Speaker
Description
Relevant to Space Weather is to study the relations between the solar activity and the related solar energetic particle (SEP) events observed in the heliosphere. In this study, we analyze the relations between the solar activity (flare, CME, shocks) and the SEP peak intensities measured by MESSENGER, STEREO, and ACE spacecraft during 2010-2015. We investigate the 3D early kinematic profile of the CME and associated wave from 1 to 15 solar radii and determine their main morphological (size) and dynamic (propagation and expansion speeds, acceleration) properties. We investigate their relationship with the main characteristics of the SEP events (for protons and electrons), such as peak flux and timing measured in situ. Our study aims to investigate the flare versus CME origin of particles at the highest energy range, by characterizing the birth of CMEs and shocks in the low corona (distances < 2 Rs) and the origin of the medium-to-high energy particles, by investigating the evolution of CME/shocks up to 15 Rs. A summary of the results, implications for the Space Weather research, and comparison with previous works is presented
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