Natural SciencesAstronomyPhysicsAstrophysicsNuclear PhysicsSolar AstronomyGamma-ray SourcesGamma-ray SpectroscopySolar Energetic ParticlesSolar FlaresSolar Gamma-ray EmissionSolar RadiationGamma-ray Imaging Of Solar FlaresGamma-ray Spectroscopy Of Solar FlaresParticle Acceleration In Solar FlaresSolar Flare Gamma-ray EmissionSolar Gamma-ray Spectrum