Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...147..127l&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 147, no. 1, June 1985, p. 127-134.
Astronomy and Astrophysics
Astrophysics
12
Antiprotons, Cosmic Rays, Radiation Sources, Gamma Rays, Neutrinos, Particle Flux Density, Particle Production, Positron Annihilation
Scientific paper
The authors examine the possibility of explaining the cosmic-ray antiproton flux observed by adding thick cosmic-ray sources to the thin sources of the standard leaky-box model. They show that in this model, if all cosmic rays issue from these sources, the mean thick-source grammage needed to account for the observed antiproton flux is only ≡7.5 g cm-2. However, thick sources will overproduce secondary cosmic-ray nuclei such as lithium, beryllium, boron if their grammage is less than ≡30 g cm-2. With this grammage, the fraction of cosmic rays coming from thick sources is ≡25%. The amounts of other thick-source products predicted by the model are also evaluated: deuterons, helium 3, interstellar lithium, beryllium and boron, positrons, gamma-rays and neutrinos.
Cesarsky Catherine J.
Lagage Pierre Olivier
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