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Title:
On the nature of the cosmic ray positron spectrum
Authors:
Protheroe, R. J.
Affiliation:
AA(NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, MD)
Publication:
Astrophysical Journal, Part 1, vol. 254, Mar. 1, 1982, p. 391-397. (ApJ Homepage)
Publication Date:
03/1982
Category:
Space Radiation
Origin:
STI
NASA/STI Keywords:
Astronomical Models, Astronomical Spectroscopy, Cosmic Rays, Milky Way Galaxy, Positrons, Abundance, Energy Spectra, Propagation Modes, Solar Electrons
DOI:
10.1086/159743
Bibliographic Code:
1982ApJ...254..391P

Abstract

A new calculation has been made of the flux of secondary positrons above 100 MeV expected for various propagation models. The models investigated are the leaky box or homogeneous model, a disk-halo diffusion model, a dynamical halo model, and the closed galaxy model. The parameters of these models have, in each case, been adjusted for agreement with the observed secondary/primary ratios and Be-10 abundance. The positron flux predicted for these models is compared with the available data. The possibility of a primary positron component is considered.

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