Antiproton production of propagating cosmic rays under distributed reacceleration

Details Antiproton production of propagating cosmic rays under distributed reacceleration Antiproton production of propagating cosmic rays under distributed reacceleration

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...320..699s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 320, Sept. 15, 1987, p. 699-702. DFG-supported research.

Astronomy and Astrophysics

Astrophysics

3

Antiprotons, Cosmic Rays, Particle Acceleration, Particle Production, Abundance, Monte Carlo Method

Scientific paper

The available measurements on the cosmic-ray antiproton/proton ratio show an excess of antiprotons above predictions derived in the framework of the standard picture of cosmic-ray origin and propagation. Calculations are performed of the production from collisions of cosmic rays with the interstellar gas under the condition of distributed reacceleration. It could be shown that the calculated antiproton/proton ratio is enhanced compared to that derived from the 'leaky box' model, but it remains difficult to bring it into agreement with the data by reasonable astrophysical assumptions.

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