Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pazh....7..585g&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 7, Oct. 1981, p. 585-589.) Soviet Astronomy Letters, vol. 7, Sept.-Oct. 1981, p. 325-32
Astronomy and Astrophysics
Astronomy
1
Antiprotons, Particle Acceleration, Particle Flux Density, Primary Cosmic Rays, Supernova Remnants, Milky Way Galaxy, Proton Flux Density, Pulsars, Secondary Cosmic Rays, Stellar Envelopes
Scientific paper
Possible reasons for the presence of the relatively large antiproton flux detected in primary cosmic rays near the earth are discussed, and an extended analysis is made of the model that explains the antiproton flux as originating in supernova envelopes surrounding young pulsars. Expressions are stated for the power of the cosmic-ray source within the supernova envelope, the thickness of material tranversed by particles accelerated within the cavity, the power of emergent particles and secondary antiprotons, the proton and antiproton density in interstellar space, and finally the relative cosmic ray antiproton abundance. The observational data can be explained if the abundance in the interstellar medium could be enhanced by about an order of magnitude. Pulsars are assumed to develop in the Galaxy at a rate of 0.1/yr. It is also explained why no appreciable quantity of secondary nuclei are generated in young supernova envelopes.
Ginzburg Viktor L.
Ptuskin Vladimir S.
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