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arXiv 0706.2158astro-ph
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膨胀宇宙中的超高能宇宙射线扩散

Ultra High Energy Cosmic Rays Diffusion in an Expanding Universe

R. Aloisio, V. Berezinsky, A. Gazizov

摘要:

本文研究了膨胀宇宙中超高能宇宙射线扩散方程的解,并将其与著名的Syrovatsky解在更严格的静态宇宙中的解进行了比较。在所有参数固定不变的情况下,两种解的形式比较显示出明显的差异。如果在两个模型中使用不同的最佳拟合参数集,则这种差异不那么重要。

英文摘要:

We study the solution of the diffusion equation for Ultra-High Energy Cosmic Rays in the general case of an expanding universe, comparing it with the well known Syrovatsky solution obtained in the more restrictive case of a static universe. The formal comparison of the two solutions with all parameters being fixed identically reveals an appreciable discrepancy. This discrepancy is less important if in both models a different set of best-fit parameters is used.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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