arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1703.02802astro-ph.HE
收藏

银河系源处cosmic ray注入指数的平均值

Average value of the cosmic ray injection exponent at Galactic sources

Anatoly Lagutin, Nikolay Volkov

摘要:

源发射的高能宇宙射线的能谱在银河系中传播过程中会发生变化。利用在地球上观测到的光谱和两种不同的传输模型,基于反常和正常扩散方程,我们已经恢复了宇宙线注入指数的平均值在银河系源考虑到星际介质的不均匀性。我们已经表明,注入指数$p$的平均值,在这两个传输模型的框架,等于$p\sim (2.8-3.0)$。

英文摘要:

The energy spectrum of high energy cosmic rays emitted by sources change during propagation in the Galaxy. Using the spectrum observed at the Earth and two different transport models, based on anomalous and normal diffusion equations, we have retrieved an average value of the cosmic ray injection exponent at Galactic sources taking into account the inhomogeneity of the interstellar medium. We have shown that the average value of the injection index $p$, obtained in the framework of both transport models, equals to $p\sim (2.8-3.0)$.

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。

↑