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2023 Fiscal Year Annual Research Report

Understanding Multimessenger Connections among High-Energy Cosmic Particles

Research Project

Project/Area Number 20H01901
Research InstitutionKyoto University

Principal Investigator

村瀬 孔大  京都大学, 基礎物理学研究所, 特任准教授 (00839433)

Co-Investigator(Kenkyū-buntansha) 井岡 邦仁  京都大学, 基礎物理学研究所, 教授 (80402759)
Project Period (FY) 2020-04-01 – 2024-03-31
Keywordsマルチメッセンジャー / ニュートリノ / ガンマ線 / 超高エネルギー宇宙線
Outline of Annual Research Achievements

超高エネルギー宇宙線と高エネルギーニュートリノの起源の有力候補としてブレーザーと呼ばれる活動銀河のフレアが議論されている。ブレーザーのガンマ線データを解析し、フレア時と静穏時に放出されるエネルギー量を比較した。フレア時に出ているガンマ線は10%程度である一方、ニュートリノ放射はフレア時の放射が支配的である可能性があることがわかった。
高エネルギーニュートリノと高エネルギーガンマ線の起源について、2019年に提案した活動銀河コロナからの高エネルギー放射理論の研究をさらに進め、NGC 1068、NGC 4151、NGC 4945、Circinus銀河からのニュートリノとガンマ線スペクトルの理論計算、及びガンマ線データの解析を行った。NGC 1068とNGC 4151のニュートリノデータを説明しつつ、NGC 1068とNGC 4945のガンマ線データにコロナ起源と無矛盾な兆候があることを発見した。
相互作用型の超新星からの高エネルギー放射を包括的に計算するコードを完成させ、銀河系内に超新星が起きた場合にLHCのATLAS検出器での高エネルギーニュートリノ検出可能性を調べた。
継続時間の長いガンマ線バーストについて、高エネルギーニュートリノとMeVニュートリノの相互作用を通したニュートリノ振動が起こることを世界で初めて指摘した。またoff-axisガンマ線放射の定量的計算を行った。
継続時間が短いガンマ線バーストについて、ニュートリノと重力波の同時検出可能性を詳しく調べた。

Research Progress Status

令和5年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和5年度が最終年度であるため、記入しない。

  • Research Products

    (44 results)

All 2024 2023 Other

All Int'l Joint Research (6 results) Journal Article (27 results) (of which Int'l Joint Research: 26 results,  Peer Reviewed: 26 results,  Open Access: 16 results) Presentation (11 results) (of which Int'l Joint Research: 10 results,  Invited: 10 results)

  • [Int'l Joint Research] Penn State University/U. Nevada, Las Vegas/U. Wisconsin, Madison(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      Penn State University/U. Nevada, Las Vegas/U. Wisconsin, Madison
    • # of Other Institutions
      6
  • [Int'l Joint Research] Nanjing University(中国)

    • Country Name
      CHINA
    • Counterpart Institution
      Nanjing University
  • [Int'l Joint Research] IAP(フランス)

    • Country Name
      FRANCE
    • Counterpart Institution
      IAP
  • [Int'l Joint Research] U. Athens(ギリシャ)

    • Country Name
      GREECE
    • Counterpart Institution
      U. Athens
  • [Int'l Joint Research] Max Planck Institute(ドイツ)

    • Country Name
      GERMANY
    • Counterpart Institution
      Max Planck Institute
  • [Int'l Joint Research]

    • # of Other Countries
      1
  • [Journal Article] Oscillations of high-energy cosmic neutrinos in the copious MeV neutrino background2024

    • Author(s)
      Abbar Sajad、Carpio Jose Alonso、Murase Kohta
    • Journal Title

      Physical Review D

      Volume: 109 Pages: 023025

    • DOI

      10.1103/PhysRevD.109.023025

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Sub-GeV Gamma Rays from Nearby Seyfert Galaxies and Implications for Coronal Neutrino Emission2024

    • Author(s)
      Murase Kohta、Karwin Christopher M.、Kimura Shigeo S.、Ajello Marco、Buson Sara
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 961 Pages: L34~L34

    • DOI

      10.3847/2041-8213/ad19c5

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Gravitational wave triggered searches for high-energy neutrinos from binary neutron star mergers: Prospects for next generation detectors2024

    • Author(s)
      Mukhopadhyay Mainak、Kimura Shigeo S.、Murase Kohta
    • Journal Title

      Physical Review D

      Volume: 109 Pages: 043053

    • DOI

      10.1103/PhysRevD.109.043053

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Detecting High-Energy Neutrinos from Galactic Supernovae with ATLAS2024

    • Author(s)
      Wen Alex Y.、Arguelles Carlos A.、Kheirandish Ali、Murase Kohta
    • Journal Title

      Physical Review Letters

      Volume: 132 Pages: 061001

    • DOI

      10.1103/PhysRevLett.132.061001

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Constraining decaying very heavy dark matter from galaxy clusters with 14 year Fermi-LAT data2024

    • Author(s)
      Song Deheng、Murase Kohta、Kheirandish Ali
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2024 Pages: 024~024

    • DOI

      10.1088/1475-7516/2024/03/024

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Off-axis MeV and very-high-energy gamma-ray emissions from structured gamma-ray burst jets2024

    • Author(s)
      Bosnjak Zeljka、Zhang B Theodore、Murase Kohta、Ioka Kunihito
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 528 Pages: 4307~4313

    • DOI

      10.1093/mnras/stae093

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] What if GW190425 did not produce a black hole promptly?2024

    • Author(s)
      Radice David、Ricigliano Giacomo、Bhattacharya Mukul、Perego Albino、Fattoyev Farrukh J、Murase Kohta
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 528 Pages: 5836~5844

    • DOI

      10.1093/mnras/stae400

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Nonlinear aspects of stochastic particle acceleration2024

    • Author(s)
      Lemoine Martin、Murase Kohta、Rieger Frank
    • Journal Title

      Physical Review D

      Volume: 109 Pages: 063006

    • DOI

      10.1103/PhysRevD.109.063006

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] External Inverse-compton and Proton Synchrotron Emission from the Reverse Shock as the Origin of VHE Gamma Rays from the Hyper-bright GRB 221009A2023

    • Author(s)
      Zhang B. Theodore、Murase Kohta、Ioka Kunihito、Song Deheng、Yuan Chengchao、Meszaros Peter
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 947 Pages: L14~L14

    • DOI

      10.3847/2041-8213/acc79f

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Time-delayed neutrino emission from supernovae as a probe of dark matter-neutrino interactions2023

    • Author(s)
      Carpio Jose Alonso、Kheirandish Ali、Murase Kohta
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2023 Pages: 019~019

    • DOI

      10.1088/1475-7516/2023/04/019

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High-energy neutrino emission from magnetized jets of rapidly rotating protomagnetars2023

    • Author(s)
      Bhattacharya Mukul、Carpio Jose A、Murase Kohta、Horiuchi Shunsaku
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 521 Pages: 2391~2407

    • DOI

      10.1093/mnras/stad494

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Revisiting ultrahigh-energy constraints on decaying superheavy dark matter2023

    • Author(s)
      Das Saikat、Murase Kohta、Fujii Toshihiro
    • Journal Title

      Physical Review D

      Volume: 107 Pages: 103013

    • DOI

      10.1103/PhysRevD.107.103013

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Light curves of BSM-induced neutrino echoes in the optically thin limit2023

    • Author(s)
      Eskenasy Ryan、Kheirandish Ali、Murase Kohta
    • Journal Title

      Physical Review D

      Volume: 107 Pages: 103038

    • DOI

      10.1103/PhysRevD.107.103038

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High-energy cosmic neutrinos as a probe of the vector mediator scenario in light of the muon g-2 anomaly and Hubble tension2023

    • Author(s)
      Carpio Jose Alonso、Murase Kohta、Shoemaker Ian M.、Tabrizi Zahra
    • Journal Title

      Physical Review D

      Volume: 107 Pages: 103057

    • DOI

      10.1103/PhysRevD.107.103057

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High-energy Neutrino Emission Associated with Gravitational-wave Signals: Effects of Cocoon Photons and Constraints on Late-time Emission2023

    • Author(s)
      Matsui Riki、Kimura Shigeo S.、Toma Kenji、Murase Kohta
    • Journal Title

      The Astrophysical Journal

      Volume: 950 Pages: 190~190

    • DOI

      10.3847/1538-4357/acd004

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Two-component jet model for multiwavelength afterglow emission of the extremely energetic burst GRB 221009A2023

    • Author(s)
      Sato Yuri、Murase Kohta、Ohira Yutaka、Yamazaki Ryo
    • Journal Title

      Monthly Notices of the Royal Astronomical Society: Letters

      Volume: 522 Pages: L56~L60

    • DOI

      10.1093/mnrasl/slad038

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Radiative Acceleration of Dense Circumstellar Material in Interacting Supernovae2023

    • Author(s)
      Tsuna Daichi、Murase Kohta、Moriya Takashi J.
    • Journal Title

      The Astrophysical Journal

      Volume: 952 Pages: 115~115

    • DOI

      10.3847/1538-4357/acdb71

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Flare Duty Cycle of Gamma-Ray Blazars and Implications for High-energy Neutrino Emission2023

    • Author(s)
      Yoshida Kenji、Petropoulou Maria、Murase Kohta、Oikonomou Foteini
    • Journal Title

      The Astrophysical Journal

      Volume: 954 Pages: 194~194

    • DOI

      10.3847/1538-4357/acea74

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Luminous Radio Emission from the Superluminous Supernova 2017ens at 3.3 yr after Explosion2023

    • Author(s)
      Margutti Raffaella、Bright J. S.、Matthews D. J.、Coppejans D. L.、Alexander K. D.、Berger E.、Bietenholz M.、Chornock R.、DeMarchi L.、Drout M. R.、Eftekhari T.、Jacobson-Galan W. V.、Laskar T.、Milisavljevic D.、Murase K.、Nicholl M.、Omand C. M. B.、Stroh M.、Terreran G.、VanderLey B. A.
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 954 Pages: L45~L45

    • DOI

      10.3847/2041-8213/acf1fd

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Disentangling the Hadronic Components in NGC 10682023

    • Author(s)
      Ajello Marco、Murase Kohta、McDaniel Alex
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 954 Pages: L49~L49

    • DOI

      10.3847/2041-8213/acf296

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Nuclear and electromagnetic cascades induced by ultra-high-energy cosmic rays in radio galaxies: implications for Centaurus A2023

    • Author(s)
      Zhang B Theodore、Murase Kohta
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 524 Pages: 76~89

    • DOI

      10.1093/mnras/stad1829

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Detecting High-energy Neutrino Minibursts from Local Supernovae with Multiple Neutrino Observatories2023

    • Author(s)
      Kheirandish Ali、Murase Kohta
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 956 Pages: L8~L8

    • DOI

      10.3847/2041-8213/acf84f

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multiwavelength afterglow emission from bursts associated with magnetar flares and fast radio bursts2023

    • Author(s)
      Wei Yujia、Zhang B Theodore、Murase Kohta
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 524 Pages: 6004~6014

    • DOI

      10.1093/mnras/stad2122

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Decomposing the Origin of TeV-PeV Emission from the Galactic Plane: Implications of Multimessenger Observations2023

    • Author(s)
      Fang Ke、Murase Kohta
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 957 Pages: L6~L6

    • DOI

      10.3847/2041-8213/ad012f

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] High-Energy Neutrinos from Active Galactic Nuclei2023

    • Author(s)
      Murase Kohta、Stecker Floyd W.
    • Journal Title

      The Encyclopedia of Cosmology. Set 2: Frontiers in Cosmology

      Volume: 2 Pages: 483~540

    • DOI

      10.1142/9789811282645_0010

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Revisiting tests of Lorentz invariance with gamma-ray bursts: Effects of intrinsic lags2023

    • Author(s)
      Vardanyan Valeri、Takhistov Volodymyr、Ata Metin、Murase Kohta
    • Journal Title

      Physical Review D

      Volume: 108 Pages: 123023

    • DOI

      10.1103/PhysRevD.108.123023

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mineral detection of neutrinos and dark matter. A whitepaper2023

    • Author(s)
      Baum Sebastian et al.
    • Journal Title

      Physics of the Dark Universe

      Volume: 41 Pages: 101245~101245

    • DOI

      10.1016/j.dark.2023.101245

  • [Presentation] IceCube Neutrinos and Dark Matter2024

    • Author(s)
      Kohta Murase
    • Organizer
      Extreme Mass Dark Matter Workshop: from Superlight to Superheavy
    • Int'l Joint Research
  • [Presentation] Multimessenger Study of Heavy Dark Matter A02 Group Status Report2024

    • Author(s)
      Kohta Murase
    • Organizer
      What is Dark Matter?
    • Invited
  • [Presentation] Origin of High-Energy Neutrinos2024

    • Author(s)
      Kohta Murase
    • Organizer
      JPS Meeting
    • Int'l Joint Research / Invited
  • [Presentation] High-Energy Multimessenger Emission from Supernovae2023

    • Author(s)
      Kohta Murase
    • Organizer
      ICRC Satellite Workshop
    • Int'l Joint Research / Invited
  • [Presentation] Ultrahigh - Energy Neutrino Sources2023

    • Author(s)
      Kohta Murase
    • Organizer
      RNO-G Collaboration Meeting
    • Int'l Joint Research / Invited
  • [Presentation] High-Energy Neutrinos from Supermassive Black Holes2023

    • Author(s)
      Kohta Murase
    • Organizer
      CDY Black Hole Flare Workshop
    • Int'l Joint Research / Invited
  • [Presentation] High-Energy Astrophysical Neutrinos and Multimessenger Implications2023

    • Author(s)
      Kohta Murase
    • Organizer
      32nd Texas Symposium on Relativistic Astrophysics
    • Int'l Joint Research / Invited
  • [Presentation] Multimessenger View of High-Energy Neutrino Sources2023

    • Author(s)
      Kohta Murase
    • Organizer
      AstroParticle Symposium
    • Int'l Joint Research / Invited
  • [Presentation] Theoretical perspectives on multimessenger astrophysics2023

    • Author(s)
      B. Theodore Zhang
    • Organizer
      AstroParticle Symposium
    • Int'l Joint Research / Invited
  • [Presentation] Very-high-energy gamma rays from compact mergers2023

    • Author(s)
      B. Theodore Zhang
    • Organizer
      AstroParticle Symposium
    • Int'l Joint Research / Invited
  • [Presentation] Nuclear and electron cascades induced by UHECRs2023

    • Author(s)
      B. Theodore Zhang
    • Organizer
      The 1st LHAASO Symposium
    • Int'l Joint Research / Invited

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Published: 2024-12-25  

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