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arXiv 1005.1003astro-ph.HEhep-ph
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脉冲星和磁星的宇宙射线

Cosmic Rays from Pulsars and Magnetars

Jeremy S. Heyl, Ramandeep Gill, Lars Hernquist

摘要:

我们比较了来自磁星和磁星的宇宙射线电子和正电子的预期丰度。我们假设,在银河系中的婴儿恒星和磁星的分布遵循高质量恒星的分布,并且宇宙射线的产生率分别与恒星和磁星的自旋下降和磁衰变功率成正比。结合其他来源(特别是超新星遗迹)的初级和次级宇宙射线轻子,我们发现磁星和磁星都可以很容易地解释观测到的宇宙射线谱,特别是HESS在几TeV处看到的下降和PAMELA发现的正电子分数的增加。

英文摘要:

We compare the expected abundance of cosmic-ray electrons and positrons from pulsars and magnetars. We assume that the distribution of infant pulsars and magnetars follows that of high-mass stars in the Milky Way and that the production rate of cosmic rays is proportional to the spin-down and magnetic-decay power of pulsars and magnetars, respectively. In combination with primary and secondary cosmic-ray leptons from other sources (especially supernova remnants), we find that both magnetars and pulsars can easily account for the observed cosmic-ray spectrum, in particular the dip seen by HESS at several TeV and the increase in positron fraction found by PAMELA.

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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