The earliest evidence of spatial distributions of solar energetic particles (SEPs) compared
events from many different source longitudes on the Sun, but the early Pioneers provided …

Sixty years ago the first observation was published showing solar energetic particles (SEPs)
with a sampling of chemical elements with atomic numbers 6≤ Z≤ 18 above 40 MeV amu …

An important aspect of solar energetic particle (SEP) events is their source populations.
Elemental abundance enhancements of impulsive SEP events, originating in presumed …

One of the earliest indicators of the importance of shock acceleration of solar energetic
particles (SEPs) was the broad spatial extent of the “gradual” SEP events produced as the …

The early 1970s saw a new and surprising feature in the composition of solar energetic
particles (SEPs), resonant enhancements up to 10,000-fold in the ratio 3He/4He that could …

Impulsive solar energetic-particle (SEP) events were first distinguished as the streaming
electrons that produce type III radio bursts as distinct from shock-induced type II bursts. They …

We analyze the spectral properties of 3 He and 4 He as well as the heavy ions (oxygen,
neon, magnesium, silicon, and iron) in 80 3 He-rich solar energetic particle (SEP) events …

We outline and discuss a model for the enhanced abundances of trans-Fe elements in
impulsive solar energetic particle (SEP) events, where large mass-dependent abundance …

Solar energetic particles (SEPs) in the small “impulsive” events, primarily accelerated during
magnetic reconnection in solar jets, have strong enhancements of the abundances of …

The acceleration and transport of solar energetic particles (SEPs) cause their abundance,
measured at a constant velocity, to be enhanced or suppressed as a function of the …