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arXiv 1111.6256astro-ph.HE
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半相对论性超新星超高能宇宙射线的光谱和成分

Spectrum and Composition of Ultra-high Energy Cosmic Rays from Semi-relativistic Hypernovae

Ruo-Yu Liu, Xiang-Yu Wang

摘要:

有人认为,在半相对论性喷出物中具有大量能量的超新星遗迹可以将中等质量或重核加速到超高能量,并在宇宙射线中提供足够的能量来解释观测到的通量。本文计算了这种半相对论性超新星的超高能宇宙射线的能谱和化学成分。由于其化学成分与超新星喷出物的化学成分相同,并且源处的宇宙射线光谱平坦或坚硬,因此在地球上观测到的传播宇宙射线的光谱和成分可以与皮埃尔·俄歇天文台的测量结果相一致。

英文摘要:

It has been suggested that hypernova remnants, with a substantial amount of energy in semi-relativistic ejecta, can accelerate intermediate mass or heavy nuclei to ultra-high energies and provide sufficient amount of energy in cosmic rays to account for the observed flux. We here calculate the expected energy spectrum and chemical composition of ultra-high energy cosmic rays from such semi-relativistic hypernovae. With a chemical composition equal to that of the hypernova ejecta and a flat or hard spectrum for cosmic rays at the sources, the spectrum and composition of the propagated cosmic rays observed at the Earth can be compatible with the measurements by the Pierre Auger Observatory.

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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