Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pazh....9..102a&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 9, Feb. 1983, p. 102-107) Soviet Astronomy Letters (ISSN 0360-0327), vol. 9, Jan.-Feb.
Astronomy and Astrophysics
Astronomy
Antiprotons, Astronomical Models, Cosmic Plasma, Cosmic Rays, Coulomb Collisions, Electron Plasma, Electron-Positron Pairs, Electron-Positron Plasmas, Energy Dissipation, Energy Levels, Particle Flux Density, Positrons
Scientific paper
A model for generating the observed cosmic ray antiproton spectrum in plasma consisting mainly of electron-positron pairs is discussed. In this model, the antiproton spectrum is generated in plasma where electron-positron pairs have a higher number density than protons and nuclei. To recover the observed abundance of high-energy antiprotons, the plasma is regarded as having an equivalent thickness of 20 g/sq cm with respect to strong interactions. The calculations demonstrate that in the energy range above about 2 GeV, the theoretical spectrum closely fits the observed proton spectrum corrected for demodulation. The dependence of the ratio of theoretical antiproton spectra to the proton spectrum observed near the earth on the energy for two demodulated proton spectra and for cases where the antiproton sources contain hot and cool electron-positron plasma is shown.
Agaronyan F. A.
Kelner Stanislav R.
Kotov Yu. D.
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