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Workshop for the Global Cosmic Ray Observatory -- Challenging Next-Generation Multi-Messenger Astronomy with Interdisciplinary Research

from Tuesday, 9 September 2025 (09:00) to Thursday, 11 September 2025 (18:30)
University of Tokyo (Koshiba Hall, Hongo Campus)

        : Sessions
    /     : Talks
        : Breaks
9 Sept 2025
10 Sept 2025
11 Sept 2025
AM
09:30
Registration (until 10:00)
10:00
Opening and lesson learned from current multi-messenger astronomy (Convener: Toshihiro Fujii) (until 12:10)
10:00 The Global Cosmic Ray Observatory (GCOS) – Status and Perspectives - Jörg Hörandel  
10:30 Declination Dependence in the Cosmic Ray Energy Spectrum - Jihyun Kim (Osaka Metropolitan University)  
10:50 SWGO: future perspective in the multi-messenger era - Alessio Porcelli (Universidad de Antofagasta)  
11:20 A new air shower array in the Southern Hemisphere looking for the origins of Cosmic rays: the ALPACA experiment - Dr Marcos Anzorena (ICRR, The University of Tokyo)  
11:40 Multi-messenger astronomy with IceCube - Dr Koji Noda (Chiba University)  
10:00
Theory session (Convener: Yutaka Ohira) (until 12:30)
10:00 Theoretical Modeling for Galactic PeVatrons and Super-knee Cosmic-ray Sources - Shigeo Kimura (Tohoku University)  
10:30 Sources of Ultrahigh-Energy Cosmic-Ray Nuclei and Multimessenger Implications - Kohta Murase (Penn State University)  
11:00 Search for magnetar-connected cosmic ray PeVatrons - Anastasiia Sokareva (Taras Shevchenko University of Kyiv)  
11:20 Extremely-energetic cosmic rays with GCOS - Leonel Morejon (Wuppertal University)  
11:40 Can Relativistic Shock Waves Accelerate Cosmic Rays via the First-Order Fermi Process? - Kanji Morikawa  
10:00
Science goal session (Convener: Hiroaki Menjo) (until 12:20)
10:00 Paving the way towards a successful GCOS proposal - Thoughts from an Auger perspective - Ralph Richard Engel (KIT - Karlsruhe Institute of Technology (DE)) Ralph Richard Engel (KIT - Karlsruhe Institute of Technology (DE))  
10:30 Forward Hadron Production and Implications for Cosmic Ray Physics with the FASER Experiment at LHC - Tomohiro Inada (Kyushu University (JP))  
11:00 Coordinated UHECR Observations and Global Synergies: perspective and insights from the JEM-EUSO Program - Etienne PARIZOT  
11:20 Prospects for Deep-Learning-Based Mass Reconstruction of Ultra-High-Energy Cosmic Rays using Simulated Air-Shower Profiles - Dr Eric Mayotte (Colorado School of Mines) Eric Mayotte (Colorado School of Mines)  
11:40 DEASA: Shower rates Monitoring System with Space Weather Detection at Low Latitudes and Portable muon telescope studies solar correlations with cosmic muons at Agra - Dr sonali bhatnagar  
PM
14:00
UHECR Review and interdisciplinary session (Convener: Eiji Kido) (until 16:10)
14:00 Open Questions at Ultra-High Energies and the Path Forward with GCOS - Michael Unger (Karlsruhe Institute for Technology)  
14:30 Unravelling Photoabsorption in Light Nuclei: Insights from the PANDORA Project - Luna Pellegri  
15:00 What do X-ray observations tell us about cosmic-ray acceleration physics in extreme environments in our Galaxy? - Hiromasa Suzuki (University of Miyazaki)  
15:30 Photo nuclear reaction and charged particle decay measurement in the PANDORA project. - Yohei Sasagawa (PCNP, Osaka university)  
15:50 Mini-EUSO results and possible synergies with GCOS science and interdisciplinary research - Mario Edoardo Bertaina  
16:40
Poster session, Discussion, information exchange and collaborative work 1 (until 18:40)
17:00 2024年5月におけるフォーブッシュ効果の観測 - 舞羽 牛田 菜々香 福﨑 采佳 倉科 瑞紗 松永  
17:00 Analysis of Inclined Air Shower Events Observed by the TAx4 SD - Chisato Koyama (ICRR, The University of Tokyo)  
17:00 Autonomous Observation Tests and Detector‐Upgrade Progress of the CRAFFT Telescope for UHECR Detection - Kota Tokuyama (Shinshu University)  
17:00 Constrain the limits of UHECR source parameters with 100EeV multiplets - Ryo Higuchi  
17:00 Development of a portable cosmic-ray detector to make particle physics accessible to visually impaired individuals - Mihiro Nukiwa  
17:00 EarthCARE Laser Event observed by the Fluorescence Detector in the Telescope Array project - Masaki TERAMOTO (Osaka Electro-Communication University)  
17:00 Evaluating the performance of a FAST only reconstruction - Fraser Bradfield  
17:00 Evaluation of long-term PMT gain fluctuations using standard light source analysis with a new air fluorescence telescope - Haruka Tachibana (Osaka Metropolitan University)  
17:00 Experimental Investigation of Muon Attenuation in Concrete with Varying Densities - Miku Yamamoto  
17:00 FAST - a stand-alone new generation fluorescence telescope - Dr Dusan Mandat (Institute of Physics of the Czech Academy of Sciences)  
17:00 Improvements of the Reconstruction Program for the TALE Infill SD - Haruto Matsushita (Osaka Metropolitan University)  
17:00 Improving reconstruction accuracy by incorporating air shower asymmetry for TAx4 SD - Ryunosuke SAKAMOTO (Osaka Electro-Communication University)  
17:00 Measurements of the charge ratio and polarization of cosmic-ray muons with the Super-Kamiokande detector - Yuuki Nakano  
17:00 Neutrino Search by the Telescope Array Surface Detectors - Kaoru Takahashi  
17:00 Photo nuclear reactions and decay observation for UHECRs (PANDORA) - Yumaro Suzuki  
19:00
Social dinner and networking (until 21:00)
14:00
Detector session (Convener: Yuichiro Tameda) (until 16:15)
14:00 Surface detectors: a solution for large exposure Observatories? - Ioana Maris  
14:30 Considerations for the next-generation fluorescence detectors - Shunsuke Sakurai (Osaka Metropolitan University)  
15:00 Low-Elevation Telescopes for GCOS and Neutrino Searches - Michael Unger (Karlsruhe Institute for Technology)  
15:15 Advances in Radio Detection of Cosmic Rays - Hitoshi Oshima (ICRR, the University of Tokyo)  
15:45 Discussion  
17:00
Poster session, Discussion, information exchange and collaborative work 2 (until 19:00)
14:00
Outreach and education session (Convener: Yuko Ikkatai) (until 15:10)
14:00 Online Support for Cosmic Ray Research by High School Students and the Creation of International Collaborative Opportunities - Kazuo Tanaka  
14:20 Visualization of Cosmic Ray Air Showers in Virtual Reality - Daisuke Ikeda (Kanagawa University)  
14:40 Group photo session  
15:30
Discussion, Summary and Closing (Convener: Toshihiro Fujii) (until 17:30)