Kavli Affiliate: Vahe Petrosian
| First 5 Authors: Meng Jin, Gang Li, Nariaki Nitta, Wei Liu, Vahe Petrosian
| Summary:
Shocks driven by coronal mass ejections (CMEs) are primary drivers of gradual
solar energetic particle (SEP) events, posing significant risks to space
technology and astronauts. Concurrently, particles accelerated at these shocks
may also propagate back to the Sun, potentially generating gamma-ray emissions
through pion decay. We incorporated advanced modeling and multi-messenger
observations to explore the role of CME-driven shocks in gamma-ray emissions
and SEPs. Motivated by Fermi-LAT long-duration solar flares, we used the AWSoM
MHD model to investigate the connection between the shocks and the properties
of observed gamma-ray emissions. By coupling the AWSoM with iPATH model, we
evaluate the impact of shock evolution complexity near the Sun on SEP intensity
and spectra. Our result points to the importance of accurate background coronal
and solar wind modeling, as well as detailed observations of CME source
regions, in advancing our understanding of CME-driven shocks and the dynamics
of associated energetic particles.
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