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arXiv 1208.1682astro-ph.HE
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超高能宇宙射线加速和输运的理论挑战

Theoretical Challenges in Acceleration and Transport of Ultra High Energy Cosmic Rays: A Review

Pasquale Blasi

摘要:

在过去的几年里,皮埃尔·俄歇天文台和最近的望远镜阵列收集了大量的数据,使超高能宇宙射线的起源问题成为一个真正的实验/观测问题。这些实验在光谱、化学成分和各向异性方面提供的明显矛盾的结果还不能得出任何最终结论。在这里,我将讨论这些数据所带来的一些理论挑战:特别是我将讨论一些有关的问题,从银河系到河外宇宙射线的过渡,以及不同的模型如何面对我们的理解银河系宇宙射线的超新星遗迹范例。我也将讨论旨在描述加速宇宙射线到最高能量的理论在相对论冲击和单极电感器的地位。

英文摘要:

The wealth of data collected in the last few years thanks to the Pierre Auger Observatory and recently to the Telescope Array made the problem of the origin of ultra high energy cosmic rays a genuinely experimental/observational one. The apparently contradictory results provided by these experiments in terms of spectrum, chemical composition and anisotropies do not allow to reach any final conclusions as yet. Here I will discuss some of the theoretical challenges imposed by these data: in particular I will discuss some issues related to the transition from Galactic to extragalactic cosmic rays and how the different models confront our understanding of Galactic cosmic rays in terms of supernova remnants paradigm. I will also discuss the status of theories aiming at describing acceleration of cosmic rays to the highest energies in relativistic shocks and unipolar inductors.

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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