Abstract
Anti-matter in the cosmic radiation incident on the Earth can be of two types: antiparticles from distant antigalaxies and secondary particles generated by collisions of cosmic rays with nuclei of the interstellar medium (ISM) either in our Galaxy or in other galaxies. Insofar as the 2.7 K relict radiation inhibits the former for positrons (with energy above some tens of MeV) and the expected ratio of extragalactic particles to galactic particles is very small for protons (and thus antiprotons) it is conventional to assume that collisions in the ISM are the source of the e+ and p̄ detected. We consider here the manner in which cosmic rays are propagated in the Galaxy by studying the fluxes of these antiparticles.
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Szabelski, J., Wdowczyk, J. & Wolfendale, A. Anti-matter in the primary cosmic radiation. Nature 285, 386–388 (1980). https://doi.org/10.1038/285386a0
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DOI: https://doi.org/10.1038/285386a0
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