19–21 Mar 2025
Physics Department
Europe/Athens timezone

High energy proton recordings during GLE74 on 11 May 2024

20 Mar 2025, 10:00
30m
Seminar Room (Physics Department )

Seminar Room

Physics Department

National and Kapodistrian University of Athens University Campus, Panepistimioupolis Zografos, 15784 Athens, GREECE

Speaker

Athanasios Papaioannou (National Observatory of Athens)

Description

Ground-level enhancements (GLEs) represent the highest-energy end of solar energetic particle (SEP) events, forming a distinct class where ions are accelerated to relativistic speeds. This leads to a sudden, significant increase in cosmic rays detected by ground-based instruments, primarily neutron monitors (NMs). This work focuses on GLE74, which occurred on May 11, 2024. Proton observations up to ~ 2.4 GV, gathered from neutron monitors, SOHO, GOES, and STEREO-A, are combined with soft X-ray flare data, CME detections, and radio bursts to determine the solar origin of the event. A time-shift analysis was also performed to correlate detected particles with their solar sources. Finally, GLE74 is compared to past events to provide further insight into its characteristics.

Session 2 - Intense Events of 2024

Primary author

Athanasios Papaioannou (National Observatory of Athens)

Co-authors

Presentation materials

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