Dr
Georgia de Nolfo
(NASA/GSFC)
27/09/2013, 15:05
Georgia De Nolfo (maybe)
The answer to the question of the origin of galactic cosmic rays lies not only with directional anisotropies for the highest energies where direction is preserved but also with in the signatures found in their energy spectra and composition. Elemental and isotopic measurements carry the imprint of nucleosynthesis, acceleration time scales, and residence times within the Galaxy. Recent...