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摘要
En 中文
The arrival direction distribution of the highest-energy cosmic rays with respect to Galactic latitude has been analysed using both the Yakutsk and the available world data from extensive air shower arrays. A north-south asymmetry is indicated in the distribution observed with the Yakutsk array at 10(19) eV in the outer Galaxy direction. A comparison with trajectory calculations for charged particles in the Galactic magnetic field indicates that the observed effect can be explained by a contribution from heavy nuclei originating in the Galactic disk to an extragalactic isotropic primary flux. The mean-mass number of Galactic nuclei estimated using the model is (log(10)(A)) = 1.37 +/- 0.2.
Keyword:
HIGHEST ENERGIES
TRAJECTORIES
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期刊
J
IF:
3.5
论文数:
6.8K
被引数:
7.7K
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