Abstract
It has been suggested that the Galactic cosmic rays may be accelerated by a two stage process in which one process, such as stellar flares, inject non-relativistic, super-thermal particles which are subsequently boosted to cosmic ray energies by some other mechanism, perhaps related to supernovae (eg. Cassé and Goret, 1978). Two-stage models in which the injection and re-acceleration processes are uncorrelated are apparently untenable because they cannot fit the observed energy dependence of the LiBeBN/CNO ratio (Fransson and Epstein, 1980). Here it is shown that additional contraints derived by considering the energy losses and nuclear reactions suffered by the super-thermal particles prior to their re-acceleration severely restrict other types of two-stage models.
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References
Cassé, M. and Goret, P.: 1978, Ap.J., 221, 703.
Fransson, C. and Epstein, R.: 1980, Ap.j. (in press).
Montmerle, T.: 1979, Ap.J. 231, 95.
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© 1981 IAU
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Epstein, R.I. (1981). Are Stellar Flares and the Galactic Cosmic Rays Related?. In: Setti, G., Spada, G., Wolfendale, A.W. (eds) Origin of Cosmic Rays. International Astronomical Union / Union Astronomique Internationale, vol 94. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-8475-2_19
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DOI: https://doi.org/10.1007/978-94-009-8475-2_19
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-277-1272-1
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