Abstract
A simple model of cosmic ray propagation is proposed from which the major experimental results can be derived: The model reproduces the observed nuclear abundances and accounts for the observed changes of nuclear composition with energy, the high degree of isotropy of cosmic ray flux at all energies, and the high degree of its constancy throughout the history of the Solar System. It is consistent with the observed size distribution of extensive airshowers, the intensity and energy distribution of the electron component, and the diffuse emission of γ-rays and radio waves.
The model is characterized by the two basic assumptions: (1) that cosmic rays have been injected at an unchanging rate by sources located in the galactic spiral arms and (2) that a large-scale magnetic field retains all particles in our galaxy, where they interact with interstellar gas, so that all complex nuclei are finally fragmented and their energy dissipated in meson production and electro-magnetic interactions.
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References
Bradt, H. L. and Peters, B.: 1950,Phys. Rev. 80, 943.
Byrnak, B.: 1976, to be published.
Cowsik, R. and Wilson, L. W.: 1973,13th International Cosmic Ray Conference Denver 1, 500.
Fichtel, C., Hartmann, R. C., Kniffen, D. A., Thompson, D. J., Bignami, G. F., Ögelman, H., Özel, M. E., and Türmer, T.: 1975,Astrophys. J. 198, 163.
Ginzburg, V. L. and Syrovatskii, S. I.: 1964,The Origin of Cosmic Rays, Pergamon Press.
Hayakawa, S.: 1969,Cosmic Ray Physics, John Wiley and Sons, p. 569.
Juliusson, E.: 1974,Astrophys. J. 191, 331.
Lindstrom, P. J., Greiner, D. E., Heckmann, H. H., Cork, B., and Bieser, F. S.: 1975LBL Report 3650.
Meyer, J. P., Casse, M., and Westergaard, N. J.: 1975,14th International Cosmic Ray Conference Munich 12, 4144.
Osborne, J. L., Wdowczyk, J., and Wolfendale, A. W.: 1976, Preprint, and references therein.
Perron, C.: 1975, Thesis, University of Paris-Sud Orsay.
Raisbeck, G. M. and Yiou, F.: 1971,Phys. Rev. Lett. 27, 875.
Raisbeck, G. M. and Yiou, F.: 1974,Phys. Rev. C9, 1385.
Raisbeck, G. M., Boerstling, P., Klapisch, R., and Thomas, T. D.: 1975,Phys. Rev. C12, 527.
Raisbeck, G. M., Lestringue, J., and Yiou, F.: 1975,Phys. Lett. 57B, 186.
Ramaty, R. and Westergaard, N. J.: 1976,Astrophys. Space Sci.,45, 143.
Rasmussen, I. Lundgaard and Peters, B.: 1975,Nature 258, 412.
Shapiro, M. M., Silberberg, R., and Tsao, C. H.: 1973,13th International Cosmic Ray Conference Denver 1, 578.
Silberberg, R. and Tsao, C. H.: 1973,Astrophys. J. Suppl. 25, 315.
Smith, L. H., Buffington, A., Smoot, G. F., Alvarez, L. W., and Wahlig, M. A.: 1973,Astrophys. J. 180, 987.
Thambyahpillai, T.: 1975, in J. L. Osborne and A. W. Wolfendale (eds.),Origin of Cosmic Rays, D. Reidel, Dordrecht, Holland.
Turver, K. E.: 1973, in A. W. Wolfendale (ed.),Cosmic Rays at Ground Level, Institute of Physics, London and Bristol.
Webber, W. R., Damle, S. V., and Kish, J.: 1972,Astrophys. Space Sci. 15, 245.
Yiou, F., Fontes, P., Perron, C., and Raisbeck, G. M.: 1973,13th International Cosmic Ray Conference Denver 1, 512.
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Peters, B., Westergaard, N.J. Cosmic ray propagation in a closed galaxy. Astrophys Space Sci 48, 21–46 (1977). https://doi.org/10.1007/BF00643036
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DOI: https://doi.org/10.1007/BF00643036