Dresing, N., R. Gómez-Herrero, B. Heber, A. Klassen, O. Malandraki, W. Dröge, and Y. Kartavykh, Statistical survey of widely spread out solar electron events observed with STEREO and ACE with special attention to anisotropies, A&A, 567, A27 (2014) (ADS)
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Date: 2021 September 23
This cartoon attempts to characterize the basic problem of associating SEPs ("solar cosmic rays") with their sources near the Sun. Of course we have no remote-sensing observations of high-energy particles, and so the geometry remains obscure. Complicating this uncertainty is the likelihood of meandering deviations from the Parker spiral, plus of course diffusion. The SEPs are also likely to have distributed origins in CME-driven shocks.