、Sekiguchi Toyokazu、Yamaguchi Masahide、Yokoyama Jun’ichi
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2018 Pages: 091E01

    • DOI

      10.1093/ptep/pty098

    • Peer Reviewed / Open Access
  • [Journal Article] Big Bang nucleosynthesis constraint on baryonic isocurvature perturbations2018

    • Author(s)
      Inomata Keisuke、Kawasaki Masahiro、Kusenko Alexander、Yang Louis
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2018 Pages: 003~003

    • DOI

      10.1088/1475-7516/2018/12/003

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Formation of primordial black holes in an axionlike curvaton model2018

    • Author(s)
      Ando Kenta、Kawasaki Masahiro、Nakatsuka Hiromasa
    • Journal Title

      Physical Review D

      Volume: 98 Pages: 083508

    • DOI

      10.1103/PhysRevD.98.083508

    • Peer Reviewed / Open Access
  • [Journal Article] QCD axion dark matter from long-lived domain walls during matter domination2018

    • Author(s)
      Harigaya Keisuke、Kawasaki Masahiro
    • Journal Title

      Physics Letters B

      Volume: 782 Pages: 1~5

    • DOI

      10.1016/j.physletb.2018.04.056

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cosmologically allowed regions for the axion decay constant F a2018

    • Author(s)
      Kawasaki Masahiro、Sonomoto Eisuke、Yanagida Tsutomu T.
    • Journal Title

      Physics Letters B

      Volume: 782 Pages: 181~184

    • DOI

      10.1016/j.physletb.2018.05.014

    • Peer Reviewed / Open Access
  • [Journal Article] Prospects of the local Hubble parameter measurement using gravitational waves from double neutron stars2018

    • Author(s)
      Seto Naoki、Kyutoku Koutarou
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 475 Pages: 4133~4139

    • DOI

      10.1093/mnras/sty090

    • Peer Reviewed / Open Access
  • [Journal Article] Detectability of thermal neutrinos from binary neutron-star mergers and implications for neutrino physics2018

    • Author(s)
      Kyutoku Koutarou、Kashiyama Kazumi
    • Journal Title

      Physical Review D

      Volume: 97 Pages: 97.103001

    • DOI

      10.1103/PhysRevD.97.103001

    • Peer Reviewed / Open Access
  • [Journal Article] Global simulations of strongly magnetized remnant massive neutron stars formed in binary neutron star mergers2018

    • Author(s)
      Kiuchi Kenta、Kyutoku Koutarou、Sekiguchi Yuichiro、Shibata Masaru
    • Journal Title

      Physical Review D

      Volume: 97 Pages: 124039

    • DOI

      10.1103/PhysRevD.97.124039

    • Peer Reviewed / Open Access
  • [Journal Article] The origin of polarization in kilonovae and the case of the gravitational-wave counterpart AT 2017gfo2018

    • Author(s)
      Bulla M.、Covino S.、Kyutoku K.、Tanaka M.、Maund J. R.、Patat F.、Toma K.、Wiersema K.、Bruten J.、Jin Z. P.、Testa V.
    • Journal Title

      Nature Astronomy

      Volume: 3 Pages: 99~106

    • DOI

      10.1038/s41550-018-0593-y

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] How to detect the shortest period binary pulsars in the era of LISA2018

    • Author(s)
      Kyutoku Koutarou、Nishino Yuki、Seto Naoki
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 483 Pages: 2615~2620

    • DOI

      10.1093/mnras/sty3322

    • Peer Reviewed / Open Access
  • [Journal Article] Sensitivity of new detection method for ultra-low-frequency gravitational waves with pulsar spin-down rate statistics2018

    • Author(s)
      Yonemaru Naoyuki、Kumamoto Hiroki、Takahashi Keitaro、Kuroyanagi Sachiko
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 478 Pages: 1670~1676

    • DOI

      10.1093/mnras/sty976

    • Peer Reviewed / Open Access
  • [Journal Article] Detectability of 21?cm-signal during the Epoch of Reionization with 21?cm-Lyman-α emitter cross-correlation ? II. Foreground contamination2018

    • Author(s)
      Yoshiura S、Line J L B、Kubota K、Hasegawa K、Takahashi K
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 479 Pages: 2767~2776

    • DOI

      10.1093/mnras/sty1472

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Detectability of the 21-cm signal during the epoch of reionization with 21-cm Lyman α emitter cross-correlation ? I2018

    • Author(s)
      Kubota Kenji、Yoshiura Shintaro、Takahashi Keitaro、Hasegawa Kenji、Yajima Hidenobu、Ouchi Masami、Pindor B、Webster R L
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 479 Pages: 2754~2766

    • DOI

      10.1093/mnras/sty1471

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Optimum frequency of Faraday tomography to explore the intergalactic magnetic field in filaments of galaxies2018

    • Author(s)
      Akahori Takuya、Ideguchi Shinsuke、Aoki Takahiro、Takefuji Kazuhiro、Ujihara Hideki、Takahashi Keitaro
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Pages: R2

    • DOI

      10.1093/pasj/psy124

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Performance test of QU-fitting in cosmic magnetism study2018

    • Author(s)
      Miyashita Yoshimitsu、Ideguchi Shinsuke、Nakagawa Shouta、Akahori Takuya、Takahashi Keitaro
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 482 Pages: 2739~2749

    • DOI

      10.1093/mnras/sty2862

    • Peer Reviewed / Open Access
  • [Journal Article] Study of systematics effects on the cross power spectrum of 21?cm line and cosmic microwave background using Murchison Widefield Array data2018

    • Author(s)
      Yoshiura S、Ichiki K、Pindor B、Takahashi K、Tashiro H、Trott C M
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 483 Pages: 2697~2711

    • DOI

      10.1093/mnras/sty3248

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 連星中性子星合体からの重力波と多粒子天文学2018

    • Author(s)
      久徳浩太郎
    • Journal Title

      数理科学

      Volume: 12 Pages: 3

  • [Journal Article] 重力波でつくる重元素、重力波で探す重元素2018

    • Author(s)
      久徳浩太郎
    • Journal Title

      パリティ

      Volume: 12 Pages: 1

  • [Presentation] Primordial Black Hole Cosmolog2019

    • 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 Universe2019

    • 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
    • Int'l Joint Research / Invited
  • [Presentation] Future 21cm line observations and new Phys./Astro2019

    • Author(s)
      Kazunori Kohri
    • Organizer
      Kiban A "21cm line" meeting
  • [Presentation] Primordial Black Hole Cosmology2019

    • 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 Cosmology2019

    • Author(s)
      Kazunori Kohri
    • Organizer
      KMI seminar Nagoya U Nagoya Japan
    • Int'l Joint Research / Invited
  • [Presentation] Cosmological tests of Fundamental Physics2019

    • Author(s)
      Kazunori Kohri
    • Organizer
      TYL-FJPPL Meeting Jeju Korea
    • Int'l Joint Research / Invited
  • [Presentation] Primordial Black Hole Cosmology2019

    • 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] Multi-messenger from compact binary mergers2019

    • Author(s)
      Koutarou Kyutoku
    • Organizer
      The 10th International Workshop on Very High Energy Particle Astronomy in 2019
    • Int'l Joint Research / Invited
  • [Presentation] コンパクト連星合体からの質量放出2019

    • Author(s)
      久徳浩太郎
    • Organizer
      核データと重元素合成を中心とする宇宙核物理研究会
    • Invited
  • [Presentation] LISAを用いた最短周期連星パルサーの検出法2019

    • Author(s)
      久徳浩太郎
    • Organizer
      日本物理学会第74回年次大会
  • [Presentation] What did we learn about neutron-star properties from AT 2017gfo?2019

    • Author(s)
      Koutarou Kyutoku
    • Organizer
      Nucleosynthesis and electromagnetic counterparts to neutron star mergers: Preparation for the new discovery
    • Int'l Joint Research
  • [Presentation] 「Pulsar studies in SKA Japan」2019

    • Author(s)
      Keitaro Takahashi
    • Organizer
      Asia SKA Initiative On NS Meeting
    • Int'l Joint Research / Invited
  • [Presentation] 「Toward the Detection of Cosmological HI 21cm line Emission」2019

    • Author(s)
      Keitaro Takahashi
    • Organizer
      「加速宇宙」シンポジウム
    • Int'l Joint Research
  • [Presentation] 「Pulsar Timing Array」2019

    • Author(s)
      Keitaro Takahashi
    • Organizer
      RESCEU workshop on Space Gravitational Wave Detection
    • Int'l Joint Research / Invited
  • [Presentation] What can we learn from the 21cm global signal?2019

    • Author(s)
      Tomo Takahashi
    • Organizer
      The 2nd NRF-JSPS workshop in particle, physics, cosmology and gravitation
    • Int'l Joint Research
  • [Presentation] Probing the early Universe with 21cm line2019

    • Author(s)
      Tomo Takahashi
    • Organizer
      FAPESP-JSPS workshop on Dark Energy, Dark Matter and Galaxies
    • Int'l Joint Research
  • [Presentation] Gravitational lensing and black holes2019

    • Author(s)
      Ryuichi Takahashi
    • Organizer
      KEK-Cosmo and APCosPA Winter School 2019
    • Int'l Joint Research / Invited
  • [Presentation] A fitting formula of non-linear matter bispectrum for weak lensing surveys2019

    • Author(s)
      Ryuichi Takahashi
    • Organizer
      Accelerating Universe in the Dark
    • Int'l Joint Research
  • [Presentation] Axion Cosmology2019

    • Author(s)
      Masahiro Kawasaki
    • Organizer
      Revealing the history of the universe with underground particle and nuclear research 2019
    • Int'l Joint Research / Invited
  • [Presentation] Axion-Like Particles and Recent Observations of the Cosmic Infrared Background Radiation2018

    • Author(s)
      Kazunori Kohri
    • Organizer
      Lancaster Cosmology seminar
    • Int'l Joint Research / Invited
  • [Presentation] Introduction of Primordial Black Hole2018

    • Author(s)
      Kazunori Kohri
    • Organizer
      BIPAC gravity seminar U of Oxford
    • Int'l Joint Research / Invited
  • [Presentation] Primordial Black Hole Cosmology2018

    • Author(s)
      Kazunori Kohri
    • Organizer
      Hertfordshire University Astrophysics seminar UK
    • Int'l Joint Research / Invited
  • [Presentation] Primordial Black Holes in Matter Dominated Universe2018

    • Author(s)
      Kazunori Kohri
    • Organizer
      Cosmo-2018 Dejeon Korea
    • Int'l Joint Research
  • [Presentation] Primordial Black Hole Cosmology2018

    • Author(s)
      Kazunori Kohri
    • Organizer
      Workshop "Planck-Scale Physics" Matsumoto
  • [Presentation] Axion-Like Particles and dark matter in terms of CTA2018

    • Author(s)
      Kazunori Kohri
    • Organizer
      CTA international meeing LaPalma Spain
    • Int'l Joint Research / Invited
  • [Presentation] Cosmological accretions on Primordial Black Holes2018

    • Author(s)
      Kazunori Kohri
    • Organizer
      U of Tsukuba Astrophysics workshop
    • Invited
  • [Presentation] Cosmic-ray observations and particle physics2018

    • Author(s)
      Kazunori Kohri
    • Organizer
      ICRR U. of Tokyo CTA Group seminar
    • Int'l Joint Research
  • [Presentation] Primordial Black Hole Cosmology2018

    • Author(s)
      Kazunori Kohri
    • Organizer
      Shinshu University Particle Physics Seminar Matsumoto
    • Invited
  • [Presentation] Primordial Black Hole Cosmology2018

    • 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] Dark Matter Day(暗黒物質の日)at KEK Facebook Live2018

    • Author(s)
      郡和範
    • Organizer
      ダークマターとは何か? ー はじめに ー
    • Int'l Joint Research / Invited
  • [Presentation] KEKサイエンスカフェ at BiVi Tsukuba 2F2018

    • Author(s)
      郡和範
    • Organizer
      ダークマターとは何か? ー はじめに ー
    • 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
  • [Presentation] Electromagnetic counterparts to black hole-neutron star mergers after GW1708172018

    • Author(s)
      久徳浩太郎
    • Organizer
      Jet and Shock Breakouts in Cosmic Transients
  • [Presentation] Computation of high-accuracy gravitational waveforms from black hole-neutron star binary mergers2018

    • Author(s)
      久徳浩太郎
    • Organizer
      新学術領域「重力波物理学・天文学創世記」B班ワークショップ
  • [Presentation] GW170817の再解析2018

    • Author(s)
      久徳浩太郎
    • Organizer
      高エネルギー宇宙物理学研究会2018
  • [Presentation] Numerical-relativity simulations of binary-neutron-star mergeres and GW1708172018

    • Author(s)
      Koutarou Kyutoku
    • Organizer
      The Eighth East Asian Numerical Astrophysics Meeting
    • Int'l Joint Research / Invited
  • [Presentation] Gravitational waves from binary neutron stars2018

    • Author(s)
      Koutarou Kyutoku
    • Organizer
      Hadron structure and interaction in dense matter
    • Int'l Joint Research / Invited
  • [Presentation] 「次世代低周波電波望遠鏡Square Kilometre Array」2018

    • Author(s)
      高橋慶太郎
    • Organizer
      電子情報通信学会アンテナ・伝搬研究会
    • Invited
  • [Presentation] 「SKAとVLBIによるパルサー研究の未来」2018

    • Author(s)
      高橋慶太郎
    • Organizer
      VLBI懇談会シンポジウム
    • Invited
  • [Presentation] 「機械学習によるパルサーサーチ」2018

    • Author(s)
      高橋慶太郎
    • Organizer
      宇宙電波懇談会シンポジウム
  • [Presentation] Probing the early Universe: Perspectives from current and future cosmological observations2018

    • Author(s)
      高橋智
    • Organizer
      第7回観測論的宇宙論ワークショップ
    • Invited
  • [Presentation] Full-sky gravitational lensing simulation for large-area galaxy surveys and cosmic microwave background experiments2018

    • Author(s)
      高橋龍一
    • Organizer
      物理学会
  • [Presentation] Bispectrum covariance estimated from numerical simulations2018

    • Author(s)
      高橋龍一
    • Organizer
      天文学会
  • [Presentation] Bispectrum covariance estimated from numerical simulations2018

    • Author(s)
      高橋龍一
    • Organizer
      観測的宇宙論ワークショップ
  • [Presentation] Primordial black hole formation in inflation models and production of gravitational waves2018

    • Author(s)
      Masahiro Kawasaki
    • Organizer
      15th Marcel Grossmann Meeting
    • Int'l Joint Research
  • [Book] 重力波の源2018

    • Author(s)
      柴田 大、久徳 浩太郎
    • Total Pages
      224
    • Publisher
      朝倉書店
    • ISBN
      978-4-254-13801-6
  • [Remarks] International KEK-Cosmo

    • URL

      http://research.kek.jp/people/kohri/KEKCosmo2019.htm

  • [Remarks] International KEK-Cosmoの記事

    • URL

      https://www2.kek.jp/ipns/ja/post/2019/02/20190208/

  • [Remarks] 中性子星合体からの光の偏りが起こる新しいメカニズムを提唱

    • URL

      https://www2.kek.jp/ipns/ja/post/2018/11/polar_knovae/

  • [Remarks] KEK・つくばエキスポセンターの「七夕講演会2018」に約90人

    • URL

      https://www2.kek.jp/ipns/ja/post/2018/07/tana/

  • [Funded Workshop] International KEK-Cosmo and APCosPA Winter School 2019 Primordial Black Hole2019

URL: 

Published: 2019-12-27  

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