Multimesseger Study of Heavy Dark Matter

• Project Area: What is dark matter? - Comprehensive study of the huge discovery space in dark matter
• Project/Area Number: 20H05852
• Research Category: Grant-in-Aid for Transformative Research Areas (A)
• Allocation Type: Single-year Grants
• Review Section: Transformative Research Areas, Section (II)
• Research Institution: Kyoto 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): 藤井 俊博 大阪公立大学, 大学院理学研究科, 准教授 (50706877) ; 廣島 渚 富山大学, 学術研究部理学系, 助教 (60845741) ; 山中 真人 法政大学, 理工学部, 助手 (70585992) ; 成子 篤 京都大学, 基礎物理学研究所, 特定助教 (80749507)
• Project Period (FY): 2020-11-19 – 2025-03-31
• Project Status: Granted (Fiscal Year 2024)
• Budget Amount: ¥55,380,000 (Direct Cost: ¥42,600,000、Indirect Cost: ¥12,780,000); Fiscal Year 2024: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2023: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000); Fiscal Year 2022: ¥15,860,000 (Direct Cost: ¥12,200,000、Indirect Cost: ¥3,660,000); Fiscal Year 2021: ¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000); Fiscal Year 2020: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
• Keywords: 素粒子(理論) / 宇宙線(理論) / 宇宙物理(理論) / ダークマター / マルチメッセンジャー / ガンマ線 / 宇宙線 / 理論天文学 / ニュートリノ / ダークマターハロー / 超高エネルギー宇宙線

Outline of Research at the Start

ダークマターの正体は究極の謎の一つであるが、その質量はTeVよりもずっと重く、電弱相互作用と強い相互作用の統一が期待される大統一スケール や量子重力が重要になるプランクスケールに近い可能性がある。人工の加速器で到達できるエネルギースケールを超える質量を持つような重いダークマターはその粒子数密度が少なく直接検出も困難と考えられており、探索には宇宙線やニュートリノ、ガンマ線や重力波を用いた間接検出が鍵となる。本研究では、急速に発展しつつあるマルチメッセンジャー観測のデータを最大限に活用し、重いダークマターの理論への新たな知見を得ることを目指す。

Outline of Annual Research Achievements

重いダークマターの崩壊や対消滅によって作られた高エネルギーガンマ線は周囲の光子場と相互作用して電磁カスケードを起こし、より低いエネルギーのガンマ線を作る。銀河団や矮小銀河はダークマターの間接探査に有効な天体である。我々はフェルミ衛星によって得られた14年のガンマ線データを解析しつつ、重いダークマターの対消滅や崩壊によって生まれるガンマ線やレプトンのスペクトルを計算し、更にガンマ線の伝搬コードを適用して遠方銀河から地球に到達するまでのスペクトルへの影響も考慮した。矮小銀河の解析においては前年度に構築したダークマターサブハローの質量関数の性質を記述する定式化も利用した。これまでの探査では主にダークマターからの直接的なガンマ線に着目していたが、MAGICやHAWCの観測による制限よりも強い制限を、フェルミ衛星のデータから我々の詳細な計算を通して得ることができた。
すばる望遠鏡のCCDには大量の宇宙線空気シャワー粒子が入射しているため、その画像が取得される可能性があることを見出した。すばる望遠鏡HSCのデータに入射した宇宙線空気シャワーの解析を行い、前例のない位置分解能での空気シャワー粒子の撮像に成功した。この発見は、幅広い研究領域での融合から生まれた成果と言える。
極めて弱い相互作用を持つダークマターの探索において、天然の鉱物結晶は地質学的時間スケールで稼働しているため、少量でも十分な露出量が期待できるターゲット物質として期待されている。天然白雲母の中に存在するダークマター由来の原子核反跳の痕跡を探る実験の基礎づけを進めた。

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

新型コロナウィルスの影響により、ポスドクのDas氏とSong氏の雇用が遅延したが、重いダークマターの粒子の寿命や対消滅断面積について、超高エネルギーニュートリノ背景放射観測を用いた制限と、銀河団と矮小銀河についてFermiによるガンマ線データを用いた制限を行い、成果をまとめた。

Strategy for Future Research Activity

マルチメッセンジャー観測から得られたダークマターへの制限を宇宙論的な制限と比べつつ、ダークマター生成機構への示唆を議論する。

Research Products

• [Int'l Joint Research] Penn State(米国)
• [Int'l Joint Research] DESY(ドイツ)
• [Int'l Joint Research] U. Athens(ギリシャ)
• [Journal Article] High-energy Neutrino Emission from Espresso-reaccelerated Ions in Jets of Active Galactic Nuclei (2023)
  • Author(s): Mbarek Rostom、Caprioli Damiano、Murase Kohta
  • Journal Title: The Astrophysical Journal Volume: 942 Issue: 1 Pages: 37-37
  • DOI: 10.3847/1538-4357/aca481
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Simulating neutrino echoes induced by secret neutrino interactions (2023)
  • Author(s): Carpio Jose Alonso、Murase Kohta
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2023 Issue: 02 Pages: 042-042
  • DOI: 10.1088/1475-7516/2023/02/042
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Synchrotron self-Compton emission in the two-cmponent jet model for gamma-ray bursts (2023)
  • Author(s): Yuri Sato, Kaori Obayashi, Bing Theodre Zhang, Shuta J. Tanaka, Kohta Murase, Yutaka Ohira, and Ryo Yamazaki
  • Journal Title: Journal of High Energy Astrophysics Volume: 37 Pages: 51-61
  • DOI: 10.1016/j.jheap.2022.12.004
  • 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 221009A (2023)
  • Author(s): Zhang B. Theodore、Murase Kohta、Ioka Kunihito、Song Deheng、Yuan Chengchao、Meszaros Peter
  • Journal Title: The Astrophysical Journal Letters Volume: 947 Issue: 1 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 interactions (2023)
  • Author(s): Carpio Jose Alonso、Kheirandish Ali、Murase Kohta
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2023 Issue: 04 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 protomagnetars (2023)
  • Author(s): Bhattacharya Mukul、Carpio Jose A、Murase Kohta、Horiuchi Shunsaku
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 521 Issue: 2 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 matter (2023)
  • Author(s): Das Saikat、Murase Kohta、Fujii Toshihiro
  • Journal Title: Physical Review D Volume: 107 Issue: 10 Pages: 103013-103013
  • 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 limit (2023)
  • Author(s): Eskenasy Ryan、Kheirandish Ali、Murase Kohta
  • Journal Title: Physical Review D Volume: 107 Issue: 10 Pages: 103038-103038
  • 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 tension (2023)
  • Author(s): Carpio Jose Alonso、Murase Kohta、Shoemaker Ian M.、Tabrizi Zahra
  • Journal Title: Physical Review D Volume: 107 Issue: 10 Pages: 103057-103057
  • 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 Emission (2023)
  • Author(s): Matsui Riki、Kimura Shigeo S.、Toma Kenji、Murase Kohta
  • Journal Title: The Astrophysical Journal Volume: 950 Issue: 2 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 extremely energetic burst GRB 221009A (2023)
  • Author(s): Yuri Sato, Kohta Murase, Yutaka Ohira, and Ryo Yamazaki
  • Journal Title: Monthly Notices of the Royal Astronomical Society Letters Volume: 552 Issue: 1 Pages: 56-60
  • DOI: 10.1093/mnrasl/slad038
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Radiative Acceleration of Dense Circumstellar Material in Interacting Supernovae (2023)
  • Author(s): Tsuna Daichi、Murase Kohta、Moriya Takashi J.
  • Journal Title: The Astrophysical Journal Volume: 952 Issue: 2 Pages: 115-115
  • DOI: 10.3847/1538-4357/acdb71
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] No smooth spacetime in Lorentzian quantum cosmology and trans-Planckian physics (2023)
  • Author(s): Matsui Hiroki、Mukohyama Shinji、Naruko Atsushi
  • Journal Title: Physical Review D Volume: 107 Issue: 4 Pages: 043511-043511
  • DOI: 10.1103/physrevd.107.043511
  • Peer Reviewed / Open Access
• [Journal Article] Determination of coupling patterns by parallel searches for μ??→?e+ and μ??→?e? in muonic atoms (2023)
  • Author(s): Sato Joe、Sugawara Kohei、Uesaka Yuichi、Yamanaka Masato
  • Journal Title: Physics Letters B Volume: 836 Pages: 137617-137617
  • DOI: 10.1016/j.physletb.2022.137617
  • Peer Reviewed / Open Access
• [Journal Article] Observing cosmic-ray extensive air showers with a silicon imaging detector (2023)
  • Author(s): Kawanomoto Satoshi、Koike Michitaro、Bradfield Fraser、Fujii Toshihiro、Komiyama Yutaka、Miyazaki Satoshi、Morokuma Tomoki、Murayama Hitoshi、Oguri Masamune、Terai Tsuyoshi
  • Journal Title: Scientific Reports Volume: 13 Issue: 1 Pages: 16091-16091
  • DOI: 10.1038/s41598-023-42164-4
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Mineral detection of neutrinos and dark matter. A whitepaper (2023)
  • 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
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Light curves of BSM-induced neutrino echoes in the optically-thin limit (2023)
  • Author(s): R. Eskenasy, A. Kheirandish, K. Murase
  • Journal Title: Phys.Rev.D Volume: -
  • 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 tension (2023)
  • Author(s): J. A. Carpio et al.
  • Journal Title: Phys.Rev.D Volume: -
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Revisiting ultrahigh-energy constraints on decaying super-heavy dark matter (2023)
  • Author(s): S. Das, K. Murase, T. Fujii
  • Journal Title: Phys.Rev.D Volume: -
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Multi-wavelength constraints on the outflow properties of the extremely bright millisecond radio bursts from the galactic magnetar SGR 1935?+?2154 (2022)
  • Author(s): Yamasaki Shotaro、Kashiyama Kazumi、Murase Kohta
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 511 Issue: 3 Pages: 3138-3149
  • DOI: 10.1093/mnras/stac234
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] GeV Signatures of Short Gamma-Ray Bursts in Active Galactic Nuclei (2022)
  • Author(s): Yuan Chengchao、Murase Kohta、Guetta Dafne、Pe’er Asaf、Bartos Imre、Meszaros Peter
  • Journal Title: The Astrophysical Journal Volume: 932 Issue: 2 Pages: 80-80
  • DOI: 10.3847/1538-4357/ac6ddf
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Candidate Tidal Disruption Event AT2019fdr Coincident with a High-Energy Neutrino (2022)
  • Author(s): Reusch Simeon et al.
  • Journal Title: Physical Review Letters Volume: 128 Issue: 22 Pages: 221101-221101
  • DOI: 10.1103/physrevlett.128.221101
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Variable thermal energy injection from magnetar spin-down as a possible cause of stripped-envelope supernova light-curve bumps (2022)
  • Author(s): Moriya Takashi J、Murase Kohta、Kashiyama Kazumi、Blinnikov Sergei I
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 513 Issue: 4 Pages: 6210-6218
  • DOI: 10.1093/mnras/stac1352
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] On the synthesis of heavy nuclei in protomagnetar outflows and implications for ultra-high energy cosmic rays (2022)
  • Author(s): Bhattacharya Mukul、Horiuchi Shunsaku、Murase Kohta
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 514 Issue: 4 Pages: 6011-6024
  • DOI: 10.1093/mnras/stac1721
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] High-Energy Extragalactic Neutrino Astrophysics (2022)
  • Author(s): Kurahashi Naoko、Murase Kohta、Santander Marcos
  • Journal Title: Annual Review of Nuclear and Particle Science Volume: 72 Issue: 1 Pages: 365-387
  • DOI: 10.1146/annurev-nucl-011122-061547
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Identifying High-energy Neutrino Transients by Neutrino Multiplet-triggered Follow-ups (2022)
  • Author(s): Shigeru Yoshida, Kohta Murase, Masaomi Tanaka, Nobuhiro Shimizu, Aya Ishihara
  • Journal Title: The Astrophysical Journal Volume: 937 Issue: 2 Pages: 108-108
  • DOI: 10.3847/1538-4357/ac8dfd
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Impacts of Jets and winds from primordial black holes (2022)
  • Author(s): Takhistov Volodymyr、Lu Philip、Murase Kohta、Inoue Yoshiyuki、Gelmini Graciela B
  • Journal Title: Monthly Notices of the Royal Astronomical Society: Letters Volume: 517 Issue: 1 Pages: L1-L4
  • DOI: 10.1093/mnrasl/slac097
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Neutrinos unveil hidden galactic activities (2022)
  • Author(s): Murase Kohta
  • Journal Title: Science Volume: 378 Issue: 6619 Pages: 474-475
  • DOI: 10.1126/science.ade4190
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Neutrinos from the Brightest Gamma-Ray Burst? (2022)
  • Author(s): Murase Kohta、Mukhopadhyay Mainak、Kheirandish Ali、Kimura Shigeo S.、Fang Ke
  • Journal Title: The Astrophysical Journal Letters Volume: 941 Issue: 1 Pages: L10-L10
  • DOI: 10.3847/2041-8213/aca3ae
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Hidden Hearts of Neutrino Active Galaxies (2022)
  • Author(s): Murase Kohta
  • Journal Title: The Astrophysical Journal Letters Volume: 941 Issue: 1 Pages: L17-L17
  • DOI: 10.3847/2041-8213/aca53c
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Testing the non-circularity of the spacetime around Sagittarius A* with orbiting pulsars (2022)
  • Author(s): Takamori Yohsuke、Naruko Atsushi、Sakurai Yusuke、Takahashi Keitaro、Yamauchi Daisuke、Yoo Chul-Moon
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 未定 Issue: Supplement_1 Pages: S217-S231
  • DOI: 10.1093/pasj/psac003
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Charged lepton flavor violation associated with heavy quark production in deep inelastic lepton-nucleon scattering via scalar exchange (2022)
  • Author(s): Kiyo Yuichiro、Takeuchi Michihisa、Uesaka Yuichi、Yamanaka Masato
  • Journal Title: Journal of High Energy Physics Volume: 2022 Issue: 4 Pages: 1-37
  • DOI: 10.1007/jhep04(2022)044
  • Peer Reviewed / Open Access
• [Journal Article] DeWitt boundary condition is consistent in Horava-Lifshitz quantum gravity (2022)
  • Author(s): Matsui Hiroki、Mukohyama Shinji、Naruko Atsushi
  • Journal Title: Physics Letters B Volume: 833 Pages: 137340-137340
  • DOI: 10.1016/j.physletb.2022.137340
  • Peer Reviewed / Open Access
• [Journal Article] Asymmetric Mediator in Scotogenic Model (2022)
  • Author(s): K. Asai, Y. Sakai, J. Sato, Y. Takanishi, M. Yamanaka
  • Journal Title: Physics Letters B Volume: 836 Pages: 137627-137627
  • DOI: 10.1016/j.physletb.2022.137627
  • Peer Reviewed / Open Access
• [Journal Article] Semi-analytical frameworks for subhaloes from the smallest to the largest scale (2022)
  • Author(s): Hiroshima Nagisa、Ando Shin’ichiro、Ishiyama Tomoaki
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 517 Issue: 2 Pages: 2728-2737
  • DOI: 10.1093/mnras/stac2857
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Constraining the primordial curvature perturbation using dark matter substructure (2022)
  • Author(s): Ando Shin’ichiro、Hiroshima Nagisa、Ishiwata Koji
  • Journal Title: Physical Review D Volume: 106 Issue: 10 Pages: 103014-103025
  • DOI: 10.1103/physrevd.106.103014
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Ultrahigh-energy cosmic-ray signature in GRB 221009A (2022)
  • Author(s): S. Das, S. Razzaque
  • Journal Title: A&A Volume: 670 Pages: L12-L12
  • DOI: 10.1051/0004-6361/202245377
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Implications of multiwavelength spectrum on cosmic-ray acceleration in blazar TXS 0506+056 (2022)
  • Author(s): S. Das, N. Gupta, S. Razzaque
  • Journal Title: A&A Volume: 668 Pages: A146-A146
  • DOI: 10.1051/0004-6361/202244653
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Axion cloud decay due to the axion-photon conversion with background magnetic fields (2021)
  • Author(s): Yoo Chul-Moon、Naruko Atsushi、Sakurai Yusuke、Takahashi Keitaro、Takamori Yohsuke、Yamauchi Daisuke
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 74 Issue: 1 Pages: 64-72
  • DOI: 10.1093/pasj/psab110
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Multimessenger Implications of Sub-PeV Diffuse Galactic Gamma-Ray Emission (2021)
  • Author(s): K. Fang, K. Murase
  • Journal Title: Astrophys.J. Volume: 919 Issue: 2 Pages: 93-93
  • DOI: 10.3847/1538-4357/ac11f0
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] High-energy Neutrinos from Magnetized Coronae of Active Galactic Nuclei and Prospects for Identification of Seyfert Galaxies and Quasars in Neutrino Telescopes (2021)
  • Author(s): Kheirandish Ali、Murase Kohta、Kimura Shigeo S.
  • Journal Title: The Astrophysical Journal Volume: 922 Issue: 1 Pages: 45-45
  • DOI: 10.3847/1538-4357/ac1c77
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Particle Reacceleration by Turbulence and Radio Constraints on Multi-Messenger High-Energy Emission from the Coma Cluster (2021)
  • Author(s): K. Nishiwaki, K. Asano, K. Murase
  • Journal Title: Astrophys.J. Volume: 922 Issue: 2 Pages: 190-190
  • DOI: 10.3847/1538-4357/ac1cdb
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Soft gamma rays from low accreting supermassive black holes and connection to energetic neutrinos (2021)
  • Author(s): Kimura Shigeo S.、Murase Kohta、Meszaros Peter
  • Journal Title: Nature Communications Volume: 12 Issue: 1 Pages: 5615-5615
  • DOI: 10.1038/s41467-021-25111-7
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Energetics of ultrahigh-energy cosmic-ray nuclei_ (2021)
  • Author(s): Y. Jiang, B.T. Zhang, K. Murase
  • Journal Title: Phys.Rev.D Volume: 104 Issue: 4 Pages: 043017-043017
  • DOI: 10.1103/physrevd.104.043017
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Multi-messenger emission from the parsec-scale jet of the flat-spectrum radio quasar coincident with high-energy neutrino IceCube-190730A (2021)
  • Author(s): F. Oikonomou et al.
  • Journal Title: JCAP Volume: 10 Issue: 10 Pages: 82-82
  • DOI: 10.1088/1475-7516/2021/10/082
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] External Inverse-Compton Emission from Low-luminosity Gamma-Ray Bursts: Application to GRB 190829A (2021)
  • Author(s): B.T. Zhang et al.
  • Journal Title: Astrophys.J. Volume: 920 Issue: 1 Pages: 55-55
  • DOI: 10.3847/1538-4357/ac0cfc
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] External Inverse-Compton Emission Associated with Extended and Plateau Emission of Short Gamma-Ray Bursts: Application to GRB 160821B (2021)
  • Author(s): Zhang B. Theodore、Murase Kohta、Yuan Chengchao、Kimura Shigeo S.、Meszaros Peter
  • Journal Title: The Astrophysical Journal Volume: 908 Issue: 2 Pages: L36-L36
  • DOI: 10.3847/2041-8213/abe0b0
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Off-axis jet scenario for early afterglow emission of low-luminosity gamma-ray burst GRB 190829A (2021)
  • Author(s): Sato Yuri、Obayashi Kaori、Yamazaki Ryo、Murase Kohta、Ohira Yutaka
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 504 Issue: 4 Pages: 5647-5655
  • DOI: 10.1093/mnras/stab1273
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] ALMA and NOEMA constraints on synchrotron nebular emission from embryonic superluminous supernova remnants and radio?gamma-ray connection (2021)
  • Author(s): Murase Kohta、Omand Conor M B、Coppejans Deanne L、Nagai Hiroshi、Bower Geoffrey C、Chornock Ryan、Fox Derek B、Kashiyama Kazumi、Law Casey、Margutti Raffaella、M?sz?ros Peter
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 508 Issue: 1 Pages: 44-51
  • DOI: 10.1093/mnras/stab2506
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Post-merger Jets from Supermassive Black Hole Coalescences as Electromagnetic Counterparts of Gravitational Wave Emission (2021)
  • Author(s): Yuan Chengchao、Murase Kohta、Zhang B. Theodore、Kimura Shigeo S.、Meszaros Peter
  • Journal Title: The Astrophysical Journal Letters Volume: 911 Issue: 1 Pages: L15-L15
  • DOI: 10.3847/2041-8213/abee24
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Outflow Bubbles from Compact Binary Mergers Embedded in Active Galactic Nuclei: Cavity Formation and the Impact on Electromagnetic Counterparts (2021)
  • Author(s): Kimura Shigeo S.、Murase Kohta、Bartos Imre
  • Journal Title: The Astrophysical Journal Volume: 916 Issue: 2 Pages: 111-111
  • DOI: 10.3847/1538-4357/ac0535
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Latest results of ultra-high-energy cosmic ray measurements with prototypes of the Fluorescence detector Array of Single-pixel Telescopes (FAST) (2021)
  • Author(s): T. Fujii et al.
  • Journal Title: PoS (ICRC2021) Volume: 402 Pages: 402-402
  • DOI: 10.22323/1.395.0402
  • Peer Reviewed
• [Journal Article] Impacts of new small-scale N-body simulations on dark matter annihilations constrained from cosmological 21-cm line observations (2021)
  • Author(s): Hiroshima Nagisa、Kohri Kazunori、Sekiguchi Toyokazu、Takahashi Ryuichi
  • Journal Title: Physical Review D Volume: 104 Issue: 8 Pages: 1-7
  • DOI: 10.1103/physrevd.104.083547
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] On Lorentz-invariant bispin-2 theories (2021)
  • Author(s): Kimura Rampei、Naruko Atsushi、Yamauchi Daisuke
  • Journal Title: Physical Review D Volume: 104 Issue: 4 Pages: 1-20
  • DOI: 10.1103/physrevd.104.044021
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Unified approach to secondary effects on the CMB B-mode polarization (2021)
  • Author(s): Namikawa Toshiya、Naruko Atsushi、Saito Ryo、Taruya Atsushi、Yamauchi Daisuke
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2021 Issue: 10 Pages: 029-029
  • DOI: 10.1088/1475-7516/2021/10/029
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Backreaction of mass and angular momentum accretion on black holes: General formulation of metric perturbations and application to the Blandford-Znajek process (2021)
  • Author(s): Kimura Masashi、Harada Tomohiro、Naruko Atsushi、Toma Kenji
  • Journal Title: Progress of Theoretical and Experimental Physics Volume: 2021 Issue: 9 Pages: 1-26
  • DOI: 10.1093/ptep/ptab101
  • Peer Reviewed / Open Access / Int'l Joint Research
• [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] Probing <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>μ</mml:mi><mml:mi>e</mml:mi><mml:mi>γ</mml:mi><mml:mi>γ</mml:mi></mml:math> contact interactions with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>μ</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:mi>e</mml:mi></mml:math> conversion (2020)
  • Author(s): Davidson S.、Kuno Y.、Uesaka Y.、Yamanaka M.
  • Journal Title: Physical Review D Volume: 102 Issue: 11 Pages: 115043-115043
  • DOI: 10.1103/physrevd.102.115043
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] High-Energy Neutrino Emission from the Cores of Active Galactic Nucle (2023)
  • Author(s): Kohta Murase
  • Organizer: NCfA Symposium
  • Int'l Joint Research / Invited
• [Presentation] The Hearts of Active Galactic Nuclei as Hidden Neutrino Sources (2023)
  • Author(s): Kohta Murase
  • Organizer: Topical Workshop: NGC 1068 as Cosmic Laboratory
  • Int'l Joint Research / Invited
• [Presentation] High-Energy Astrophysical Neutrinos (2023)
  • Author(s): Kohta Murase
  • Organizer: Neutrino Platform Workshop
  • Int'l Joint Research / Invited
• [Presentation] High-Energy Multimessenger Emission from Supernovae (2023)
  • Author(s): Kohta Murase
  • Organizer: ICRC Satellite Workshop
  • Int'l Joint Research / Invited
• [Presentation] Updates on Cosmic Ray Extensive Air Showers detected with Subaru Hyper Supreme-Cam (2023)
  • Author(s): Toshihiro Fujii
  • Organizer: What is dark matter? - Comprehensive study of the huge discovery space in dark matter
  • Int'l Joint Research / Invited
• [Presentation] Rapporteur Talk of Cosmic Ray Indirect (CRI): The past and future 20-years endeavor for discovering origins of ultra-high energy cosmic rays (2023)
  • Author(s): Toshihiro Fujii
  • Organizer: The 38th International Cosmic Ray Conference 2023
  • Int'l Joint Research / Invited
• [Presentation] High-Energy Neutrino Emission from the Cores of Active Galactic Nuclei (2023)
  • Author(s): Kohta Murase
  • Organizer: NCfA Symposium
  • Int'l Joint Research / Invited
• [Presentation] High-Energy Neutrinos from Active Galactic Nuclei (2022)
  • Author(s): Kohta Murase
  • Organizer: Town Hall KM3Net Meeting
  • Int'l Joint Research / Invited
• [Presentation] High-Energy Multimessenger Transients (2022)
  • Author(s): Kohta Murase
  • Organizer: Neutrinos in the Multi-Messenger Era
  • Int'l Joint Research / Invited
• [Presentation] High-Energy Neutrinos from Hidden Hearts of Active Galactic Nuclei (2022)
  • Author(s): Kohta Murase
  • Organizer: MARLAM 2022
  • Int'l Joint Research
• [Presentation] Dark Matter searches with the Cherenkov Telescope Array: Weakly Interacting Massive Particles and beyond (2022)
  • Author(s): Nagisa Hirsohima
  • Organizer: Multimessenger Study of Heavy Dark Matter Workshop 2022
  • Int'l Joint Research
• [Presentation] Subaru Hyper Supreme-Cam Meets Cosmic Ray Shower (2022)
  • Author(s): Toshihiro Fujii
  • Organizer: What is dark matter? - Comprehensive study of the huge discovery space in dark matter Symposium
  • Int'l Joint Research / Invited
• [Presentation] Search for the large-scale cosmic-ray anisotropies using the TA and TALE surface detector arrays (2022)
  • Author(s): Toshihiro Fujii
  • Organizer: 6th International Symposium on Ultra High Energy Cosmic Rays
  • Int'l Joint Research
• [Presentation] Recent results from prototypes of the Fluorescence detector Array of Single-pixel Telescopes (FAST) in both hemispheres (2022)
  • Author(s): Toshihiro Fujii
  • Organizer: 6th International Symposium on Ultra High Energy Cosmic Rays
  • Int'l Joint Research
• [Presentation] EPS approach for multiscale DM halo (2022)
  • Author(s): Nagisa Hirsohima
  • Organizer: 2nd workshop: Multimessenger Study of Heavy Dark Matter
  • Int'l Joint Research
• [Presentation] Search for lepton flavor violation at the Subaru Telescope (2022)
  • Author(s): Masato Yamanaka
  • Organizer: 2nd workshop: Multimessenger Study of Heavy Dark Matter
  • Int'l Joint Research
• [Presentation] Implications from DM substructures: from low z to high z (2022)
  • Author(s): Nagisa Hiroshima
  • Organizer: Upcoming CMB observations and Cosmology
• [Presentation] 21cm線観測による暗黒物質探査における非線形構造形成の効果 (2022)
  • Author(s): 廣島渚、郡和範、関口豊和、高橋龍一
  • Organizer: 第77回日本物理学会年次大会
• [Presentation] EPS approach for multiscale DM halo (2022)
  • Author(s): Nagisa Hiroshima
  • Organizer: 2nd workshop: Multimessenger Study of Heavy Dark Matter
  • Int'l Joint Research
• [Presentation] Lepton Flavor Violation at J-PARC (2022)
  • Author(s): Masato Yamanaka
  • Organizer: Second International Workshop on the Extension Project for the J-PARC Hadron Experimental Facility
  • Invited
• [Presentation] Spatial gradient expansion approach for generic scalar-tensor theories_ (2022)
  • Author(s): Atsushi Naruko
  • Organizer: International Workshop "Dawn of Gravitational-wave Cosmology and Theory of Gravity"
  • Invited
• [Presentation] Promising Sources of High-Energy Neutrinos and Some Implication (2022)
  • Author(s): Kohta Murase
  • Organizer: KITP 2022 Workshop on Neutrinos as a Portal to New Physics and. Astrophysics
  • Int'l Joint Research / Invited
• [Presentation] Multimessenger Study of Heavy Dark Matter (2022)
  • Author(s): Kohta Murase
  • Organizer: Symposium “What is Dark Matter?”
  • Int'l Joint Research / Invited
• [Presentation] High-Energy Neutrinos from Active Galactic Nuclei (2022)
  • Author(s): Kohta Murase
  • Organizer: Town Hall KM3Net Meeting 2022
  • Int'l Joint Research / Invited
• [Presentation] WIMP annihilation signals in dwarf spheroidal galaxies as subhalos of the Milky Way (2021)
  • Author(s): Nagisa Hiroshima
  • Organizer: Kashiwa Dark Matter Symposium 2021
  • Int'l Joint Research
• [Presentation] Impacts of new small-scale N-body simulations on dark matter annihilations constrained from cosmological 21cm line observations (2021)
  • Author(s): Nagisa Hiroshima
  • Organizer: 大阪市立大学素粒子現象論研究会
• [Presentation] VHDM search & DM halo (2021)
  • Author(s): Nagisa Hiroshima
  • Organizer: 1st workshop: Multimessenger Study of Heavy Dark Matter
  • Int'l Joint Research / Invited
• [Presentation] Implications from the structure formation models of DM halo to gamma-ray search of DM (2021)
  • Author(s): Nagisa Hiroshima
  • Organizer: 北陸信越地区素粒子論グループ研究会
• [Presentation] tructure Formation Models Weaken Limits on WIMP Dark Matter from Dwarf Spheroidal Galaxies (2021)
  • Author(s): 安藤真一郎、Alex Geringer-Sameth, 廣島渚、Sebastian Hoof, Roberto Trotta, Matthew G. Walker
  • Organizer: 第76回日本物理学会年次大会
• [Presentation] Dark matter search in extended dwarf spheroidal galaxies with very-high-energy gamma-ray observations (2021)
  • Author(s): Nagisa Hiroshima
  • Organizer: 第29回新ヒッグス研究会
  • Invited
• [Presentation] Theories for Muon to Electron Conversion (2021)
  • Author(s): Masato Yamanaka
  • Organizer: 33rd COMET Collaboration Meeting & Integration Workshop
  • Invited
• [Presentation] Very Heavy Dark Matter production (2021)
  • Author(s): Masato Yamanaka
  • Organizer: 1st workshop: Multimessenger Study of Heavy Dark Matter
  • Invited
• [Presentation] Overview of Lepton Flavor Violation (2021)
  • Author(s): Masato Yamanaka
  • Organizer: 3rd Toyama International Symposium on "Physics at the Cosmic Frontier"
  • Invited
• [Presentation] Probing $\mu e \gamma \gamma$ contact interactions with $\mu \to e$ conversion (2021)
  • Author(s): Masato Yamanaka
  • Organizer: KEK Theory Meeting on Particle Physics Phenomenology (KEK-PH2021)
• [Presentation] Detailed analysis of lepton flavor violating deep-inelastic scattering by (pseudo-)scalar mediator (2021)
  • Author(s): Masato Yamanaka
  • Organizer: Higgs as a Probe of New Physics (HPNP2021)
• [Presentation] VHDM search & gravity sector (2021)
  • Author(s): Atsushi Naruko
  • Organizer: 1st workshop: Multimessenger Study of Heavy Dark Matter
  • Invited
• [Presentation] 一般的なスカラー・テンソル理論における勾配展開法 (2021)
  • Author(s): Atsushi Naruko
  • Organizer: 物理学会
• [Presentation] Axion Cloud Decay due to the Axion-photon Conversion with Background Magnetic Fields (2021)
  • Author(s): Atsushi Naruko
  • Organizer: 8th Korea-Japan workshop on Dark Energy
  • Int'l Joint Research
• [Presentation] Axion Cloud Decay due to the Axion-photon Conversion with Background Magnetic Fields (2021)
  • Author(s): Atsushi Naruko
  • Organizer: 第10回観測的宇宙論ワークショップ
• [Presentation] Axion Cloud Decay due to the Axion-photon Conversion with Background Magnetic Fields_ (2021)
  • Author(s): Atsushi Naruko
  • Organizer: The 30th Workshop on General Relativity and Gravitation in Japan
  • Int'l Joint Research
• [Presentation] Ultrahigh-Energy Cosmic-Ray Sources and Acceleration (2021)
  • Author(s): Kohta Murase
  • Organizer: GCOS Workshop
  • Int'l Joint Research / Invited
• [Presentation] High-Energy Multimessenger Particle Astrophysics (2021)
  • Author(s): Kohta Murase
  • Organizer: Astro Dark 2021
  • Int'l Joint Research / Invited
• [Book] Quantum Science: The Frontier of Physics and Chemistry (2022)
  • Author(s): Taku Onishi
  • Total Pages: 496
  • Publisher: Springer
  • ISBN: 9789811944208
• [Book] Springer (2022)
  • Author(s): Taku Onishi et al.
  • Total Pages: 505
  • Publisher: Quantum Science: The Frontier of Physics and Chemistry
  • ISBN: 9811944202
• [Book] 数理の窓から世界を読みとくー素数・AI・生物・宇宙をつなぐー (2021)
  • Author(s): 初田哲男、柴藤亮介、宮崎弘安、田中章詞、入谷亮介、廣島渚
  • Total Pages: 212
  • Publisher: 岩波書店
• [Funded Workshop] Multimessenger Study of Heavy Dark Matter Workshop 2022 (2022)
• [Funded Workshop] Multimessenger Study of Heavy Dark Matter Workshop 2021 (2021)