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astro-ph.HE2025
Solar Cycle Variation of Sustained Gamma-ray Emission Events from the Sun and Related Energetic Events
N. Gopalswamy, P. Mäkela, S. Akiyama +2
The sustained gamma ray emission (SGRE) from the Sun is one of the fascinating high energy phenomena closely related to the acceleration of protons to energies >300 MeV. Here we re…
astro-ph.HE2023
Speed and Acceleration of CMEs Associated with Sustained Gamma-Ray Emission Events Observed by Fermi/LAT
P. Mäkelä, N. Gopalswamy, S. Akiyama +2
The sustained gamma-ray emission (SGRE) from the Sun is a prolonged enhancement of >100 MeV gamma-ray emission that extends beyond the flare impulsive phase.The origin of the >300…