Table 1

Criteria used to define the solar flare and coronal shock SEP sources.

Solar flare source Coronal shock source
Spatial location AR open field at 2.5 R Maximum CME width at ∼10–15 R
Injection time X-ray flare peak Type II onset
Energy spectrum Steep/soft power law Rollover spectrum
Maximum intensity Scaled with flare class Scaled with CME speed
Temporal profile Exponential decay from flare time Exponential decay from Type Il time
Decay constant Scaled by flare magnitude Based on CME transit time to 21.5 R

Notes. See the text in Section 3.2 for further details.

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