Work

The Global Cosmic Ray Observatory -- Challenging next-generation multi-messenger astronomy with interdisciplinary research

Year: 2025

Type: conference-paper

Abstract: The origin of ultra-high-energy cosmic rays (UHECRs) is one of the most intriguing mysteries in astroparticle physics and high-energy physics. Since UHECRs with light mass compositions are less deflected by the Galactic and extragalactic magnetic fields, their arrival directions are more strongly correlated with their origins. Charged-particle astronomy with UHECRs is hence a potentially viable probe of extremely energetic phenomena in the universe. The Global Cosmic Ray Observatory (GCOS) is a proposed next-generation observatory to elucidate these origins through precise measurements of UHECRs with unprecedented exposure and mass identification capabilities. We will focus on the ideas and requirements for GCOS summarized in https://arxiv.org/abs/2502.05657 and share the recent advances in detector developments and future perspectives with interdisciplinary research.

Source: International Cosmic Ray Conference

DOI: 10.22323/1.501.0258

Authors: Toshihiro Fujii, GCOS supporters

Institution: Osaka Metropolitan University

Language: English

Topic: Astrophysics and Cosmic Phenomena

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: Japan Society for the Promotion of Science, Institute for Cosmic Ray Research, University of Tokyo

Awards: Pioneering ultrahigh-energy cosmic ray astronomy using new air-fluorescence telescope array, Cross calibration of ultra-high-energy cosmic ray observatories using new air-fluorescence telescopes