F. Sanches, M. Collados, and R. Rebolo,observational and physical cosmology, Cambridge University Press, Cambridge

The Bulge of the Milky Way and cosmic rays

“…For instance a value of 5 10 27 cm 2 s" 1 gives about three times more antiprotons . Because it was shown by Halm et al (1992a) for antiprotons that the LBM and the HDM solutions are similar for r/R 0 « 1 and because of the increasing anti-proton flux with decreasing diffusion constant it may be possible" to produce an ultraheavy cosmic ray abundance in the HDM which is similar to, or greater than, that in the LBM.…”