Antiprotons in CR: What Do They Tell Us?

Details Antiprotons in CR: What Do They Tell Us? Antiprotons in CR: What Do They Tell Us?

2003-06-18

arxiv.org/abs/astro-ph/0306368v1

Proc. 28th ICRC Tsukuba, 2003, pp.1921-1924

Astronomy and Astrophysics

Astrophysics

4 pages, tsukuba.sty, to appear in the Proc. 28th International Cosmic Ray Conference (Tsukuba, Japan 2003)

Scientific paper

Recent measurements of the CR antiproton flux have been shown to pose a problem for conventional propagation models. In particular, models consistent with secondary/primary nuclei ratio in CR produce too few antiprotons, while matching the ratio and the antiproton flux requires ad hoc assumptions. This may indicate an additional local CR component or new phenomena in CR propagation in the Galaxy. We discuss several possibilities which may cause this problem.

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