Abstract :
Solar energetic particles (SEPs) produced during solar eruptions can
occasionally reach extremely high energies and spread throughout the
heliosphere, including at Earth. The main acceleration processes are
associated with solar flares and coronal mass ejection (CME)-driven
shocks, although their relative contributions and roles are still not
fully understood.
During my post-doc, I studied these very high-energy SEP events using
both statistical approaches and detailed analyses of individual extreme
events.
In this seminar, I will present results from a catalogue of >100 MeV
proton events observed by SOHO/ERNE (a near-Earth spacecraft) over the
last 30 years. I will also present a recent case study of a Ground Level
Enhancement (GLE) event observed by Earth, Solar Orbiter, and STEREO-A.
For this event, we combined magnetic connectivity analysis with 3D CME
shock reconstruction, and investigated the timing, spatial
configuration, and shock parameters in order to link them to SEP
spectral characteristics and electromagnetic signatures.
Author :
Manon Jarry , post-doctorante au National Observatory of Athens en Grèce depuis 2024 au sein du projet européen SPEARHEAD
