NMDB Meeting 2025: Cosmic Ray studies with Neutron Detectors

Statistical Analysis of GLE events

Not scheduled

20m

Seminar Room (Physics Department )

Poster

Speaker

Eleni Natalia Proimou (National and Kapodistrian University of Athens)

Description

This study presents a statistical analysis of various properties of all recorded until now Ground Level Enhancement (GLE) events, focusing on their association with solar sources. Specifically, we examine the time difference between the onset of the solar flare and the onset of GLE events as well as the correlation between GLE occurrence and amplitude with the main solar flare characteristics, such as longitude and intensity. Our preliminary results indicate an average time delay of 37 minutes between solar flares and GLE onset, with the mean solar flare class estimated at X4.93. The longitudinal distribution suggests a dominant solar flare location at 43.6° West. Additionally, we calculate the time correlation between GLE onset and the onset of >100 MeV proton flux. The results of this study could significantly contribute to several key domains within space weather research.