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- W4220788409 abstract "We take a phenomenological approach in a minimal model to understand the spectral intensity of secondary cosmic-ray particles like positrons, antiprotons, Lithium, Beryllium and Boron. Our analysis shows that cosmic rays at ∼ GeV energies pass through a significant amount of matter in regions surrounding the sources. This grammage decreases with increasing cosmic-ray energy and becomes negligible beyond ∼ 100 GeV. During the subsequent propagation in the interstellar medium cosmic rays of all energies up to ∼ 10 5 GeV/ n pass through about 1–2 g cm −2 of matter before leaking into the intergalactic medium. It is in the interstellar medium that the bulk of the positrons and antiprotons are generated. Also cosmic-ray nuclei like C, N, and O at all energies generate additional amounts of Li, Be and B nuclei with a spectrum similar to those of C, O etc. The implications of these findings of the minimal model to the observations of gamma rays and also the importance of spatial and temporal discreteness of cosmic-ray sources for modeling cosmic-ray propagation are briefly pointed out." @default.
- W4220788409 created "2022-04-03" @default.
- W4220788409 creator A5001770479 @default.
- W4220788409 creator A5089178992 @default.
- W4220788409 date "2022-11-01" @default.
- W4220788409 modified "2023-09-25" @default.
- W4220788409 title "A minimal model for understanding secondary cosmic rays" @default.
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- W4220788409 doi "https://doi.org/10.1016/j.asr.2022.03.010" @default.
- W4220788409 hasPublicationYear "2022" @default.
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