Documents SCIDAC Center for Extended MHD Modeling EXTENDED MHD MODELING: BACKGROUND, STATUS AND VISION Dalton....

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Documents What we (don’t) know about UHECRs We know: their energies (up to 10 20 eV). their overall energy.....

Slide 1 Slide 2 Slide 3 What we (don’t) know about UHECRs We know: their energies (up to 10 20 eV). their overall energy spectrum We don’t know: where they are produced…