Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...456..519s&link_type=abstract
Astrophysical Journal v.456, p.519
Astronomy and Astrophysics
Astronomy
27
Acceleration Of Particles, Ism: Cosmic Rays, Elementary Particles
Scientific paper
The propagation of cosmic rays in the Galaxy is understood as a diffusive process in which the magnetic field irregularities serve as scatter centers. Particles that interact with turbulent magnetic field irregularities can gain energy because of stochastic, second-order, Fermi type of acceleration. We could show that such a propagation scenario, in which the particles are primary preenergized at the outsets and then reaccelerated during propagation, is completely compatible with the observation of cosmic-ray nuclear data, such as cosmic-ray spectra and the secondary/primary ratio of boron/carbon and subiron/iron. In this context, we present here results of the expected interstellar secondary antiproton flux via p + p → bar-p + x interactions in the framework of this diffusive reacceleration model. We can show that the interstellar bar-p spectrum under these conditions looks very different from that calculated in the Standard Leaky Box situation.
Heinbach U.
Simon Manfred
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