A Combined Interpretation of CR Nuclei and Antiproton High Energy Measurements

Details A Combined Interpretation of CR Nuclei and Antiproton High Energy Measurements A Combined Interpretation of CR Nuclei and Antiproton High Energy Measurements

2009-07-19

arxiv.org/abs/0907.3289v2

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

5 pages. To appear in the proceedings of 31th International Cosmic Ray Conference (ICRC 2009), Lodz, Poland, 7-15 Jul 2009. v2

Scientific paper

In the last months several ballon and satellite experiments improved significantly our knowledge of cosmic rays (CR) spectra at high energy. In particular CREAM allowed to measure B/C, C/O and N/O up to 1 TeV and PAMELA the anti-p/p ratio up to 100 GeV with unprecedented accuracy. These measurements offer a valuable probe of CR propagation properties. We performed a statistical analysis to test the compatibility of these results, as well as other most significant experimental data, with the predictions of a new numerical CR diffusion package (DRAGON). We found that above 1 GeV all data are consistent with a diffusion scenario in a well defined range of values of the diffusion coefficient energy power index and normalization.

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